TY - RPRT
A1 - Seah, M.P.
A1 - Spencer, S.J.
A1 - Bensebaa, F.
A1 - Vickridge, I.
A1 - Danzebrink, H.
A1 - Krumrey, M.
A1 - Gross, Thomas
A1 - Österle, Werner
A1 - Wendler, E.
A1 - Rheinländer, B.
A1 - Azuma, Y.
A1 - Kojima, I.
A1 - Suzuki, N.
A1 - Suzuki, M.
A1 - Tanuma, S.
A1 - Moon, D.W.
A1 - Lee, H.J.
A1 - Cho, H.M.
A1 - Chen, H.Y.
A1 - Wee, A. T. S.
A1 - Osipowicz, T.
A1 - Pan, J.S.
A1 - Jordaan, W.A.
A1 - Hauert, R.
A1 - Klotz, U.
A1 - van der Marel, C.
A1 - Verheijen, M.
A1 - Tamminga, Y.
A1 - Jeynes, C.
A1 - Bailey, P.
A1 - Biswas, S.
A1 - Falke, U.
A1 - Nguyen, N.V.
A1 - Chandler-Horowitz, D.
A1 - Ehrstein, J.R.
A1 - Muller, D.
A1 - Dura, J.A.
T1 - Ultra-thin SiO2 on Si, Part V: Results of a CCQM Pilot Study of Thickness Measurements
KW - SiO2
KW - Thin films
KW - Thickness
KW - XPS
KW - Ellipsometry
KW - TEM
PY - 2003
SN - 1473-2734
SP - 57 pages
AN - OPUS4-4118
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Kirilina, E.
A1 - Helbling, S.
A1 - Morawski, M.
A1 - Pine, K.
A1 - Reimann, K.
A1 - Jankuhn, S.
A1 - Dinse, J.
A1 - Deistung, A.
A1 - Reichenbach, J. R.
A1 - Trampel, R.
A1 - Geyer, S.
A1 - Müller, Larissa
A1 - Jakubowski, Norbert
A1 - Arendt, T.
A1 - Bazin, P.-L.
A1 - Weiskopf, N.
T1 - Superficial white matter imaging: Contrast mechanisms and whole-brain in vivo mapping
N2 - Superficial white matter (SWM) contains the most cortico-cortical white matter connections in the human brain encompassing the short U-shaped association fibers. Despite its importance for brain connectivity, very little is known about SWM in humans, mainly due to the lack of noninvasive imaging methods. Here, we lay the groundwork for systematic in vivo SWM mapping using ultrahigh resolution 7 T magnetic resonance imaging. Using biophysical modeling informed by quantitative ion beam microscopy on postmortem brain tissue, we demonstrate that MR contrast in SWM is driven by iron and can be linked to the microscopic iron distribution. Higher SWM iron concentrations were observed in U-fiber–rich frontal, temporal, and parietal areas, potentially reflecting high fiber density or late myelination in these areas. Our SWM mapping approach provides the foundation for systematic studies of interindividual differences, plasticity, and pathologies of this crucial structure for cortico-cortical connectivity in humans.
KW - Magnetic resonance imaging
KW - Laser ablation
KW - ICP-MS
KW - Brain
KW - Imaging
PY - 2020
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-514430
DO - https://doi.org/10.1126/sciadv.aaz9281
SN - 2375-2548
VL - 6
IS - 41
SP - eaaz9281
PB - American Association for the Advancement of Science (Science/AAAS)
CY - Washington, DC, USA
AN - OPUS4-51443
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Deubener, J.
A1 - Allix, M.
A1 - Davis, M.J.
A1 - Duran, A.
A1 - Höche, T.
A1 - Honma, T.
A1 - Komatsu, T.
A1 - Krüger, S.
A1 - Mitra, I.
A1 - Müller, Ralf
A1 - Nakane, S.
A1 - Pascual, M.J.
A1 - Schmelzer, J.W.
A1 - Zanotto, E.D.
A1 - Zhou, S.
T1 - Updated definition of glass-ceramics
N2 - Glass-ceramics are noted for their unusual combination of properties and manifold commercialized products for consumer and specialized markets. Evolution of novel glass and ceramic processing routes, a plethora of new compositions, and unique exotic nano- and microstructures over the past 60 years led us to review the Definition of glass-ceramics. Well-established and emerging processing methods, such as co-firing, additive manufacturing, and laser patterning are analyzed concerning the core requirements of processing glass-ceramics and the Performance of the final products. In this communication, we propose a revised, updated definition of glass-ceramics, which reads “Glass-ceramics are inorganic, non-metallic materials prepared by controlled crystallization of glasses via different processing methods. They contain at least one type of functional crystalline phase and a residual glass. The volume fraction crystallized may vary from ppm to almost 100%”.
KW - Glass-ceramics definition
PY - 2018
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-464711
DO - https://doi.org/10.1016/j.jnoncrysol.2018.01.033
SN - 0022-3093
SN - 1873-4812
VL - 501
SP - 3
EP - 10
PB - Elsevier B.V.
AN - OPUS4-46471
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Müller, R.
A1 - Boenke, T.
A1 - Dörfler, S.
A1 - Abendroth, T.
A1 - Härtel, P.
A1 - Althues, H.
A1 - Kaskel, S.
A1 - Kardjilov, N.
A1 - Markötter, Henning
A1 - Sintschuk, Michael
A1 - Hilger, A.
A1 - Manke, I.
A1 - Risse, S.
T1 - Multimodal Operando Analysis of Lithium Sulfur Multilayer Pouch Cells: An In-Depth Investigation on Cell Component Design and Performance
N2 - This study presents an innovative operando analysis of lithium-sulfur (Li/S) multilayer pouch cells, employing a combination of lab-source and synchrotron x-ray imaging to investigate sulfur crystallite dissolution and lithium dendrite formation. By integrating advanced X-ray imaging, impedance spectroscopy, and simultaneous monitoring of temperature and pressure, the research uncovers critical insights into the behavior of active and inactive cell components. The analysis reveals significant degradation increments, primarily driven by side product accumulation and the deterioration of lithium microstructures, which contribute to performance loss over cycling. Additionally, temperature distribution analysis shows a strong correlation between joule heating, polarization resistance, and the observed endothermic processes during crystallization. These findings provide a comprehensive understanding of the mechanistic processes within industrially relevant pouch cells, highlighting opportunities for optimizing Li/S cell designs and advancing high-energy-density battery systems for commercial applications.
KW - Current collector perforation
KW - Impedance spectroscopy
KW - Lthium sulfur batteries
KW - Multilayer pouch cells
KW - X-ray imaging
PY - 2025
DO - https://doi.org/10.1002/aenm.202404256
SP - 1
EP - 12
PB - Wiley VHC-Verlag
AN - OPUS4-62436
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Spange, S.
A1 - Seifert, Alexander
A1 - Müller, Hansjörg
A1 - Hesse, S.
A1 - Jäger, Christian
T1 - Fabrication of chromophoric xerogels by senergistic combination of nucleophilic aromatic substitution and the sol-gel process
N2 - The nucleophilic substitution of fluorine of aromatic compounds with n-aminoalkyl trialkoxysilanes and consecutive sol-gel process have been used for the fabrication of various chromophoric sol-gel materials. The displacement of the fluoro substituent of an activated aromatic molecule occurs by a primary or secondary amino group of (CH3O)3Si-(CH2)3-NHR [R- = H-; CH3-, (CH3O)3Si-(CH2)3-] in tetraalkoxysilane or alcohol as solvent and the sol-gel process can be carried in the same vessel. The HF formed is trapped by a tertiary amine and simultaneously serves as the catalyst for the sol-gel process. Various aromatic compounds have been checked for this purpose: 1-(4-fluorophenyl)-2-nitroethylene, 1-(4-fluorophenyl)-2,2-dicyanoethylene, 4-fluorobenzonitrile, 4-fluoronitrobenzene, 4,4prime-difluorobenzophenone, 4,4prime-difluorobenzil, 7,7prime-difluorodibenzylideneacetone, tetrafluoro-p-benzoquinone, and 1,5-difluoro-2,4-dinitrobenzene. Mono and disubstitution has been studied by UV/Vis- and solid state NMR spectroscopy of the xerogels.
PY - 2003
DO - https://doi.org/10.1023/A:1020789318803
SN - 0928-0707
SN - 1573-4846
VL - 26
SP - 77
EP - 81
PB - Kluwer Academic Publ.
CY - Dordrecht
AN - OPUS4-2128
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Abou-Ras, D.
A1 - Caballero, R.
A1 - Fischer, C.-H.
A1 - Kaufmann, C.A.
A1 - Lauermann, I.
A1 - Mainz, R.
A1 - Mönig, H.
A1 - Schöpke, A.
A1 - Stephan, C.
A1 - Streeck, C.
A1 - Schorr, S.
A1 - Eicke, A.
A1 - Döbeli, M.
A1 - Gade, B.
A1 - Hinrichs, J.
A1 - Nunney, T.
A1 - Dijkstra, H.
A1 - Hoffmann, V.
A1 - Klemm, D.
A1 - Efimova, V.
A1 - Bergmaier, A.
A1 - Dollinger, G.
A1 - Wirth, Thomas
A1 - Unger, Wolfgang
A1 - Rockett, A.A.
A1 - Perez-Rodriguez, A.
A1 - Alvarez-Garcia, J.
A1 - Izquierdo-Roca, V.
A1 - Schmid, T.
A1 - Choi, P.-P.
A1 - Müller, M.
A1 - Bertram, F.
A1 - Christen, J.
A1 - Khatri, H.
A1 - Collins, R.W.
A1 - Marsillac, S.
A1 - Kötschau, I.
T1 - Comprehensive comparison of various techniques for the analysis of elemental distributions in thin films
N2 - The present work shows results on elemental distribution analyses in Cu(In,Ga)Se2 thin films for solar cells performed by use of wavelength-dispersive and energy-dispersive X-ray spectrometry (EDX) in a scanning electron microscope, EDX in a transmission electron microscope, X-ray photoelectron, angle-dependent soft X-ray emission, secondary ion-mass (SIMS), time-of-flight SIMS, sputtered neutral mass, glow-discharge optical emission and glow-discharge mass, Auger electron, and Rutherford backscattering spectrometry, by use of scanning Auger electron microscopy, Raman depth profiling, and Raman mapping, as well as by use of elastic recoil detection analysis, grazing-incidence X-ray and electron backscatter diffraction, and grazing-incidence X-ray fluorescence analysis. The Cu(In,Ga)Se2 thin films used for the present comparison were produced during the same identical deposition run and exhibit thicknesses of about 2 µm. The analysis techniques were compared with respect to their spatial and depth resolutions, measuring speeds, availabilities, and detection limits.
KW - Elemental distributions
KW - Comparison
KW - Depth profiling
KW - Chemical mapping
KW - Thin films
KW - Solar cells
KW - Chalcopyrite-type
KW - Cu(In,Ga)Se2
PY - 2011
DO - https://doi.org/10.1017/S1431927611000523
SN - 1431-9276
SN - 1435-8115
VL - 17
IS - 5
SP - 728
EP - 751
PB - Cambridge University Press
CY - New York, NY
AN - OPUS4-24506
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Albert, F.
A1 - Baum, S.
A1 - Goecke, S.
A1 - Müller, A.
A1 - Sievi, P.
A1 - Rethmeier, Michael
T1 - Nahtgeführtes Laserstrahl-Remoteschweißen mit Strahloszillation - Beeinflussung der Schweißnahtanmutung, der Schweißnahtgeometrie und der Spaltüberbrückbarkeit
PY - 2013
SN - 0036-7184
VL - 65
IS - 9
SP - 631
EP - 635
PB - Verl. für Schweißen u. Verwandte Verfahren, DVS-Verl.
CY - Düsseldorf
AN - OPUS4-29300
LA - deu
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Chen, Ya‐Fan
A1 - Arendt, Felix
A1 - Bornhöft, Hansjörg
A1 - de Camargo, Andréa S. S.
A1 - Deubener, Joachim
A1 - Diegeler, Andreas
A1 - Gogula, Shravya
A1 - Contreras Jaimes, Altair T.
A1 - Kempf, Sebastian
A1 - Kilo, Martin
A1 - Limbach, René
A1 - Müller, Ralf
A1 - Niebergall, Rick
A1 - Pan, Zhiwen
A1 - Puppe, Frank
A1 - Reinsch, Stefan
A1 - Schottner, Gerhard
A1 - Stier, Simon
A1 - Waurischk, Tina
A1 - Wondraczek, Lothar
A1 - Sierka, Marek
T1 - Ontology‐Based Digital Infrastructure for Data‐Driven Glass Development
N2 - 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.
KW - Digitalisation
KW - Data-driven glass development
KW - Ontology
PY - 2025
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-625844
DO - https://doi.org/10.1002/adem.202401560
SN - 1527-2648
SP - 1
EP - 12
PB - Wiley VHC-Verlag
AN - OPUS4-62584
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Wipfler, B.
A1 - Bradler, S.
A1 - Büsse, S.
A1 - Hammel, J.
A1 - Müller, Bernd R.
A1 - Pass, G.
T1 - Evolutionary morphology of the antennal heart in stick and leaf insects (Phasmatodea) and webspinners (Embioptera) (Insecta: Eukinolabia)
N2 - The morphology of the antennal hearts in the head of Phasmatodea and Embioptera was investigated with particular reference to phylogenetically relevant key taxa. The antennal circulatory organs of all examined species have the same basic construction: they consist of antennal vessels that are connected to ampullae located in the head near the antenna base. The ampullae are pulsatile due to associated muscles, but the points of attachment differ between the species studied. All examined Phasmatodea species have a Musculus (M.) interampullaris which extends between the two ampullae plus a M. ampulloaorticus that runs from the ampullae to the anterior end of the aorta; upon contraction, all these muscles dilate the lumina of both ampullae at the same time. In Embioptera, only the australembiid Metoligotoma has an M. interampullaris. All other studied webspinners instead have a M. ampullofrontalis which extends between the ampullae and the frontal region of the head capsule; these species do not have M. ampulloaorticus. Outgroup comparison indicates that an antennal heart with a M. interampullaris is the plesiomorphic character state among Embioptera and the likely ground pattern of the taxon Eukinolabia. Antennal hearts with a M. ampullofrontalis represent a derived condition that occurs among insects only in some embiopterans. These findings help to further clarify the controversially discussed internal phylogeny of webspinners by supporting the view that Australembiidae are the sister group of the remaining Embioptera.
KW - Phylogeny
KW - Polyneoptera
KW - Metoligotoma
PY - 2021
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-527795
DO - https://doi.org/10.1007/s00435-021-00526-4
SN - 1432-234X
VL - 140
IS - 3
SP - 331
EP - 340
PB - Springer
AN - OPUS4-52779
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Herzel, Hannes
A1 - Dombinov, V.
A1 - Vogel, Christian
A1 - Willbold, S.
A1 - Levandowski, G. V.
A1 - Meiller, M.
A1 - Müller, F.
A1 - Zang, J. W.
A1 - da Fonseca-Zang, W. A.
A1 - Jablonowski, N. D.
A1 - Schrey, S. D.
A1 - Adam, Christian
T1 - Soybean Fertilized by P-Phases from Bagasse-Based Materials: P-Extraction Procedures, Diffusive Gradients in Thin Films (DGT), and X-ray Diffraction Analysis (XRD)
N2 - The Brazilian sugarcane industry produced around 173 million tons (Mt) of bagasse in 2018. Bagasse is a by-product of juice extraction for ethanol and sugar production and is combusted in order to generate power, producing up to 10 Mt of ash per year. This ash contains various concentrations of plant nutrients, which allow the ash to be used as a crop fertilizer. However, the concentration and extractability of phosphorus (P), an essential plant nutrient, are low in bagasse ash. To increase the P content, we co-gasified and co-combusted bagasse with P-rich chicken manure. The resulting ash was thermochemically post-treated with alkali additives (Na2SO4 and K2SO4) to increase the availability of P to plants. We aimed to: (i) investigate the effect of thermochemical post-treatment of co-gasification residue and co-combustion ash on P availability to soybeans, (ii) explore the potential of chemical extraction methods (citric acid, neutral ammonium citrate, formic acid, and Mehlich-I) and diffusive gradients in thin films (DGT) to predict the availability of P to soybeans, and (iii) identify the responsible P-phases using X-ray diffraction . We evaluated P availability to soybeans growing in Brazilian Oxisol soil in two independent greenhouse pot experiments. The positive effect of thermochemical treatment on P availability from gasification residue was confirmed through the observation of increased P uptake and biomass in soybean plants. These findings were confirmed by chemical extraction methods and DGT. The gasification residue contained whitlockite as its main P-bearing phase. Thermochemical post-treatment converted whitlockite into highly soluble CaNaPO4. In contrast, co-combustion ash already contained highly soluble Ca(Na,K)PO4 as its main P-bearing phase, making thermochemical post-treatment unnecessary for increasing P availability. In conclusion, increased extractability and availability of P for soybeans were closely connected to the formation of calcium alkali phosphate. Our findings indicate that this combined methodology allows for the prediction of P-fertilization effects of ash.
KW - Sugar cane bagasse
KW - Chicken manure ash
KW - Thermochemical treatment
KW - Nutrient
KW - Plant availability
PY - 2020
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-509735
DO - https://doi.org/10.3390/agronomy10060895
VL - 10
SP - 895
EP - 6
PB - MDPI
AN - OPUS4-50973
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Miccoli, Lorenzo
A1 - Müller, U.
A1 - Silva, B.
A1 - Da Porto, F.
A1 - Hracov, S.
A1 - Pospisil, S.
A1 - Adami, C.-E.
A1 - Vintzileou, E.
A1 - Vasconcelos, G.
A1 - Poletti, E.
ED - Jasienko, J.
T1 - Overview of different strengthening techniques applied on walls used in historical structures
N2 - Different types of vertical elements, such as masonry, massive walls and timber frame elements, exhibit a different response exposed to the same loading scenario, in particular when it concerns dynamic loading. It is therefore paramount to investigate the principal response of different types of construction with different materials under a variety of loading scenarios. From there, the design of strengthening techniques against earthquakes can be performed. This paper presents the results from experiments, where various retrofitting techniques were tested. The goals were to define and improve laboratory procedures for evaluating the intervention technologies and specifications for laboratory specimens. From this base tests to characterise the experimental behaviour of original and strengthened masonry walls were performed, in order to obtain information on the system performance and the main constitutive laws relevant for modelling. The test campaigns were focused on static tests as well as cyclic tests of unreinforced and reinforced vertical building elements. The study is part of our work in the framework of the ongoing project NIKER funded by the European Commission dealing with improving immovable Cultural Heritage assets against the risk of earthquakes.
T2 - SAHC 2012 - 8th International conference on structural analysis of historical constructions
CY - Wroclaw, Poland
DA - 15.10.2012
KW - Stone masonry
KW - Brick masonry
KW - Earthen materials
KW - Half timbered walls
KW - Grouting
PY - 2012
SN - 978-83-7125-216-7
SN - 0860-2395
VL - 3
SP - 2870
EP - 2878
PB - DWE
CY - Wroclaw, Poland
AN - OPUS4-27275
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Miccoli, Lorenzo
A1 - Pospísil, S.
A1 - Müller, U.
A1 - Hracov, S.
T1 - Verhalten von Lehmstein- und Stampflehmwänden unter dynamischer Belastung und Effizienz von Bewehrungsmaßnahmen
N2 - Lehmbauten repräsentieren einen bedeutenden Teil des kulturellen Erbes. Sie erfordern einen hohen Erhaltungsaufwand und wenngleich die Beschädigung sowie der Einsturz solcher Wohngebäude zum Verlust von Menschenleben führen, sind Erdbeben ebenso verheerend für das gebaute kulturelle Erbe in diesen Regionen. In der Tat wird es häufig übersehen, dass ein bedeutender Teil der Weltkulturerbestätten, die gefährdet sind, aus Lehm gebaut sind.
T2 - Lehm 2012 - 6. Internationale Fachtagung für Lehmbau
CY - Weimar, Germany
DA - 05.10.2012
KW - Earth blocks
KW - Rammed earth
KW - Static loads
KW - Dynamic loads
KW - Cyclic tests
PY - 2012
SN - 978-3-00-039649-6
IS - Session C
SP - 122
EP - 133
AN - OPUS4-26935
LA - deu
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Dombinov, V.
A1 - Herzel, Hannes
A1 - Meiller, M.
A1 - Müller, F.
A1 - Willbold, S.
A1 - Zang, J. W.
A1 - da Fonseca-Zang, W. A.
A1 - Adam, Christian
A1 - Klose, H.
A1 - Poorter, H.
A1 - Jablonowski, N. D.
A1 - Schrey, S. D.
T1 - Sugarcane bagasse ash as fertilizer for soybeans: Effects of added residues on ash composition, mineralogy, phosphorus extractability and plant availability
N2 - Sugarcane bagasse is commonly combusted to generate energy. Unfortunately, recycling strategies rarely consider the resulting ash as a potential fertilizer. To evaluate this recycling strategy for a sustainable circular economy, we characterized bagasse ash as a fertilizer and measured the effects of co-gasification and co-combustion of bagasse with either chicken manure or sewage sludge: on the phosphorus (P) mass fraction, P-extractability, and mineral P phases. Furthermore, we investigated the ashes as fertilizer for soybeans under greenhouse conditions. All methods in combination are reliable indicators helping to assess and predict P availability from ashes to soybeans. The fertilizer efficiency of pure bagasse ash increased with the ash amount supplied to the substrate. Nevertheless, it was not as effective as fertilization with triple-superphosphate and K2SO4, which we attributed to lower P availability. Co-gasification and co-combustion increased the P mass fraction in all bagasse-based ashes, but its extractability and availability to soybeans increased only when co-processed with chicken manure, because it enabled the formation of readily available Ca-alkali phosphates. Therefore, we recommend co-combusting biomass with alkali-rich residues to increase the availability of P from the ash to plants.
KW - Combustion and gasification
KW - Phosphate extractability and availability
KW - X-ray diffraction (XRD)
PY - 2022
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-567632
DO - https://doi.org/10.3389/fpls.2022.1041924
SN - 1664-462X
VL - 13
SP - 1
EP - 13
PB - Frontiers Media
CY - Lausanne
AN - OPUS4-56763
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Brandt, S.
A1 - Müller, B.
A1 - de Lima Vasconcelos, S.
A1 - Plehn, W.
A1 - Brozowski, F.
A1 - Horn, Wolfgang
A1 - Sattler, M.
T1 - Präzisierung der Geruchsprüfung für Bauprodukte nach DIN ISO 16000-28 – Untersuchung von Vergleichsmaßstäben
N2 - Bauprodukte, die in Innenräumen verwendet werden, sollten die Gesundheit und das Wohlbefinden der Personen die sich darin aufhalten nicht durch das Ausdünsten von Geruchsstoffen stören. Die DIN ISO 16000-28 „Bestimmung der Geruchsstoffemissionen aus Bauprodukten mit einer Emissionsprüfkammer“ (DIN ISO 16000-28) beschreibt umfassend die Möglichkeiten der Geruchsprüfung. In Verbindung mit der Anwendung der VDI-Richtlinie 4302 Blatt 1 „Geruchsprüfung von Innenraumluft und Emissionen aus Innenraummaterialien“ (VDI 4302 Blatt 1) ist sie zur Bewertung der empfundenen Intensität von Bauprodukten mit Vergleichsmaßstab geeignet (Umweltbundesamt 2015). In einem vom Umweltbundesamt (UBA) geförderten Forschungsprojekt der Hochschule für Technik und Wirtschaft Berlin (HTW Berlin) und der Bundesanstalt für Materialforschung und –prüfung (BAM) wurden erstmals verschiedene Vergleichsmaßstäbe miteinander verglichen. Ziel des derzeitigen Folgeprojektes ist nun, Mindestanforderungen an Vergleichsmaßstäbe zu erarbeiten, welche die Reproduzierbarkeit der Ergebnisse erhöhen und mit denen die Norm konkretisiert werden kann. Dieser Beitrag stellt die Untersuchungen und Ergebnisse des ersten Projektes und die Schlussfolgerungen für die Durchführung des zweiten Projektes dar.
T2 - 12. Fachkongress der Arbeitsgemeinschaft ökologischer Forschungsinstiute (AGÖF)
CY - Hallstadt (Bamberg), Germany
DA - 17.10.2019
KW - Geruch
KW - Emission
KW - Bauprodukte
KW - VOC
KW - Emissionskammer
PY - 2019
SN - 978-3-930576-11-1
VL - 12. Fachkongress
SP - 214
EP - 223
PB - Arbeitsgemeinschaft ökologischer Forschungsinstiute (AGÖF) e. V.
CY - Springe-Eldagsen
AN - OPUS4-49702
LA - deu
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Göbel, M.
A1 - Kirsch, S.
A1 - Schwarze, L:
A1 - Schmidt, L.
A1 - Scholz, H.
A1 - Haußmann, J.
A1 - Klages, M.
A1 - Scholta, J.
A1 - Markötter, Henning
A1 - Alrwashdeh, S.
A1 - Manke, I.
A1 - Müller, Bernd R.
T1 - Transient limiting current measurements for characterization of gas diffusion layers
N2 - The water management in proton exchange membrane fuel cells (PEMFC) is strongly influenced by the design of the gas diffusion layers (GDL). Limiting current measurements in small-scale cells operating at high stoichiometries are useful to determine the oxygen transport resistance. The oxygen transport resistance increases, once water condenses inside the GDL. In this study a new electrochemical method for voltage loss estimation of GDL induced oxygen transport losses are presented. This new method, referred to as “transient limiting current” (TLC), is compared with the literature method. TLC allows a direct estimation of oxygen transport resistance at an arbitrarily conditioned state. This study also presents a case study of liquid water visualization of a PEM fuel cell with varying GDLs types.
With the help of quasi in-situ synchrotron X-ray computed tomography and time resolved radiography measurements we investigate appearance and distribution of liquid water inside the GDLs under limiting current conditions.
KW - In-situ characterization of GDLs
KW - In-situ synchrotron X-ray computed tomography
KW - In-situ synchrotron X-ray radiography
KW - BAMline
PY - 2018
DO - https://doi.org/10.1016/j.jpowsour.2018.09.003
SN - 0378-7753
SN - 1873-2755
VL - 402
SP - 237
EP - 245
PB - Elsevier B.V.
AN - OPUS4-46552
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Alrwashdeh, S. S.
A1 - Markötter, Henning
A1 - Haußmann, J.
A1 - Hilger, A.
A1 - Klages, M.
A1 - Müller, Bernd R.
A1 - Kupsch, Andreas
A1 - Riesemeier, Heinrich
A1 - Scholta, J.
A1 - Manke, I.
T1 - Investigation of water transport in newly developed micro porous layers for polymer electrolyte membrane fuel cells
N2 - In this investigation, synchrotron X-ray imaging was used to investigate the water distribution inside newly developed gas diffusion media in polymer electrolyte membrane fuel cells. In-situ radiography was used to reveal the relationship between the structure of the microporous layer (MPL) and the water flow in a newly developed MPL equipped with randomly arranged holes. A strong influence of these holes on the overall water transport was found. This contribution provides a brief overview to some of our recent activities on this research field.
KW - Polymer electrolyte membrane fuel cell
KW - Microporous layer
KW - Water distribution
KW - Radiography
KW - Synchrotron X-ray imaging
PY - 2017
DO - https://doi.org/10.9729/AM.2017.47.3.101
SN - 2287-4445
SN - 2287-5123
VL - 47
IS - 3
SP - 101
EP - 104
AN - OPUS4-43356
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Faghani, A.
A1 - Gholami, M. F.
A1 - Trunk, M.
A1 - Müller, J.
A1 - Pachfule, P.
A1 - Vogl, S.
A1 - Donskyi, Ievgen
A1 - Li, M.
A1 - Nickl, Philip
A1 - Shao, J.
A1 - Huang, M. R. S.
A1 - Unger, Wolfgang
A1 - Arenal, R.
A1 - Koch, C. T.
A1 - Paulus, B.
A1 - Rabe, J. P.
A1 - Thomas, A.
A1 - Haag, R.
A1 - Adeli, M.
T1 - Metal-Assisted and Solvent-Mediated Synthesis of Two-Dimensional Triazine Structures on Gram Scale
N2 - Covalent triazine frameworks are an emerging material class that have shown promising performance for a range of applications. In this work, we report on a metal-assisted and solvent-mediated reaction between calcium carbide and cyanuric chloride, as cheap and commercially available precursors, to synthesize two-dimensional triazine structures (2DTSs). The reaction between the solvent, dimethylformamide, and cyanuric chloride was promoted by calcium carbide and resulted in dimethylamino-s-triazine intermediates, which in turn undergo nucleophilic substitutions. This reaction was directed into two dimensions by calcium ions derived from calcium carbide and induced the formation of 2DTSs. The role of calcium ions to direct the two-dimensionality of the final structure was simulated using DFT and further proven by synthesizing molecular intermediates. The water content of the reaction medium was found to be a crucial factor that affected the structure of the products dramatically. While 2DTSs were obtained under anhydrous conditions, a mixture of graphitic material/2DTSs or only graphitic material (GM) was obtained in aqueous solutions. Due to the straightforward and gram-scale synthesis of 2DTSs, as well as their photothermal and photodynamic properties, they are promising materials for a wide range of future applications, including bacteria and virus incapacitation.
KW - XPS
KW - Triazine
KW - 2D
PY - 2020
DO - https://doi.org/10.1021/jacs.0c02399
VL - 142
IS - 30
SP - 12976
EP - 12986
PB - ACS American Chemical Society
AN - OPUS4-51203
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Müller, Anja
A1 - Heinrich, Thomas
A1 - Tougaard, S.
A1 - Werner, W. S. M.
A1 - Hronek, M.
A1 - Kunz, Valentin
A1 - Radnik, Jörg
A1 - Stockmann, Jörg M.
A1 - Hodoroaba, Vasile-Dan
A1 - Benemann, Sigrid
A1 - Nirmalananthan-Budau, Nithiya
A1 - Geißler, Daniel
A1 - Sparnacci, K.
A1 - Unger, Wolfgang
T1 - Determining the thickness and completeness of the shell of polymer core-shell nanoparticles by X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and transmission scanning electron microscopy
N2 - Core–shell nanoparticles (CSNPs) have become indispensable in various industrial applications. However, their real internal structure usually deviates from an ideal core–shell structure. To control how the particles perform with regard to their specific applications, characterization techniques are required that can distinguish an ideal from a nonideal morphology. In this work, we investigated poly(tetrafluoroethylene)–poly(methyl methacrylate) (PTFE–PMMA) and poly(tetrafluoroethylene)–polystyrene (PTFE–PS) polymer CSNPs with a constant core diameter (45 nm) but varying shell thicknesses (4–50 nm). As confirmed by transmission scanning electron microscopy (T-SEM), the shell completely covers the core for the PTFE–PMMA nanoparticles, while the encapsulation of the core by the shell material is incomplete for the PTFE–PS nanoparticles. X-ray photoelectron spectroscopy (XPS) was applied to determine the shell thickness of the nanoparticles. The software SESSA v2.0 was used to analyze the intensities of the elastic peaks, and the QUASES software package was employed to evaluate the shape of the inelastic background in the XPS survey spectra. For the first time, nanoparticle shell thicknesses are presented, which are exclusively based on the analysis of the XPS inelastic background. Furthermore, principal component analysis (PCA)-assisted time-of-flight secondary-ion mass spectrometry (ToF-SIMS) of the PTFE–PS nanoparticle sample set revealed a systematic variation among the samples and, thus, confirmed the incomplete encapsulation of the core by the shell material. As opposed to that, no variation is observed in the PCA score plots of the PTFE–PMMA nanoparticle sample set. Consequently, the complete coverage of the core by the shell material is proved by ToF-SIMS with a certainty that cannot be achieved by XPS and T-SEM.
KW - XPS
KW - T-SEM
KW - ToF-SIMS
KW - Core-shell nanoparticles
PY - 2019
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-499165
DO - https://doi.org/10.1021/acs.jpcc.9b09258
VL - 123
IS - 49
SP - 29765
EP - 29775
PB - American Chemical Society
CY - Washington, DC
AN - OPUS4-49916
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Buckle, T.
A1 - van der Wal, S.
A1 - van Malderen, S.
A1 - Müller, Larissa
A1 - Kuil, J.
A1 - van Unen, V.
A1 - Peters, R.
A1 - van Bemmel, M.
A1 - McDonnell, L.
A1 - Velders, A.
A1 - Koning, F.
A1 - Vanhaeke, F.
A1 - van Leeuwen, F.
T1 - Hybrid imaging labels: providing the link between mass spectrometry-based molecular pathology and theranostics
N2 - Development of theranostic concepts that include inductively coupled plasma mass spectrometry (ICP-MS) and laser ablation ICP-MS (LA-ICP-MS) imaging can be hindered by the lack of a direct comparison to more standardly used methods for in vitro and in vivo evaluation; e.g. fluorescence or nuclear medicine. In this study a bimodal (or rather, hybrid) tracer that contains both a fluorescent dye and a chelate was used to evaluate the existence of a direct link between mass spectrometry (MS) and in vitro and in vivo molecular imaging findings using fluorescence and radioisotopes. At the same time, the hybrid label was used to determine whether the use of a single isotope label would allow for MS-based diagnostics.
KW - Imaging
KW - Laser Ablation ICP-MS
KW - Diagnostics
PY - 2017
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-396813
DO - https://doi.org/10.7150/thno.17484
VL - 7
IS - 3
SP - 624
EP - 633
PB - IvySpring
AN - OPUS4-39681
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - GEN
A1 - Müller, Anja
A1 - Heinrich, Thomas
A1 - Tougaard, S.
A1 - Werner, W. S. M.
A1 - Hronek, M.
A1 - Kunz, Valentin
A1 - Radnik, Jörg
A1 - Stockmann, Jörg M.
A1 - Hodoroaba, Vasile-Dan
A1 - Benemann, Sigrid
A1 - Nirmalananthan-Budau, Nithiya
A1 - Geißler, Daniel
A1 - Sparnacci, K.
A1 - Unger, Wolfgang
T1 - Correction to "Determining the thickness and completeness of the shell of polymer core-shell nanoparticles by X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and transmission scanning electron microscopy"
N2 - This is a corrigendum to the original article "Determining the thickness and completeness of the shell of polymer core-shell nanoparticles by X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and transmission scanning electron microscopy" that was published in "The journal of physical chemistry C", vol. 123 (2019), no. 49 pp. 29765-29775.
PY - 2020
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-505451
DO - https://doi.org/10.1021/acs.jpcc.0c00027
SN - 1932-7447
SN - 1932-7455
VL - 124
IS - 6
SP - 3923
PB - American Chemical Society
CY - Washington, DC
AN - OPUS4-50545
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Issever, A.S.
A1 - Diederichs, G.
A1 - Majumdar, S.
A1 - Rogalla, P.
A1 - Hamm, B.K.
A1 - Lange, Axel
A1 - Harwardt, Michael
A1 - Hentschel, Manfred P.
A1 - Müller, Bernd R.
T1 - Analyser-based tomography images of cartilage
N2 - Analyser-based imaging expands the performance of X-ray imaging by utilizing not only the absorption properties of X-rays but also the refraction and scatter rejection (extinction) properties. In this study, analyser-based computed tomography has been implemented on imaging an articular cartilage sample, depicting substructural variations, without overlay, at a pixel resolution of 3.6 µm.
KW - Cartilage
KW - Analyser-based imaging
KW - Computed tomography
PY - 2008
DO - https://doi.org/10.1107/S0909049508014829
SN - 0909-0495
SN - 1600-5775
VL - 15
IS - Part 5
SP - 525
EP - 527
PB - Blackwell Publishing
CY - Oxford
AN - OPUS4-17852
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Holzer, Marco
A1 - Johansen, Sidsel M.
A1 - Christensen, Johan F.S.
A1 - Smedskjaer, Morten M.
A1 - Cicconi, Maria Rita
A1 - de Ligny, Dominique
A1 - Müller, Ralf
A1 - de Camargo, Andrea S.S.
A1 - Maaß, Robert
T1 - Direct connection between secondary relaxation mode and fracture toughness in alkali-aluminosilicate glasses
N2 - 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.
KW - Fracture toughness
KW - Oxide glass
KW - Mechanical properties
KW - Alkali-aluminosilicate glasses
KW - Internal friction
PY - 2026
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-651540
DO - https://doi.org/10.1016/j.mtadv.2025.100669
SN - 2590-0498
VL - 29
SP - 1
EP - 10
PB - Elsevier Ltd.
CY - Amsterdam, Niederlande
AN - OPUS4-65154
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Scharlach, C.
A1 - Müller, Larissa
A1 - Wagner, S.
A1 - Kobayashi, Y.
A1 - Kratz, H.
A1 - Ebert, M.
A1 - Jakubowski, Norbert
A1 - Schellenberger, E.
T1 - LA-ICP-MS allows quantitative microscopy of europium-doped iron oxide nanoparticles and is a possible alternative to ambiguous Prussian blue iron staining
N2 - The development of iron oxide nanoparticles for biomedical applications requires accurate histological evaluation. Prussian blue iron staining is widely used but may be unspecific when tissues contain substantial endogenous iron. Here we tested whether microscopy by laser ablation coupled to inductively coupled plasma mass spectrometry (LA-ICP-MS) is sensitive enough to analyze accumulation of very small iron oxide particles (VSOP) doped with europium in tissue sections.
KW - Atherosclerotic plaques
KW - LA-ICP-MS microscopy
KW - Quantification
KW - Element microscopy
KW - Histology
PY - 2016
DO - https://doi.org/10.1166/jbn.2016.2230
SN - 1550-7033
SN - 1550-7041
VL - 12
IS - 5
SP - 1001
EP - 1010
AN - OPUS4-36189
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Müller, Christina
A1 - Scharmach, Martina
A1 - Henley, S.
T1 - Metalldetektor-Testversuche in Afghanistan März 2002 - Auswahl der am besten geeigneten Geräte
N2 - Die ROC-Diagramme der Testergebnisse spiegeln eine große Bandbreite in der Detektorleistungsfähigkeit bzw. Zuverlässigkeit wieder sowie den starken Einfluss von unkooperativen Boden bzw. Verunreinigungen während der Einfluss von Feuchtigkeit eher gering ist.
T2 - 3rd European-American Workshop on Reliability of NDE and Demining
CY - Berlin, Germany
DA - 11.09.2002
KW - Zuverlässigkeitsformel
KW - IPPTC-Test
KW - ROC-Diagramm
PY - 2002
AN - OPUS4-35851
LA - deu
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Brandt, S.
A1 - Brozowski, Frank
A1 - Horn, Wolfgang
A1 - Plehn, W.
A1 - Müller, B.
T1 - Weiterentwicklung des Geruchsmessverfahrens für Bauprodukte (Teil II): Anwendung eines Adapters und vereinfachtes Bewertungsverfahren
T1 - Further Development of the Odour Measurement Method for Building Products (Part II)
N2 - Zur Weiterentwicklung der Probenpräsentation wurde ein Adapter entwickelt, der Emissionsprüfkammer und Bewertungstrichter miteinander verbindet und dadurch eine der direkten Messung vergleichbare Geruchsbewertung ermöglicht. Die analytischen Messungen zeigen, dass es kaum Unterschiede in der Zusammensetzung der Probenluft in der Kammer im Vergleich zum Probenbehälter gibt. Bei den olfaktorischen Messungen kam es jedoch bei der Bewertung der Probenluft mit Hilfe des Adapters zu Minderbefunden. Anschließende Untersuchungen zeigten, dass beim Ausschalten des Geräts Umgebungsluft über den Trichter in den Adapter strömt und zu einer Verdünnung der Probenluft führt. Um dies zu vermeiden, werden derzeit weitere Messungen durchgeführt.
Eine weitere Versuchsreihe wurde durchgeführt, um den Messaufwand bei der Bewertung der empfundenen Intensität zu reduzieren. Die entwickelte „größer-oder-kleiner/gleich“ Abfrage kann hier hilfreich sein. Die Untersuchungen im Luftqualitätslabor und im Rahmen eines Ringversuches mit verschiedenen Laboren, zeigen, dass die Abfrage in fast allen Fällen zu den gleichen Ergebnissen führt, wie die normgerechte aber aufwendigere Ermittlung der empfundenen Intensität mithilfe des Vergleichsmaßstabes.
N2 - For technical improvement of sample presentation an adapter was developed to connect the emission test chamber with the evaluation funnel and thus enabling a more direct measurement. The analytical measurements demonstrate that the air has a very similar composition sampled at the funnel or in the emission test chamber. The results of the olfactory measurements show overall that the intensities determined using the adapter are often reported as lower. Further investigations have shown that air backflow via the funnel into the sample container of the adapter may be the cause. This has to be avoided in future.
Another experimental series was carried out to reduce the measurement effort of evaluation of perceived intensity. Here application of the developed ‘greater than, or less than/equal to’ survey could be helpful. The results of the measurements in the air quality lab and in the frame of a round robin test indicate, that the survey leads to the same evaluation as the more complex determination of perceived intensity with standard method.
KW - Geruchsmessung
KW - VOC-Emission
KW - Bauprodukte
KW - Bewertungsverfahren
PY - 2022
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-549875
UR - http://www.gefahrstoffe.de
SN - 0949-8036
SN - 1436-4891
VL - 82
IS - 3-4
SP - 83
EP - 89
PB - VDI Fachmedien
CY - Düsseldorf
AN - OPUS4-54987
LA - deu
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -