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    <title language="eng">Silver dissolution and precipitation in an Na2O–ZnO–B2O3 metallization paste glass</title>
    <abstract language="eng">Thermally stimulated interactions between silver and glass, that is, silver dissolution as Ag+ and precipitation as Ag0 were studied in two glass series of molar target composition xAg2O–(19 − x)Na2O–28ZnO–53B2O3 with x = 0, 0.1, 0.5, 5 and (19Na2O–28ZnO–53B2O3)+yAg2O with y = 0.01, 0.05. These act as model for low-melting borate glasses being part of metallization pastes. The occurrence of metallic silver precipitates in melt-quenched glass ingots demonstrated that silver dissolved only in traces (&lt; 0.01 mol%) in the glasses. The dissolved silver was detected by means of Raman spectroscopy and energy-dispersive X-ray spectroscopy. Increasing x in the batch could not lead to a significant increase of the silver ion fraction in the glass as possible in binary silver borate glasses. In situ observation of heated AgNO3 mixed with the base glass frit in a hot stage microscope showed that Ag0 precipitation occurs already at the solid state. At higher temperatures, small droplets of liquid silver were found to move freely within the melt, whereas coalescence caused a stepwise increase of their size.&#13;
These results contribute to the understanding of formation of silver precipitates in metallization pastes described in the literature.</abstract>
    <parentTitle language="eng">International Journal of Applied Glass Science</parentTitle>
    <identifier type="issn">2041-1286</identifier>
    <identifier type="doi">10.1111/ijag.16613</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-559433</identifier>
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    <enrichment key="date_peer_review">24.10.2022</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Lina Heuser</author>
    <author>Marianne Nofz</author>
    <author>Ralf Müller</author>
    <author>J. Deubener</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Silver metallization paste</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Batch reactions</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Borate</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Glass forming melts</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Glass manufacturing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Raman spectroscopy</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">5 Werkstofftechnik</collection>
    <collection role="institutes" number="">5.6 Glas</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/55943/2022 Heuser Silver.pdf</file>
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  <doc>
    <id>62584</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
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    <language>eng</language>
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    <pageLast>12</pageLast>
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    <title language="eng">Ontology‐Based Digital Infrastructure for Data‐Driven Glass Development</title>
    <abstract language="eng">The development of new glasses is often hampered by inefficient trial‐and‐error approaches. The traditional glass manufacturing process is not only time‐consuming, but also difficult to reproduce with inevitable variations in process parameters. These challenges are addressed by implementing an ontology‐based digital infrastructure coupled with a robotic melting system. This system facilitates high‐throughput glass synthesis and ensures the collection of consistent process data. In addition, the digital infrastructure includes machine learning models for predicting glass properties and a tool for extracting patent information. Current glass databases have significant gaps in the relationships between compositions, process parameters, and properties due to inconsistent studies and nonconforming units. In addition, process parameters are often omitted, and even original literature references provide limited information. By continuously expanding the database with consistent, high‐quality data, it is aimed to fill these gaps and accelerate the glass development process.</abstract>
    <parentTitle language="eng">Advanced Engineering Materials</parentTitle>
    <identifier type="doi">10.1002/adem.202401560</identifier>
    <identifier type="issn">1527-2648</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-625844</identifier>
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    <author>Ya‐Fan Chen</author>
    <author>Felix Arendt</author>
    <author>Hansjörg Bornhöft</author>
    <author>Andréa S. S. de Camargo</author>
    <author>Joachim Deubener</author>
    <author>Andreas Diegeler</author>
    <author>Shravya Gogula</author>
    <author>Altair T. Contreras Jaimes</author>
    <author>Sebastian Kempf</author>
    <author>Martin Kilo</author>
    <author>René Limbach</author>
    <author>Ralf Müller</author>
    <author>Rick Niebergall</author>
    <author>Zhiwen Pan</author>
    <author>Frank Puppe</author>
    <author>Stefan Reinsch</author>
    <author>Gerhard Schottner</author>
    <author>Simon Stier</author>
    <author>Tina Waurischk</author>
    <author>Lothar Wondraczek</author>
    <author>Marek Sierka</author>
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      <value>Digitalisation</value>
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    <subject>
      <language>eng</language>
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      <value>Data-driven glass development</value>
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      <language>eng</language>
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      <value>Ontology</value>
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    <title language="eng">Fast crack healing in glass-matrix composites with rigid filler percolation frameworks</title>
    <abstract language="eng">To ensure the durability of solid oxide fuel cell sealants, the understanding of the microstructural influence on viscous crack healing is essential. To this end, the effect of microstructure with respect to the spatial distribution of filler particles on viscous crack healing was studied with confocal laser scanning microscopy in glass-matrix composites (GMCs) made by mix-milling and sintering of sodalime magnesium silicate glass and Φ ≈ 6 vol% ZrO2 chemically inert rigid filler particles. This way, no change in Φ occurred during the crack healing treatments studied on Vickers indentation-induced radial cracks in polished GMC surfaces.&#13;
Different microstructures were mimicked using different ZrO2 particle sizes for mix-milling. Unlike coarse ZrO2 particles, similar in size to the glass particle, fine ZrO2 particles, much smaller than the glass particles, form a rigid percolation framework (RPF) of ZrO2 filler particles around the former glass particles or glass particle agglomerates. For this RPF microstructure, crack healing was observed more readily as crack healing retardation phenomena like large-scale crack widening and crack tip rounding were strongly reduced, whereas narrow cracks could still heal locally within the glassy regions.</abstract>
    <parentTitle language="eng">Journal of the American Ceramic Society</parentTitle>
    <identifier type="issn">0002-7820</identifier>
    <identifier type="doi">10.1111/jace.20386</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-625921</identifier>
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    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Carsten Blaeß</author>
    <author>Ralf Müller</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Crack healing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Glass matrix composite</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Rigid percolation frameworks</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Vickers indentation</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
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    <file>https://opus4.kobv.de/opus4-bam/files/62592/2025 Blaess Fast crack healing in glass matrix composites with rigid filler.pdf</file>
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  <doc>
    <id>50949</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>85</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>7</volume>
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    <title language="eng">Water in Alkali Aluminosilicate Glasses</title>
    <abstract language="eng">To understand the influence of water and alkalis on aluminosilicate glasses, three polymerized glasses with varying ratios of Na/K were synthesized [(22. 5-x)Na2O-xK2O-22.5 Al2O3-55 SiO2 with x = 0, 7.5, and 11.25]. Subsequently, these glasses were hydrated (up to 8 wt% H2O) in an internally heated gas pressure vessel. The density of hydrous glasses linearly decreased with water content above 1 wt%, consistent with the partial molar volume of H2O of 12 cm3/mol. Near-infrared spectroscopy revealed that hydroxyl groups are the dominant species at water content of &lt;4 wt%, and molecular water becomes dominating at water content of &gt;5 wt%. The fraction of OH is particularly high in the pure Na-bearing glass compared to the mixed alkali glasses. 27Al magic angle spinning-NMR spectroscopy shows that aluminum is exclusively fourfold coordinated with some variations in the local geometry. It appears that the local structure around Al becomes more ordered with increasing K/Na ratio. The incorporation of H2O reinforces this effect. The differential thermal analysis of hydrous glasses shows a significant mass loss in the range of glass transition already during the first upscan, implying the high mobility of water in the glasses. This observation can be explained by the open structure of the aluminosilicate network and by the low dissociation enthalpy of H2O in the glasses (≈ 8 kJ/mol). The effect of the dissolved H2O on the glass transition temperature is less pronounced than for other aluminosilicate glasses, probably because of the large fraction of Al in the glasses.</abstract>
    <parentTitle language="eng">frontiers in Materials</parentTitle>
    <identifier type="doi">10.3389/fmats.2020.00085</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-509497</identifier>
    <enrichment key="date_peer_review">29.06.2020</enrichment>
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    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>R. Balzer</author>
    <author>H. Behrens</author>
    <author>Tina Waurischk</author>
    <author>Stefan Reinsch</author>
    <author>Ralf Müller</author>
    <author>P. Kiefer</author>
    <author>J. Deubener</author>
    <author>M. Fechtelkord</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>NMR spectroscopy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Alkali aluminosilicate glasses</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Water speciation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Glass transition</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Infrared spectroscopy</value>
    </subject>
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    <file>https://opus4.kobv.de/opus4-bam/files/50949/2020 Balzer_Water in alumino silicate glasses.pdf</file>
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    <publishedYear>2024</publishedYear>
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    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>9</pageLast>
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    <title language="eng">Effect of Reaction Layers on Internal Stresses in Co‐Fired Multilayers of Calcium Manganate and Calcium Cobaltite</title>
    <abstract language="eng">A widespread recovery of waste heat requires a cost‐effective production of thermoelectric generators. Thermoelectric oxides are predestined for use at high temperatures. For manufacturing reasons, a multilayer generator design will be easily scalable and cost‐effective. To evaluate the potential of ceramic multilayer technology for that purpose, a multilayer of the promising thermoelectric oxides calcium cobaltite (Ca3Co4O9), calcium manganate (CMO, CaMnO3), and glass–ceramic insulation layers is fabricated. Cracks and reaction layers at the interfaces are observed in the microstructure. The compositions of these reaction layers are identified by energy‐dispersive X‐ray spectroscopy and X‐ray diffraction. Mechanical and thermal properties of all layers are compiled from literature or determined by purposeful sample preparation and testing. Based on this data set, the internal stresses in the multilayer after co‐firing are calculated numerically. It is shown that tensile stresses in the range of 50 MPa occur in the CMO layers. The reaction layers have only a minor influence on the level of these residual stresses. Herein, it is proven that the material system is basically suitable for multilayer generator production, but that the co‐firing process and the layer structure must be adapted to improve densification and reduce the tensile stresses in the CMO.</abstract>
    <parentTitle language="eng">physica status solidi (a)</parentTitle>
    <identifier type="doi">10.1002/pssa.202300956</identifier>
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Herein, it is proven that the material system is basically suitable for multilayer generator production, but that the co\u2010firing process and the layer structure must be adapted to improve densification and reduce the tensile stresses in the CMO.&lt;\/jats:p&gt;","DOI":"10.1002\/pssa.202300956","type":"journal-article","created":{"date-parts":[[2024,5,16]],"date-time":"2024-05-16T00:39:07Z","timestamp":1715819947000},"update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Effect of Reaction Layers on Internal Stresses in Co\u2010Fired Multilayers of Calcium Manganate and Calcium Cobaltite"],"prefix":"10.1002","author":[{"ORCID":"http:\/\/orcid.org\/0000-0001-7735-7313","authenticated-orcid":false,"given":"Patrick","family":"Stargardt","sequence":"first","affiliation":[{"name":"Department 5 \u2013 Materials Engineering Bundesanstalt f\u00fcr Materialforschung und \u2010pr\u00fcfung (BAM)  Unter den Eichen 87 12205 Berlin Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0003-2490-7208","authenticated-orcid":false,"given":"Sophie","family":"Bresch","sequence":"additional","affiliation":[{"name":"Department 5 \u2013 Materials Engineering Bundesanstalt f\u00fcr Materialforschung und \u2010pr\u00fcfung (BAM)  Unter den Eichen 87 12205 Berlin Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-1270-1555","authenticated-orcid":false,"given":"Rainer","family":"Falkenberg","sequence":"additional","affiliation":[{"name":"Department 5 \u2013 Materials Engineering Bundesanstalt f\u00fcr Materialforschung und \u2010pr\u00fcfung (BAM)  Unter den Eichen 87 12205 Berlin Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-0784-9790","authenticated-orcid":false,"given":"Bj\u00f6rn","family":"Mieller","sequence":"additional","affiliation":[{"name":"Department 5 \u2013 Materials Engineering Bundesanstalt f\u00fcr Materialforschung und \u2010pr\u00fcfung (BAM)  Unter den Eichen 87 12205 Berlin Germany"}]}],"member":"311","published-online":{"date-parts":[[2024,5,15]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.egyr.2019.12.011"},{"key":"e_1_2_9_3_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1111\/jace.12076","volume":"96","author":"Koumoto K.","year":"2013","journal-title":"J. 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Metallkd."},{"key":"e_1_2_9_25_1","volume-title":"Standard Test Method for Dynamic Young's Modulus, Shear Modulus, and Poisson's Ratio By Sonic Resonance","author":"ASTM E1875\u201020a","year":"2020"},{"key":"e_1_2_9_26_1","volume-title":"BAMresearch\/MultilayerInternalStresses: Supplementary Material","author":"Falkenberg R."},{"key":"e_1_2_9_27_1","doi-asserted-by":"crossref","first-page":"49","DOI":"10.1109\/14.68226","volume":"26","author":"Broemme A. D. D.","year":"1991","journal-title":"IEEE Trans. Electr. Insul."},{"key":"e_1_2_9_28_1","volume":"2014","author":"Rao A. S. M.","year":"2014","journal-title":"J. Thermodyn."},{"key":"e_1_2_9_29_1","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1007\/BF00209229","volume":"17","author":"Hill R. J.","year":"1990","journal-title":"Phys. Chem. Miner."},{"key":"e_1_2_9_30_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ceramint.2014.02.112"},{"key":"e_1_2_9_31_1","doi-asserted-by":"publisher","DOI":"10.5061\/dryad.h505v"},{"key":"e_1_2_9_32_1","first-page":"890","volume":"56","author":"Meena P.","year":"2018","journal-title":"Indian J. Pure Appl. Phys."},{"key":"e_1_2_9_33_1","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1023\/A:1027335124793","volume":"60","author":"Demidenko N. I.","year":"2003","journal-title":"Glass Ceram."}],"container-title":["physica status solidi (a)"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/pssa.202300956","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,5,16]],"date-time":"2024-05-16T00:39:17Z","timestamp":1715819957000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/pssa.202300956"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,5,15]]},"references-count":32,"alternative-id":["10.1002\/pssa.202300956"],"URL":"http:\/\/dx.doi.org\/10.1002\/pssa.202300956","archive":["Portico"],"relation":{},"ISSN":["1862-6300","1862-6319"],"issn-type":[{"value":"1862-6300","type":"print"},{"value":"1862-6319","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,5,15]]},"assertion":[{"value":"2023-12-19","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2024-05-15","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}</enrichment>
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    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Patrick Stargardt</author>
    <author>Sophie Bresch</author>
    <author>Rainer Falkenberg</author>
    <author>Björn Mieller</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ceramic multilayers</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Co-ﬁrings</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Internal stresses</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">5 Werkstofftechnik</collection>
    <collection role="institutes" number="">5.4 Multimateriale Fertigungsprozesse</collection>
    <collection role="institutes" number="">5.5 Materialmodellierung</collection>
    <collection role="institutes" number="">5.6 Glas</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Elektrische Energiespeicher und -umwandlung</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Materialdesign</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/60162/Physica Status Solidi  a - 2024 - Stargardt.pdf</file>
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  <doc>
    <id>52555</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>526</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>5</issue>
    <volume>11</volume>
    <type>article</type>
    <publisherName>MDPI</publisherName>
    <publisherPlace>Basel</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Study of Al2O3 Sol-Gel Coatings on X20Cr13 in Artificial North German Basin Geothermal Water at 150 °C</title>
    <abstract language="eng">Al2O3 has been widely used as a coating in industrial applications due to its excellent chemical and thermal resistance. Considering high temperatures and aggressive mediums exist in geothermal systems, Al2O3 can be a potential coating candidate to protect steels in geothermal applications. In this study, γ-Al2O3 was used as a coating on martensitic steels by applying AlOOH sol followed by a heat treatment at 600 °C. To evaluate the coating application process, one-, two-, and three-layer coatings were tested in the artificial North German Basin (NGB), containing 166 g/L Cl−, at 150 °C and 1 MPa for 168 h. To reveal the stability of the Al2O3 coating in NGB solution, three-layer coatings were used in exposure tests for 24, 168, 672, and 1296 h, followed by surface and cross-section characterization. SEM images show that the Al2O3 coating was stable up to 1296 h of exposure, where the outer layer mostly transformed into boehmite AlOOH with needle-like crystals dominating the surface. Closer analysis of cross-sections showed that the interface between each layer was affected in long-term exposure tests, which caused local delamination after 168 h of exposure. In separate experiments, electrochemical impedance spectroscopy (EIS) was performed at 150 °C to evaluate the changes of coatings within the first 24 h. Results showed that the most significant decrease in the impedance is within 6 h, which can be associated with the electrolyte penetration through the coating, followed by the formation of AlOOH. Here, results of both short-term EIS measurements (up to 24 h) and long-term exposure tests (up to 1296 h) are discussed.</abstract>
    <parentTitle language="eng">Coatings</parentTitle>
    <identifier type="issn">2079-6412</identifier>
    <identifier type="doi">10.3390/coatings11050526</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-525551</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">10.06.2021</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Gabriela Aristia</author>
    <author>Quynh Hoa Le</author>
    <author>Marianne Nofz</author>
    <author>Regine Sojref</author>
    <author>Ralph Bäßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Al2O3</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Geothermal</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Martensitic steels</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Behmite</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Corrosion</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">5 Werkstofftechnik</collection>
    <collection role="institutes" number="">5.1 Mikrostruktur Design und Degradation</collection>
    <collection role="institutes" number="">5.6 Glas</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="institutes" number="">7.6 Korrosion und Korrosionsschutz</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/52555/coatings-11-00526.pdf</file>
  </doc>
  <doc>
    <id>54881</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>5</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>14</volume>
    <type>article</type>
    <publisherName>Elsevier B.V.</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Internal nucleation tendency and crystal surface energy obtained from bond energies and crystal lattice data</title>
    <abstract language="eng">We present an easy-to-apply method to predict structural trends in the internal nucleation tendency of oxide glasses. The approach is based on calculated crystal fracture surface energies derived from easily accessible diatomic bond energy and crystal lattice data. The applicability of the method is demonstrated on literature nucleation data for isochemically crystallizing oxide glasses.</abstract>
    <parentTitle language="eng">Journal of Non-Crystalline Solids: X</parentTitle>
    <identifier type="doi">10.1016/j.nocx.2022.100093</identifier>
    <identifier type="issn">2590-1591</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-548814</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">25.11.2025</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Christopher Tielemann</author>
    <author>Stefan Reinsch</author>
    <author>Robert Maaß</author>
    <author>J. Deubener</author>
    <author>Ralf Müller</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Glass</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Nucleation tendency</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fracture surface energy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Crystal lattice</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bond energy</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">5 Werkstofftechnik</collection>
    <collection role="institutes" number="">5.6 Glas</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="institutes" number="">5.0 Abteilungsleitung und andere</collection>
    <collection role="themenfelder" number="">Materialdesign</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/54881/Internal nucleation tendency and crystal surface energy.pdf</file>
  </doc>
  <doc>
    <id>65154</id>
    <completedYear/>
    <publishedYear>2026</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>10</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>29</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace>Amsterdam, Niederlande</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Direct connection between secondary relaxation mode and fracture toughness in alkali-aluminosilicate glasses</title>
    <abstract language="eng">Oxide glasses are intrinsically brittle, lacking sufficient atomic-scale mechanisms that can relax mechanical stresses in the vicinity of a propagating crack. As a result, fracture is typically well-captured by considering local bond rupture at the crack tip. Here we demonstrate that barrier energies related to the low-temperature 𝛾-relaxation mode in alkali-aluminosilicate glasses are inversely related to the fracture toughness measured via standardized three-point bending fracture experiments. This holds true for both a series with varying cations (Li, Na, K) and one with varying Li concentration. The structural rationale for this finding is gained via Raman spectroscopy. The findings suggest that a fundamental structural relaxation mode measured on bulk specimens can serve as an effective guideline for fracture toughness of oxide glasses. Data for additional silicate glasses support this conclusion.</abstract>
    <parentTitle language="eng">Materials Today Advances</parentTitle>
    <identifier type="issn">2590-0498</identifier>
    <identifier type="doi">10.1016/j.mtadv.2025.100669</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-651540</identifier>
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    <enrichment key="date_peer_review">19.01.2026</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Marco Holzer</author>
    <author>Sidsel M. Johansen</author>
    <author>Johan F.S. Christensen</author>
    <author>Morten M. Smedskjaer</author>
    <author>Maria Rita Cicconi</author>
    <author>Dominique de Ligny</author>
    <author>Ralf Müller</author>
    <author>Andrea S.S. de Camargo</author>
    <author>Robert Maaß</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fracture toughness</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Oxide glass</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mechanical properties</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Alkali-aluminosilicate glasses</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Internal friction</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">5 Werkstofftechnik</collection>
    <collection role="institutes" number="">5.6 Glas</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="institutes" number="">5.0 Abteilungsleitung und andere</collection>
    <collection role="themenfelder" number="">Materialdesign</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/65154/Direct con. betw. secondary relax. mode and fracture toughness in alkali-aluminosilicate glasses.pdf</file>
  </doc>
  <doc>
    <id>62295</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>25</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>Wiley-VCH</publisherName>
    <publisherPlace>Weinheim</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
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    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Concepts for a Semantically Accessible Materials Data Space: Overview over Specific Implementations in Materials Science</title>
    <abstract language="eng">This article describes advancements in the ongoing digital transformation in materials science and engineering. It is driven by domain‐specific successes and the development of specialized digital data spaces. There is an evident and increasing need for standardization across various subdomains to support science data exchange across entities. The MaterialDigital Initiative, funded by the German Federal Ministry of Education and Research, takes on a key role in this context, fostering collaborative efforts to establish a unified materials data space. The implementation of digital workflows and Semantic Web technologies, such as ontologies and knowledge graphs, facilitates the semantic integration of heterogeneous data and tools at multiple scales. Central to this effort is the prototyping of a knowledge graph that employs application ontologies tailored to specific data domains, thereby enhancing semantic interoperability. The collaborative approach of the Initiative's community provides significant support infrastructure for understanding and implementing standardized data structures, enhancing the efficiency of data‐driven processes in materials development and discovery. Insights and methodologies developed via the MaterialDigital Initiative emphasize the transformative potential of ontology‐based approaches in materials science, paving the way toward simplified integration into a unified, consolidated data space of high value.</abstract>
    <parentTitle language="eng">Advanced Engineering Materials</parentTitle>
    <identifier type="doi">10.1002/adem.202401092</identifier>
    <identifier type="issn">1527-2648</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-622952</identifier>
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    <enrichment key="date_peer_review">06.01.2025</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Bernd Bayerlein</author>
    <author>Jörg Waitelonis</author>
    <author>Henk Birkholz</author>
    <author>Matthias Jung</author>
    <author>Markus Schilling</author>
    <author>Philipp v. Hartrott</author>
    <author>Marian Bruns</author>
    <author>Jörg Schaarschmidt</author>
    <author>Kristian Beilke</author>
    <author>Marcel Mutz</author>
    <author>Vincent Nebel</author>
    <author>Veit Königer</author>
    <author>Lisa Beran</author>
    <author>Tobias Kraus</author>
    <author>Akhilesh Vyas</author>
    <author>Lars Vogt</author>
    <author>Moritz Blum</author>
    <author>Basil Ell</author>
    <author>Ya‐Fan Chen</author>
    <author>Tina Waurischk</author>
    <author>Akhil Thomas</author>
    <author>Ali Riza Durmaz</author>
    <author>Sahar Ben Hassine</author>
    <author>Carina Fresemann</author>
    <author>Gordian Dziwis</author>
    <author>Hossein Beygi Nasrabadi</author>
    <author>Thomas Hanke</author>
    <author>Melissa Telong</author>
    <author>Stephan Pirskawetz</author>
    <author>Mohamed Kamal</author>
    <author>Thomas Bjarsch</author>
    <author>Ursula Pähler</author>
    <author>Peter Hofmann</author>
    <author>Mena Leemhuis</author>
    <author>Özgür L. Özçep</author>
    <author>Lars‐Peter Meyer</author>
    <author>Birgit Skrotzki</author>
    <author>Jörg Neugebauer</author>
    <author>Wolfgang Wenzel</author>
    <author>Harald Sack</author>
    <author>Chris Eberl</author>
    <author>Pedro Dolabella Portella</author>
    <author>Tilmann Hickel</author>
    <author>Lutz Mädler</author>
    <author>Peter Gumbsch</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Semantic Interoperability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Data Spaces</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Integration Workflows</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>MaterialDigital</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">5 Werkstofftechnik</collection>
    <collection role="institutes" number="">5.2 Metallische Hochtemperaturwerkstoffe</collection>
    <collection role="institutes" number="">5.6 Glas</collection>
    <collection role="institutes" number="">6 Materialchemie</collection>
    <collection role="institutes" number="">6.4 Materialinformatik</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.1 Baustoffe</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Circular Economy</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Materialdesign</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/62295/Adv Eng Mater - 2024 - Bayerlein.pdf</file>
  </doc>
  <doc>
    <id>58767</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>6</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>622</volume>
    <type>article</type>
    <publisherName>Elsevier B.V.</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Silicate glass fracture surface energy calculated from crystal structure and bond-energy data</title>
    <abstract language="eng">We present a novel method to predict the fracture surface energy, γ, of isochemically crystallizing silicate glasses using readily available crystallographic structure data of their crystalline counterpart and tabled diatomic chemical bond energies, D0. The method assumes that γ equals the fracture surface energy of the most likely cleavage plane of the crystal. Calculated values were in excellent agreement with those calculated from glass density, network connectivity and D0 data in earlier work. This finding demonstrates a remarkable equivalence between crystal cleavage planes and glass fracture surfaces.</abstract>
    <parentTitle language="eng">Journal of Non-Crystalline Solids</parentTitle>
    <identifier type="doi">10.1016/j.jnoncrysol.2023.122679</identifier>
    <identifier type="issn">0022-3093</identifier>
    <enrichment key="opus_doi_flag">true</enrichment>
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Published by Elsevier B.V.","name":"copyright","label":"Copyright"}],"article-number":"122679"}}</enrichment>
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    <enrichment key="date_peer_review">11.03.2024</enrichment>
    <author>Marco Holzer</author>
    <author>Tina Waurischk</author>
    <author>Janine George</author>
    <author>Robert Maaß</author>
    <author>Ralf Müller</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Glass</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fracture surface energy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Toughness</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Modeling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mechanical properties</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">5 Werkstofftechnik</collection>
    <collection role="institutes" number="">5.6 Glas</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="themenfelder" number="">Materialdesign</collection>
  </doc>
  <doc>
    <id>65337</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
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    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>14</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>166</volume>
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    <publisherName>Elsevier</publisherName>
    <publisherPlace>Amsterdam</publisherPlace>
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    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
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    <title language="eng">Ce3+-doped chalcogenide glass fibre for laser beyond 4 microns wavelength: Glass material-integrity</title>
    <abstract language="eng">The 4-μm wavelength barrier encountered for mid-infrared fibre lasing based on heavy metal fluoride glasses has been overcome. We reported, in 2021, the first continuous wave, mid-infrared fibre laser operating beyond 4 μm at room temperature in a fibre with a Ce3+-doped selenide-chalcogenide core. Defects, such as crystallites in the core glass, could cause unwanted light-scattering, diminishing fibre laser efficiency. It is important to identify such optical loss mechanisms and eradicate them. Here, we report on investigating the material nano-structure of a chalcogenide-glass lasing fibre which exhibits 7 mW laser power output; the fibre has a Ce3+-doped core (8.5 μm diameter), concentrically surrounded by an inner- and outer-cladding, where both cladding-glasses are nominally the same composition. High resolution transmission electron microscopy and electron diffraction show that the core, inner-cladding and outer-cladding of the lasing fibre are internally nano-crystallite-free and amorphous. However, the external outer surface of the last 10 m of fibre drawn, of the total 100 m, contains monoclinic GeSe2 crystallites adjacent to discrete, small (&lt;0.5 mm) wrinkled defects. The final length of fibre is drawn from the final part of the glass fibreoptic preform. The glass preform has as its outermost component an extruded chalcogenide glass tube. It is the last part of the tube which spends the longest time at high temperature inside the extruder during tube manufacture, encouraging heterogeneous nucleation at the tube outer-surface in contact with the extruder. These heterogeneous nuclei subsequently nucleate crystal growth during fibre-drawing in the outermost fibre surface.</abstract>
    <parentTitle language="eng">Optical materials</parentTitle>
    <identifier type="issn">0925-3467</identifier>
    <identifier type="doi">10.1016/j.optmat.2025.117219</identifier>
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    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>14</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>33</volume>
    <type>article</type>
    <publisherName>FapUNIFESP (SciELO)</publisherName>
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    <title language="eng">Modification of restorative glass ionomer cement with zinc oxide nanoparticles and calcium glycerophosphate microparticles: in vitro assessment of mechanical properties and antimicrobial activity</title>
    <abstract language="eng">Abstract The incorporation of bioactive agents into resin-modified glass ionomer cement (RMGIC) is a promising strategy to improve its mechanical strength and biofilm control, especially for patients with active dental caries. Objective This study aimed to evaluate the effects of incorporating ZnONPs and CaGP into RMGIC on its mechanical and microbiological properties. Design Six groups were tested: 1) RMGIC (without CaGP/ZnONPs); 2) RMGIC-1.0%ZnONPs; 3) RMGIC-2.0%ZnONPs; 4) RMGIC-3.0%CaGP; 5) RMGIC-3.0%CaGP-1.0%ZnONPs; and 6) RMGIC-3.0%CaGP-2.0%ZnONPs. The compressive strength (CS), diametral tensile strength (DTS), and surface hardness (SH) were evaluated after 24 hours and 7 days. Antimicrobial and antibiofilm activity were evaluated using agar diffusion and biofilm metabolic activity (XTT) assays. Results After 24 hours, all the groups showed similar DTS values (p0.05), except for RMGIC-3.0%CaGP-1.0%ZnONPs, which showed the highest DTS value (p&amp;lt;0.05). Comparing 24 hours and 7 days, the DTS values of RMGIC-3.0%CaGP-2.0%ZnONPs, RMGIC-3.0%CaGP, and RMGIC-3.0%CaGP-2.0%ZnONPs were similar (p=0.360). After 24 hours, the RMGIC group showed the CS highest value, followed by RMGIC-2.0%ZnONPs (p &amp;lt; 0.05). After 7 days, the RMGIC-3.0%CaGP-1.0%ZnONPs group exhibited the highest CS value, approximately 15% higher than RMGIC (p&amp;lt;0.05). The RMGIC-1.0%ZnONPs group exhibited significantly higher SH at 24 hours (p=0.621). At 7 days, the highest SH value was observed for the RMGIC-3.0%CaGP-1.0%ZnONPs group (p&amp;lt;0.05). Regarding antimicrobial and antibiofilm activity, including results from biofilm metabolism assays, the RMGIC-3.0%CaGP-1.0%ZnONPs group demonstrated the most effective antimicrobial and inhibitory effects (p&amp;lt;0.05). Conclusion This study demonstrated that adding ZnONPs and CaGP to RMGIC enhanced its mechanical and antimicrobial and antibiofilm properties, suggesting enhanced mechanical performance and improved protection against cariogenic biofilms—critical factors for successful restorative treatments. Therefore, the addition of ZnONPs and CaGP is a promising strategy to develop advanced restorative materials that improve clinical outcomes, especially for patients with active dental caries.</abstract>
    <parentTitle language="eng">Journal of Applied Oral Science</parentTitle>
    <identifier type="issn">1678-7765</identifier>
    <identifier type="doi">10.1590/1678-7757-2025-0356</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-652799</identifier>
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    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Maria Fernanda Cavalcante Meira</author>
    <author>Gabriela Leal Peres Fernandes</author>
    <author>Andréa Simone Stucchi de Camargo</author>
    <author>Leandro Piaggi Ravaro</author>
    <author>Marylyn Setsuko Arai</author>
    <author>Maria Fidela de Lima Navarro</author>
    <author>Fernanda Lourenção Brighenti</author>
    <author>Analú Barros de Oliveira</author>
    <author>Marcelle Danelon</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Resin-modified glass ionomer cement</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphate</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Zinc oxide nanoparticles</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Biofilm</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mechanical properties</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
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    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/65279/160_Danelon JAOS.pdf</file>
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    <id>65278</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>46040</pageFirst>
    <pageLast>46050</pageLast>
    <pageNumber/>
    <edition/>
    <issue>39</issue>
    <volume>10</volume>
    <type>article</type>
    <publisherName>American Chemical Society (ACS)</publisherName>
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    <title language="eng">A Dual-Mode “Turn-On” Ratiometric Luminescent Sensor Based on Upconverting Nanoparticles for Detection and Differentiation of Gram-Positive and Gram-Negative Bacteria</title>
    <abstract language="eng">Infectious bacterial diseases, intensified by antibiotic resistance, cause millions of deaths annually and pose risks beyond human health, including water and food contamination. Current diagnostics are often slow, require complex equipment, and lack specificity, highlighting the need for rapid and reliable detection methods. To address this, we developed a luminescent sensor based on NaYF4 upconverting nanoparticles (UCNPs) doped with Er3+ or Tm3+, coated with COOH-PEG4-COOH, and functionalized with vancomycin (Van) or polymyxin-B (Poly) to selectively target Gram-positive and Gram-negative bacteria, respectively. Gold nanoparticles (AuNPs) served as quenchers, enabling a ratiometric “turn-on” mechanism: upon bacterial binding, the UCNP emission, initially quenched by AuNPs, was partially restored. This allowed Differentiation through changes in the green/red (G/R) ratio for Er-UCNP@PEG4-Van and the blue/red (B/R) ratio for Tm-UCNP@PEG4-Poly. The sensor distinguished between Gram-positive and Gram-negative bacteria over a wide concentration range (0.05 to 5 × 105 CFU/mL) and showed high correlation with actual bacterial counts (r = 0.99 for S. aureus, r = 0.91 for E. coli). This platform is a potential fast, selective, and reliable tool for bacterial detection in clinical and environmental settings.</abstract>
    <parentTitle language="eng">ACS Omega</parentTitle>
    <identifier type="issn">2470-1343</identifier>
    <identifier type="doi">10.1021/acsomega.5c07006</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-652785</identifier>
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    <author>Marylyn S. Arai</author>
    <author>Gabriel V. Brambilla</author>
    <author>Bruna Carolina Corrêa</author>
    <author>Leonnam G. Merízio</author>
    <author>Natalia M. Inada</author>
    <author>Andrea S. S. de Camargo</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Lminescent sensor</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Upconverting nanoparticles</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Gram-positive and Gram-negative bacteria</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ratiometric luminescent sensors</value>
    </subject>
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    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/65278/159_Bacteria Sensor Arai et al.pdf</file>
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    <id>65280</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
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    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>13</pageLast>
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    <issue>39</issue>
    <volume>10</volume>
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    <title language="eng">Biomimetic Upconverting Nanoplatforms for Glioblastoma Bioimaging and Targeted Therapy</title>
    <abstract language="eng">Infectious bacterial diseases, intensified by antibiotic resistance, cause millions of deaths annually and pose risks beyond human health, including water and food contamination. Current diagnostics are often slow, require complex equipment, and lack specificity, highlighting the need for rapid and reliable detection methods. To address this, we developed a luminescent sensor based on NaYF4 upconverting nanoparticles (UCNPs) doped with Er3+ or Tm3+, coated with COOH-PEG4-COOH, and functionalized with vancomycin (Van) or polymyxin-B (Poly) to selectively target Gram-positive and Gram-negative bacteria, respectively. Gold nanoparticles (AuNPs) served as quenchers, enabling a ratiometric “turn-on” mechanism: upon bacterial binding, the UCNP emission, initially quenched by AuNPs, was partially restored. This allowed differentiation through changes in the green/red (G/R) ratio for Er-UCNP@PEG4-Van and the blue/red (B/R) ratio for Tm-UCNP@PEG4-Poly. The sensor distinguished between Gram-positive and Gram-negative bacteria over a wide concentration range (0.05 to 5 × 105 CFU/mL) and showed high correlation with actual bacterial counts (r = 0.99 for S. aureus, r = 0.91 for E. coli). This platform is a potential fast, selective, and reliable tool for bacterial detection in clinical and environmental settings.</abstract>
    <parentTitle language="eng">ACS Applied Nano Materials</parentTitle>
    <identifier type="issn">2574-0970</identifier>
    <identifier type="doi">10.1021/acsanm.5c04567</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-652808</identifier>
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    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Marylyn Setsuko Arai</author>
    <author>Thales Rafael Machado</author>
    <author>Beatriz Giacomelli Rodrigues da Silva</author>
    <author>Raquel Riciati do Couto Vilela</author>
    <author>Andrea Simone Stucchi de Camargo</author>
    <author>Valtencir Zucolotto</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Glioblastoma</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Homotypic targeting</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cell membrane coating</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Upconverting nanoparticles</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Temozolamide</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Near infrared bioimaging</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Drug delivery</value>
    </subject>
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    <file>https://opus4.kobv.de/opus4-bam/files/65280/161_UPCON-glioblastoma.pdf</file>
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    <id>65692</id>
    <completedYear/>
    <publishedYear>2026</publishedYear>
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    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>10</pageLast>
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    <edition/>
    <issue/>
    <volume>165</volume>
    <type>article</type>
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    <title language="eng">Functional glass ionomer cement modified with phosphate and zinc oxide nanoparticles: in vitro insights into physicomechanical behavior, cytotoxicity and antimicrobial activity</title>
    <abstract language="eng">Objectives: To evaluate the effect of incorporating zinc oxide nanoparticles (ZnONPs) and sodium trimetaphosphate microparticles (TMP) into resin-modified glass ionomer cement (RMGIC) on its physicomechanical, microbiological, and cytotoxic properties.&#13;
Methods: Six groups were prepared: 1) RMGIC (Fuji II LC); 2) RMGIC-1.0 %ZnONPs; 3) RMGIC-2.0 %ZnONPs; 4) RMGIC-14.0 %TMP; 5) RMGIC-1.0 %ZnONPs-14.0 %TMP; and 6) RMGIC-2.0 %ZnONPs-14.0 %TMP. Tensile/diametral compressive strengths (TS, DCS), surface hardness (SH) and degree of monomer conversion (%DC) were evaluated in 24 h and 7 days. Fluoride (F) release was assessed over 15 days using alternating demineralizing/remineralizing solutions. Antimicrobial/antibiofilm activity against S. mutans (UA159) was assessed through adhesion, biofilm growth measurements, and XTT assays. Cytotoxicity was tested on MDPC23 odontoblasts using the resazurin assay.&#13;
Results: The DCS for the RMGIC-2.0 %ZnONPs group was 22.5 % higher when compared to RMGIC after 24 h (p &lt;0.05); after 7 days, RMGIC-2.0 %ZnONPS-14.0 %TMP group was 23.4 % higher than RMGIC (p &lt; 0.05). For TS after 7 days, the RMGIC-2.0 %ZnONPs-14.0 % TMP group showed the highest values (37 % and 55.4 %) than RMGIC and RMGIC-14.0 % TMP, respectively (p &lt; 0.05). At 24 h, the RMGIC-2.0 %ZnONPs-14.0 %TMP Group showed the highest SH among all groups (p &lt; 0.05). The greatest effect on reducing bacterial viability was observed for the RMGIC-2.0 %ZnONPs-14.0 %TMP group (p &lt; 0.05). For cytotoxicity analysis, at 24 h, the RMGIC-1.0 %ZnONPs-14.0 %TMP group showed the highest cytocompatibility (p &lt; 0.05). At 48 and 72 h, RMGIC-1.0 %ZnONPs, RMGIC-2.0 %ZnONPs, RMGIC-1.0 %ZnONPs-14.0 %TMP and RMGIC-2.0 %ZnONPs-14.0 %TMP groups showed the lowest cytotoxicity (p &lt; 0.05)</abstract>
    <parentTitle language="eng">Journal of Dentistry</parentTitle>
    <identifier type="issn">0300-5712</identifier>
    <identifier type="doi">10.1016/j.jdent.2025.106307</identifier>
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    <author>Letícia Gonçalves Oliveira Menezes</author>
    <author>Beatriz Aiub Trajano Silveira</author>
    <author>Larissa Moreira Spinola de Castro Raucci</author>
    <author>Antônio Secco Martorano</author>
    <author>Paulo Tambasco de Oliveira</author>
    <author>Marylyn Setsuko Arai</author>
    <author>Andréa Simone Stucchi de Camargo</author>
    <author>Christian Hannig</author>
    <author>Torsten Sterzenbach</author>
    <author>Fernanda Lourenção Brighenti</author>
    <author>Analú Barros de Oliveira</author>
    <author>João Carlos Silos Moraes</author>
    <author>Marcelle Danelon</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphate and zinc oxide nanoparticles</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Glass ionomer</value>
    </subject>
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  </doc>
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    <publishedYear>2026</publishedYear>
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    <pageNumber/>
    <edition/>
    <issue>7</issue>
    <volume>52</volume>
    <type>article</type>
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    <contributingCorporation/>
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    <completedDate>--</completedDate>
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    <title language="eng">Broadband visible emission in undoped K2ZnGeO4 by near UV and X-ray excitation</title>
    <abstract language="eng">Self-activated phosphors (SAP) have attracted significant attention for a wide range of applications, including lighting, displays, scintillators, lasers, luminescence-based sensors, bioimaging, drug delivery, and luminescent security inks. In this work, we report a new white emitting SAP, α-K2ZnGeO4, synthesized by high-temperature solid-state reaction. The phosphor crystallizes in a single-phase orthorhombic structure and consists of irregularly shaped particles. Under ultraviolet (UV) and X-ray excitation the sample exhibits broad yellowish-white emission spanning the 350–800 nm spectral range, with a long-wavelength tail extending into the near-infrared region, overlapping the biological window. Average lifetime values of 20.4 and 22.6 μs were determined from the fluorescence decay curves monitored at the centre of the band (550 nm), upon excitation at 272 and 377 nm, respectively. Additionally, the decay curve of a distinct spectral feature, peaked at 385 nm, was studied upon 272 nm excitation, yielding a lifetime of 2.3 μs. The role of structural defects (donors: VO and Zni; acceptors: VZn, VGe, and Oi) in the luminescence of α-K2ZnGeO4 was also investigated. Photoluminescence spectra recorded under 366 nm and 377 nm excitation yielded CIE 1931 chromaticity coordinates of (x, y) = (0.40213, 0.46943) and (0.39326, 0.47611), respectively. The values are almost identical and correspond to yellowish-white emission, highlighting the suitability of the material as a yellowish-white phosphor in white light-emitting diodes (wLEDs).</abstract>
    <parentTitle language="eng">Ceramics International</parentTitle>
    <identifier type="issn">0272-8842</identifier>
    <identifier type="doi">10.1016/j.ceramint.2026.01.063</identifier>
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    <author>Marzieh Ghadamyari</author>
    <author>Hossein Ebrahim Hosseini</author>
    <author>Monika Michálková</author>
    <author>Andréa Simone Stucchi de Camargo</author>
    <author>Jiangkun Cao</author>
    <author>Dušan Galusek</author>
    <author>Oksana Chukova</author>
    <author>Lothar Wondraczek</author>
    <author>Luiz Gustavo Jacobsohn</author>
    <author>Róbert Klement</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Broadband emitter</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>K2ZnGeO4</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>X-ray excitation</value>
    </subject>
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    <language>eng</language>
    <pageFirst>332</pageFirst>
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    <issue>2</issue>
    <volume>4</volume>
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    <publisherName>American Chemical Society (ACS)</publisherName>
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    <title language="eng">Host–Guest Nanoparticles Incorporating a Fluorophore-Conjugated Pt(II) Complex: A Ratiometric Dual Emitter Performing as a Self-Referenced Oxygen Reporter</title>
    <abstract language="eng">Ratiometric optical sensors, which provide real-time measurements by comparing the intensities of two spectrally separated emission bands, are highly effective for monitoring oxygen levels. By combining oxygen-independent and oxygensensitive emission characteristics, they offer accurate quantification, distinguishing them from other sensor types. In this work, we designed a ratiometric optical sensor concept based on a biscyclometalated platinum(II) complex coupled with an organic naphthalonitrile-based fluorophore and incorporated it into mesoporous silica nanoparticles. This encapsulation strategy significantly improved the stability and water-dispersibility of the otherwise hydrophobic coordination compound while preventing aggregation and enhancing its photophysical properties. Both the free molecule and its nanoparticle-encapsulated form were characterized, revealing high sensitivity to oxygen variations with the unique feature of self-referenced ratiometric readout. The sensor’s response was effectively measured at the single-particle level using photoluminescence microscopy, providing temporally and spatially resolved oxygen readouts. The versatility of the system was demonstrated across different experimental setups, including suspensions, solids, and agarose-embedded forms, highlighting is adaptability to a wide range of applications. This system holds significant promise for advanced oxygen monitoring, offering a reliable tool for high-resolution detection in complex environments with multiple orthogonal readouts.</abstract>
    <parentTitle language="eng">ACS Applied Optical Materials</parentTitle>
    <identifier type="issn">2771-9855</identifier>
    <identifier type="doi">10.1021/acsaom.5c00262</identifier>
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    <author>Tobias Rex</author>
    <author>Raquel R. C. Vilela</author>
    <author>Nadine Bauer</author>
    <author>Alexander Hepp</author>
    <author>Andrea S. S. de Camargo</author>
    <author>Friedemann Kiefer</author>
    <author>Cristian A. Strassert</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Oxygen sensing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ratiometric luminescence</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Platinum (II) complex</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Dual emitter probe</value>
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    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mesoporous silica nanoprticles</value>
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    <issue/>
    <volume>42</volume>
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    <publisherPlace>Amsterdam</publisherPlace>
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    <title language="eng">Chemically complex materials enable sustainable high-performance materials</title>
    <abstract language="eng">Chemically complex materials (CCMats) 􀀀 including high-entropy alloys, oxides, and related multi-principal element systems 􀀀 offer a paradigm shift in materials design by leveraging chemical diversity to simultaneously optimize functional, structural, and sustainability criteria. The vastness of the compositional and structural space in CCMats propels the field into an expanding exploratory state. To reconcile functional and structural performance across this immense parameter space remains an open challenge. This Perspective evaluates the opportunities and challenges associated with harnessing chemical complexity across a broad spectrum of applications, such as hydrogen storage, ionic conductors, catalysis, magnetics, dielectrics, semiconductors, optical materials, and multifunctional structural systems. It is delineated how three central design strategies: targeted substitution (SUB), defect engineering (DEF), and diversity management (DIV) enable the reconciliation of high functional performance with long-term structural stability and environmental responsibility.&#13;
Advances in computational thermodynamics, microstructure simulations, machine learning, and multimodal characterization are accelerating the exploration and optimization of CCMats, while robust data infrastructures and automated synthesis workflows are emerging as essential tools for navigating their complex compositional space. By fostering cross-disciplinary knowledge transfer and embracing data-driven design, CCMats are poised to deliver next-generation materials solutions that address urgent technological, energy, and&#13;
environmental demands.</abstract>
    <parentTitle language="eng">Current Opinion in Solid State and Materials Science</parentTitle>
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    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Tilmann Hickel</author>
    <author>Anja Waske</author>
    <author>Ali Tehranchi</author>
    <author>Biswajit Bhattacharya</author>
    <author>Tomasz M. Stawski</author>
    <author>Tim-Patrick Fellinger</author>
    <author>Asad Mehmood</author>
    <author>Julia Witt</author>
    <author>Ozlem Ozcan</author>
    <author>Ana Guilherme Buzanich</author>
    <author>Sourabh Kumar</author>
    <author>Rajesh Kumar Mishra</author>
    <author>Marco Holzer</author>
    <author>Andrea Simone Stucchi de Camargo</author>
    <author>Leonardo Agudo Jácome</author>
    <author>Anna Manzoni</author>
    <author>Andrea Fantin</author>
    <author>Elisabeth John</author>
    <author>Vasile-Dan Hodoroaba</author>
    <author>Sophia Bührig</author>
    <author>Jegatheesan Murugan</author>
    <author>Niklas Marschall</author>
    <author>Janine George</author>
    <author>Reza Darvishi Kamachali</author>
    <author>Robert Maaß</author>
    <author>Franziska Emmerling</author>
    <subject>
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      <value>Chemically complex materials</value>
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      <value>Structural stability</value>
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      <value>Functional performance</value>
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    <subject>
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      <value>Design strategies</value>
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      <language>eng</language>
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      <value>Sustainability</value>
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    <collection role="institutes" number="">3 Gefahrgutumschließungen; Energiespeicher</collection>
    <collection role="institutes" number="">5 Werkstofftechnik</collection>
    <collection role="institutes" number="">5.1 Mikrostruktur Design und Degradation</collection>
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    <collection role="institutes" number="">3.6 Elektrochemische Energiematerialien</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
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