TY - JOUR
A1 - Zhao, H.
A1 - Chakraborty, Poulami
A1 - Ponge, D.
A1 - Hickel, Tilmann
A1 - Sun, B.
A1 - Wu, C.-H.
A1 - Gault, B.
A1 - Raabe, D.
T1 - Hydrogen trapping and embrittlement in high-strength Al alloys
JF - Nature
N2 - Ever more stringent regulations on greenhouse gas emissions from transportation motivate efforts to revisit materials used for vehicles. High-strength aluminium alloys often used in aircrafts could help reduce the weight of automobiles, but are susceptible to environmental degradation. Hydrogen ‘embrittlement’ is often indicated as the main culprit; however, the exact mechanisms underpinning failure are not precisely known: atomic-scale analysis of H inside an alloy remains a challenge, and this prevents deploying alloy design strategies to enhance the durability of the materials. Here we performed near-atomic-scale analysis of H trapped in second-phase particles and at grain boundaries in a high-strength 7xxx Al alloy. We used these observations to guide atomistic ab initio calculations, which show that the co-segregation of alloying elements and H favours grain boundary decohesion, and the strong partitioning of H into the second-phase particles removes solute H from the matrix, hence preventing H embrittlement. Our insights further advance the mechanistic understanding of H-assisted embrittlement in Al alloys, emphasizing the role of H traps in minimizing cracking and guiding new alloy design.
KW - Atomistic models
KW - Hydrogen
KW - Metals and alloys
KW - Mechanical properties
PY - 2022
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-543631
DO - https://doi.org/10.1038/s41586-021-04343-z
SN - 1476-4687
VL - 602
IS - 7897
SP - 437
EP - 441
PB - Nature Publ. Group
CY - London
AN - OPUS4-54363
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zietzschmann, F.
A1 - Dittmar, S.
A1 - Splettstößer, L.
A1 - Hunsicker, J.
A1 - Dittmann, Daniel
A1 - Meinel, F.
A1 - Rößler, A.
A1 - Metzger, S.
A1 - Jekel, M.
A1 - Ruhl, A. S.
T1 - Fast empirical lab method for performance projections of large-scale powdered activated carbon re-circulation plants
JF - Chemosphere
N2 - Powdered activated carbon (PAC) for organic micro-pollutant (OMP) removal can be applied effectively on wastewater treatment plant (WWTP) effluents by using re-circulation schemes, accumulating the PAC in the system. This technique is complex because several factors are unknown: (i) the PAC concentration in the system, (ii) specific and average contact times of PAC particles, and (iii) PAC particle loadings with target compounds/competing water constituents. Thus, performance projections (e.g. in the lab) are very challenging. We sampled large-scale PAC plants with PAC sludge re-circulation on eight different WWTPs. The PAC plant-induced OMP removals were notably different, even when considering PAC concentrations in proportion to background organic sum parameters. The variability is likely caused by differing PAC products, varying water composition, differently effective plant/re-circulation operation, and variable biodegradation. Plant PAC samples and parts of the PAC plant influent samples were used in laboratory tests, applying multiples (0.5, 1, 2, 4) of the respective large-scale “fresh” PAC doses, and several fixed contact times (0.5, 1, 2, 4, 48 h). The aimwas to empirically identify suitable combinations of lab PAC dose (as multiples of the plant PAC dose) and contact time, which represent the PAC plant
performances in removing OMPs (for specific OMPs at single locations, and for averages of different OMPs at all locations). E.g., for five well adsorbing, little biodegradable OMPs, plant performances can be projected by using a lab PAC dose of twice the respective full-scale PAC dose and 4 h lab contact time (standard deviation of 13 %-points).
KW - Adsorption
KW - Powdered activated carbon
KW - Organic micro-pollutant
KW - Trace organic contaminant
PY - 2019
DO - https://doi.org/10.1016/j.chemosphere.2018.10.055
VL - 215
SP - 563
EP - 573
PB - Elsevier Ltd.
AN - OPUS4-46957
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zocca, Andrea
A1 - Müller, Bernd R.
A1 - Laquai, René
A1 - Kupsch, Andreas
A1 - Wieder, Frank
A1 - Benemann, Sigrid
A1 - Wilbig, Janka
A1 - Günster, Jens
A1 - Bruno, Giovanni
T1 - Microstructural characterization of AP40 apatite-wollastonite glass-ceramic
JF - Ceramics international
N2 - The microstructure of an apatite-wollastonite (code name AP40) glass-ceramic is analyzed in this study by combining 2D microscopy, phase analysis, X-ray absorption and synchrotron X-ray refraction computed tomography (XCT and SXRCT, respectively). It is shown that this combination provides a useful toolbox to characterize the global microstructure in a wide scale range, from sub-micrometer to millimeter. The material displays a complex microstructure comprising a glassy matrix with embedded fluorapatite and wollastonite small crystals. In this matrix, large (up to 200 μm) spike-shaped structures are distributed. Such microstructural features are oriented around a central sphere, thereby forming a structure resembling a sea urchin. A unique feature of SXRCT, in contrast to XCT, is that internal interfaces are visualized; this allows one to show the 3D distribution of these urchins with exceptionally good contrast. Furthermore, it is revealed that the spike-shaped structures are not single crystals, but rather composed of sub-micrometric crystals, which are identified as fluorapatite and diopside phases by SEM-EDX analysis.
KW - Glass-ceramic
KW - X-ray refraction
KW - Computed tomography
KW - Microstructure
PY - 2023
DO - https://doi.org/10.1016/j.ceramint.2022.12.130
SN - 0272-8842
VL - 49
IS - 8
SP - 12672
EP - 12679
PB - Elsevier Science
CY - Amsterdam
AN - OPUS4-57452
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zorn, R.
A1 - Lohstroh, W.
A1 - Zamponi, M.
A1 - Harrison, W.
A1 - Budd, P.
A1 - Böhning, Martin
A1 - Schönhals, Andreas
T1 - Molecular mobility of a polymer of intrinsic microporosity revealed by quasielastic neutron scattering
JF - Macromolecules
N2 - Quasielastic neutron scattering by employing a combination of time-of-flight and backscattering techniques is carried out to explore the molecular mobility of a polymer of intrinsic microporosity (PIM-1) at microscopic time scales in comparison with a high-performance polyimide. Molecular fluctuations can change the structure of the temporary network of micropores and open or close pathways for gas molecules. Therefore, the investigation might help to understand the selectivity of PIMs in gas separation processes. The performed neutron scattering experiments provide evidence for a low-temperature relaxation process, which was assigned to methyl group rotation. This methyl group rotation was analyzed in terms of jump diffusion in a three-fold potential. The analysis results in a fraction of methyl groups which are immobilized. For PIM-1 it was found that the fraction of immobilized methyl groups decreases with increasing temperature up to 350 K. At higher temperatures the number of immobilized methyl group increases gain due to an underlying relaxation process. This motional process on a somewhat larger length scale might lead to a reversible structural rearrangement which partially hinders the strongly localized methyl group rotation. In addition, it was found that the activation energy for the methyl group rotation for PIM-1 and the polyimide is significantly higher than for conventional polymers.
KW - Polymer of intrinsic microporosity
KW - Quasielastic neutron scattering
PY - 2020
DO - https://doi.org/10.1021/acs.macromol.0c00963
SN - 0024-9297
SN - 1520-5835
VL - 53
IS - 15
SP - 6731
EP - 6739
PB - American Chemical Society
CY - Washington, DC
AN - OPUS4-51147
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zorn, R.
A1 - Szymoniak, Paulina
A1 - Kolmangadi, Mohamed Aejaz
A1 - Malpass-Evans, R.
A1 - McKeown, N.
A1 - Tyagi, M.
A1 - Böhning, Martin
A1 - Schönhals, Andreas
T1 - Low frequency vibrations and diffusion in disordered polymers bearing an intrinsic microporosity as revealed by neutron scattering
JF - Crystals
N2 - The microscopic diffusion and the low frequency density of states (VDOS) of PIM-EATB(CH3) are investigated by inelastic and quasi-elastic neutron scattering where also the demethylated counterpart of PIM-EA-TB(H2) is considered. These intrinsic microporous polymers are characterized by large BET surface area values of several hundred m2/g and pore sizes between 0.5 and 2 nm. Detailed comparison is made to the archetype of polymers of intrinsic microporosity, PIM-1, and polynorbornenes also bearing a microporosity. Due to the wavelength of neutrons, the diffusion and vibrations can be addressed on microscopic length and time scales. From the inelastic neutron scattering experiments the low frequency density of states (VDOS) is estimated which shows excess contributions to the Debye-type VDOS known as Boson peak. It was found that the maximum frequency of the Boson peak decreases with increasing microporosity characterized by the BET surface area. However, besides the BET surface area, additional factors such as the backbone stiffness govern the maximum frequency of the Boson peak. Further the mean squared displacement related to microscopic motions was estimated from elastic fixed window scans. At temperatures above 175 K, the mean squared displacement PIM-EA-TB(CH3) is higher than that for the demethylated counterpart PIM-EA-TB(H2). The additional contribution found for PIM-EATB(CH3) is ascribed to the rotation of the methyl group in this polymer because the only difference between the two structures is that PIM-EA-TB(CH3) has methyl groups where PIM-EA-TB(H2) has none. A detailed comparison of the molecular dynamics is also made to that of PIM-1 and the microporous polynorbornene PTCNSi1. The manuscript focuses on the importance of vibrations and the localized molecular mobility characterized by the microscopic diffusion on the gas Transport in polymeric separation membranes. In the frame of the random gate model localized fluctuations can open or close bottlenecks between pores to enable the diffusion of gas molecules.
KW - Polymer of intrisic microporosity
KW - Neutron scattering
KW - Boson peak
KW - Methyl group rotation
PY - 2021
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-538490
DO - https://doi.org/10.3390/cryst11121482
VL - 11
IS - 12
SP - 1
EP - 16
PB - MDPI
CY - Basel
AN - OPUS4-53849
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zorn, R.
A1 - Szymoniak, Paulina
A1 - Kolmangadi, Mohamed Aejaz
A1 - Wolf, M.
A1 - Alentiev, D.
A1 - Bermeshev, M.
A1 - Böhning, Martin
A1 - Schönhals, Andreas
T1 - Low frequency vibrational density of state of highly permeable super glassy polynorbornenes – The Boson peak
JF - Physical Chemistry Chemical Physics
N2 - Inelastic incoherent neutron time-of flight scattering was employed to measure the low frequency density of states for a series of addition polynorbornenes with bulky side groups. The rigid main chain in combination with the bulky side groups give rise to a microporosity of these polymers in the solid state. The microporosity characterized by the BET surfaces area varies systematically in the considered series. Such materials have some possible application as active separation layer in gas separation membranes.
All investigated materials show excess contributions to the Debye type density of states characteristic for glasses known as Boson peak. The maximum position of the Boson peak shifts to lower frequency values with increasing microporosity. Data for PIM-1 and Matrimid included for comparison are in good agreement to this dependency. This result supports the sound wave interpretation of the Boson peak.
KW - Polynorbornes
KW - Neutron Scattering
PY - 2020
DO - https://doi.org/10.1039/d0cp03360j
SN - 1463-9076
VL - 22
IS - 33
SP - 18381
EP - 18387
PB - Royal Chemical Society
AN - OPUS4-51165
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zorn, R.
A1 - Yin, Huajie
A1 - Lohstroh, W.
A1 - Harrison, W.
A1 - Budd, P.M.
A1 - Pauw, Brian Richard
A1 - Böhning, Martin
A1 - Schönhals, Andreas
T1 - Anomalies in the low frequency vibrational density of states for a polymer with intrinsic microporosity - the Boson peak of PIM-1
JF - Physical Chemistry Chemical Physics
N2 - Polymers with intrinsic microporosity are promising candidates for the active separation layer in gas separation membranes. Here, the vibrational density of states (VDOS) for PIM-1, the prototypical polymer with intrinsic microporosity, is investigated by means of inelastic neutron scattering. The results are compared to data measured for a more conventional high-performance polyimide used in gas separation membranes (Matrimid). The measured data show the characteristic low frequency excess contribution to VDOS above the Debye sound wave level, generally known as the Boson peak in glass-forming materials. In comparison to the Boson peak of Matrimid, that of PIM-1 is shifted to lower frequencies. This shift is discussed considering the microporous, sponge-like structure of PIM-1 as providing a higher compressibility at the molecular scale than for conventional polymers. For an annealed PIM-1 sample, the Boson peak shifts to higher frequencies in comparison to the un-annealed sample. These changes in the VDOS of the annealed PIM-1 sample are related to changes in the microporous structure as confirmed by X-ray scattering.
KW - Polymers
KW - Boson peak
KW - Neutron scattering
KW - Physical aging
KW - Polymer of intrinsic microporosity
PY - 2018
DO - https://doi.org/10.1039/C7CP07141H
SN - 1463-9076
SN - 1463-9084
VL - 20
IS - 3
SP - 1355
EP - 1363
PB - The Royal Society of Chemistry
AN - OPUS4-43808
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zosef, M.
A1 - Fahmy, Alaa
A1 - El Hotaby, W.
A1 - Hassan, A.
A1 - Khalil, A.
A1 - Anis, B.
T1 - High performance graphene-based PVF foam for lead removal from water
JF - Journal of Materials Research and Technology-Jmr&T
N2 - The synthesis and optimization of superior and eco-friendly sorbents for Pb(II) pose a great challenge in the field of water treatment. The sorbent was developed by introducing graphene oxide (GO) into the matrix of polyvinyl formaldehyde (PVF) foam. The immobilization of GO in PVF results in significant increase in the maximum adsorption capacity (Qt) of GO powder for Pb(II), from ≈800 to ≈1730 mg g−1 in the case of GO/PVF foam. As compared with GO powder in Pb(II) aqueous solutions, PVF matrix keeps GO sheets stable without any agglomeration. The large surface area of GO sheet allows the abundant oxygenated functional groups on its surface to participate effectively in the Pb(II) adsorption process, leading to the huge increase of the Qt. Adsorption isotherms and kinetic studies indicated that the sorption process of Pb(II) on GO/PVF was done on heterogenous surface by ion-exchange reaction. The GO/PVF foam showed an excellent reusability for more than 10 cycles with almost the same efficiency and without any significant change in its physical properties.
KW - Water treatment
KW - Graphene oxide
KW - Lead ions
KW - Polyvinyl formaldehyde foam
KW - Superior sorbent
PY - 2020
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-523013
DO - https://doi.org/10.1016/j.jmrt.2020.08.011
VL - 9
IS - 5
SP - 11861
EP - 11875
PB - Elsevier B.V.
AN - OPUS4-52301
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zou, T.
A1 - Nonappa, N.
A1 - Khavani, M.
A1 - Vuorte, M.
A1 - Penttilä, P.
A1 - Zitting, A.
A1 - Valle-Delgado, J. J.
A1 - Elert, Anna Maria
A1 - Silbernagl, Dorothee
A1 - Balakshin, M.
A1 - Sammalkorpi, M.
A1 - Österberg, M.
T1 - Experimental and Simulation Study of the Solvent Effects on the Intrinsic Properties of Spherical Lignin Nanoparticles
JF - The journal of physical chemistry. B
N2 - Spherical lignin nanoparticles (LNPs) fabricated via nanoprecipitation of dissolved lignin are among the most attractive biomass-derived nanomaterials. Despite various studies exploring the methods to improve the uniformity of LNPs or seeking more application opportunities for LNPs, little attention has been given to the fundamental aspects of the solvent effects on the intrinsic properties of LNPs. In this study, we employed a variety of experimental techniques and molecular dynamics (MD) simulations to investigate the solvent effects on the intrinsic properties of LNPs. The LNPs were prepared from softwood Kraft lignin (SKL) using the binary solvents of aqueous acetone or aqueous tetrahydrofuran (THF) via nanoprecipitation. The internal morphology, porosity, and mechanical properties of the LNPs were analyzed with electron tomography (ET), small-angle X-ray scattering (SAXS), atomic force microscopy (AFM), and intermodulation AFM (ImAFM). We found that aqueous acetone resulted in smaller LNPs with higher uniformity compared to aqueous THF, mainly ascribing to stronger solvent−lignin interactions as suggested by MD simulation results and confirmed with aqueous 1,4-dioxane (DXN) and aqueous dimethyl sulfoxide (DMSO).
More importantly, we report that both LNPs were compact particles with relatively homogeneous density distribution and very low porosity in the internal structure. The stiffness of the particles was independent of the size, and the Young’s modulus was in the range of 0.3−4 GPa. Overall, the fundamental understandings of LNPs gained in this study are essential for the design of LNPs with optimal performance in applications.
KW - Lignin
KW - Electron tomography
KW - Intermodulation AFM
KW - Modulus
KW - SAXS
PY - 2021
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-546948
DO - https://doi.org/10.1021/acs.jpcb.1c05319
SN - 1520-5207
VL - 125
IS - 44
SP - 12315
EP - 12328
PB - ACS
AN - OPUS4-54694
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Zubia Aranburu, Judith
A1 - Cappella, Brunero
A1 - Zabala Eguren, A.
A1 - Buruaga Lamarain, L.
A1 - Aginagalde Lopez, A.
A1 - Bonse, Jörn
A1 - Schwibbert, Karin
T1 - Quantification of the adhesion force of E. coli on Ti via single-cell force spectroscopy
T2 - Libro de Actas del XL Congreso Anual de la Sociedad Española de Ingeniería Biomédica
N2 - Antibiotic resistance is a growing global problem which poses a massive threat to human health. Although human activity contributes to the acceleration of the process, bacteria have a self-driven stabilisation mechanism to protect themselves from such and other external threats: biofilm formation. Nonetheless, it is the adhesion of a single bacterial cell to a surface that triggers the formation of such network of biomolecules and microorganisms, as well as its hazardous consequences. The main objective of this work was to quantify the adhesion force of a single E. coli cell on a Ti substrate via the AFM-related single-cell force spectroscopy, with both the cell and the substrate material being of high clinical relevance. A set of 25 x 25 force displacement curves was acquired with a maximum force of 3.2 nN without dwell time, yielding a topography map and an adhesion force map that showed to be correlated. A mean adhesion force of 0.85 ± 0.175 nN was measured and the presence of cell appendages on the bacterial cell wall was verified through individual force-displacement curves. Bacterial viability was assessed after the measurements via live/dead staining.
T2 - XL Congreso Anual de la Sociedad Española de Ingeniería Biomédica CASEIB 2022
CY - Valladolid, Spain
DA - 23.11.2022
KW - Bacteria
KW - Atomic force microscopy
KW - Force distance curve
PY - 2022
SN - 978-84-09-45972-8
SP - 217
EP - 220
AN - OPUS4-57039
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zuffa, Caterina
A1 - Cappuccino, Chiara
A1 - Casali, Lucia
A1 - Emmerling, Franziska
A1 - Maini, Lucia
T1 - Liquid reagents are not enough for liquid assisted grinding in the synthesis of (AgBr)(n-pica) n
JF - Physical Chemistry Chemical Physics
N2 - This study investigates the mechanochemical reactions between AgBr 3-picolylamine and 4-picolylamine. The use of different stoichiometry ratios of the reagents allows [(AgBr)(n-pica)]n and [(AgBr)2(n-pica)]n to be obtained, and we report the new structures of [(AgBr)2(3-pica)]n and [(AgBr)2(4-pica)]n which are characterized by the presence of the following: (a) infinite inorganic chains, (b) silver atom coordinated only by bromide atoms and (c) argentophilic interactions. Furthermore, we studied the interconversion of [(AgBr)(n-pica)]n/[(AgBr)2(n-pica)]n by mechanochemical and thermal properties. The in situ experiments suggest that [(AgBr)(3-pica)]n is kinetically favoured while [(AgBr)2(3-pica)]n is converted into [(AgBr)(3-pica)]n only with a high excess of the ligand. Finally, the liquid nature of the ligands is not sufficient to assist the grinding process, and the complete reaction is observed with the addition of a small quantity of acetonitrile.
KW - Mechanochemistry
KW - Complex
PY - 2024
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-594755
DO - https://doi.org/10.1039/d3cp04791a
SN - 1463-9076
SP - 1
EP - 10
PB - Royal Society of Chemistry (RSC)
AN - OPUS4-59475
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zutta Villate, J. M.
A1 - Hahn, Marc Benjamin
T1 - Radioactive gold nanoparticles for cancer treatment
JF - European physical journal D
N2 - Dose enhancement by gold nanoparticles (AuNP) was shown to increase the biological effectiveness of radiation damage in biomolecules and tissue. Most of the current studies focus on external beam therapy on combination with AuNP. Here we present a Monte-Carlo study (Geant4) to characterise radioactive AuNP. Radioactive 198 Au emits beta and gamma rays and is considered for applications with solid tumours. To effectively apply 198 AuNP their energy deposit characteristics have to be determined in terms of intrinsic and extrinsic properties e.g. AuNP diameter, AuNP density, and their clustering behaviour. After each decay process, the energy deposit, inelastic scattering events, kinetic energy spectrum of secondary particles within the AuNP themselves and in a spherical target volume of water up to 1 μm radius were determined. Simulations were performed for AuNP radii ranging from 2.5 nm to 20 nm radius, different cluster sizes and densities. The results show an increase of the energy deposit in the vicinity of the AuNP up to 150 nm. This effect nearly vanishes for distances up to one micron. For the case of AuNP clusters and the same activity, the enhancement of the energy deposit increases with the relative gold mass percentage and therefore can be adjusted by changing AuNP radius or clustering behaviour.
KW - Gold
KW - Nanoparticle
KW - Cancer
KW - Monte-Carlo
KW - Simulation
KW - Cluster
PY - 2019
DO - https://doi.org/10.1140/epjd/e2019-90707-x
SN - 1434-6060
SN - 1434-6079
VL - 73
IS - 95
SP - 1
EP - 7
PB - Springer
CY - Berlin
AN - OPUS4-47964
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zutta Villate, J. M.
A1 - Viviana Rojas, J.
A1 - Hahn, Marc Benjamin
A1 - Anselmo Puerta, J.
T1 - Synthesis of 198Au nanoparticles sub 10 nm due optimization on local dose by Monte Carlo simulations for cancer treatment
JF - Journal of Radioanalytical and Nuclear Chemistry
N2 - To enhance the biological effects of radiation damage in cancerous cells, we present an alternative approach to the use of gold nanoparticles (AuNP), focusing on the synthesis and characterization of highly monodisperse, spherical radioactive gold nanoparticles 198AuNP. The size of the AuNP size was optimized with the help of Geant4/TOPAS particle scattering simulations, and energy deposition per nm3 per decay for varying radii (2–10 nm) was evaluated. This work is the foundation for ongoing experimental work to evaluate cell death induced by 198AuNP which aims for the use of radioactive gold nanoparticles in cancer treatment.
KW - AuNP
KW - Beta decay
KW - Beta particle
KW - Brachytherapy
KW - Cancer treatment
KW - Nanoparticles
KW - Nanoparticle
KW - DNA
KW - DNA damage
KW - Dosimetry
KW - Energy deposit
KW - Gamma ray
KW - Geant4
KW - Geant4-DNA
KW - Gold Nanoparticles
KW - LEE
KW - Low energy electrons
KW - MCS
KW - Microdosimetry
KW - Monte-Carlo simulation
KW - NP
KW - Synthesis
KW - TEM
KW - OH radicals
KW - Particle scattering
KW - Radiation damage
KW - Radiationtherapy
KW - Radioactive decay
KW - Radiolysis
KW - Simulation
KW - TOPAS
KW - TOPAS-nbio
PY - 2022
DO - https://doi.org/10.1007/s10967-022-08355-5
SN - 1588-2780
SP - 1
EP - 9
PB - Springer Nature
AN - OPUS4-55132
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zvereva, V.V.
A1 - Asanov, I.P.
A1 - Yusenko, Kirill
A1 - Zadesenec, A.V.
A1 - Plyusnin, P.E.
A1 - Gerasimov, E.Yu.
A1 - Maksimovskiy, E.A.
A1 - Korenev, S.V.
A1 - Asanova, T.I.
T1 - Local atomic and electronic structure of Pt‑Os nanoplates and nanofbers derived from the single‑source precursor (NH4)2[Pt0.5Os0.5Cl6]
JF - Research Paper
N2 - Abstract Nowadays, Pt-Os binary systems are mainly considered as catalysts and electrocatalysts, but the role of Os in these processes is still poorly understood. The electronic structure of Pt-Os nanosystems remains a few studied as well. Using bimetallic (NH4)2[Pt0.5Os0.5Cl6] as a single-source precursor for preparing Pt-Os nanoalloy through the thermal decomposition in hydrogen and inert atmospheres, the relation of morphology, atomic ordering, and electronic structure of Pt-Os nanoalloy was examined by in situ Quick XAFS, XPS, PXRD, SEM, and HRTEM techniques. Being the only variable parameter, the decomposition atmosphere was found to govern the morphology of the Pt-Os nanoalloy and change the atomic ordering (alloying extent), which involves a change in the electronic structure. In a hydrogen atmosphere, the nanofibers (NFs) (ø ~ 5–6 nm) with the atomic ordering Oscore&Pt-richshell were observed to form; in a nitrogen atmosphere, thin nanoplates (NPLs) (~ 12 nm) with the atomic architecture Os-richcore&Ptrichshell were found out. The depletion in the Os 5d5/2 and Pt 5d5/2,3/2 states was revealed for Pt-Os nanoalloys.
This unusual result disagrees with the known d-band theory and indicates that there is a gain of non-d conduction electron counts at one or both sites. Mixed conductivity may exist in such Pt-Os nanoalloy that may be responsible for a manifestation of new physical properties of this binary system .
KW - Bimetallic alloy
KW - Nanoalloy
KW - Synchrotron radiation
KW - XAFS
KW - Electronic structure
KW - Alloy morphology
PY - 2021
DO - https://doi.org/10.1007/s11051-021-05378-z
SN - 1388-0764
VL - 24
IS - 1
SP - 1
EP - 23
PB - Springer
AN - OPUS4-55347
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zänker, Steffen
A1 - Scholz, G.
A1 - Heise, M.
A1 - Kemnitz, E.
A1 - Emmerling, Franziska
T1 - New 2D layered structures with direct fluorine-metal bonds: MF(CH3COO) (M: Sr, Ba, Pb)
JF - CrystEngComm
N2 - New coordination polymers with 2D network structures with fluorine directly coordinated to the metal ion were prepared both via mechanochemical synthesis and fluorolytic sol–gel synthesis. Depending on the synthesis route, the samples show different particle sizes, according to SEM imaging. The crystal structures of barium acetate fluoride, strontium acetate fluoride, and lead acetate fluoride (BaFIJCH3COO), SrFIJCH3COO) and PbFIJCH3COO)) were solved from X-ray powder diffraction data. The structure solution is backed by the results from 19F MAS NMR, FT IR data, and thermal analysis. The calculated chemical shifts of the 19F MAS NMR spectra coincide well with the measured ones. It turns out that the grinding conditions have a remarkable influence on the mechanochemical synthesis and its products. Our systematic study also indicates a strong influence of the atomic radii of Ca, Sr, Ba, and Pb on the success of the syntheses.
KW - Mechanochemistry
KW - Coordination polymers
PY - 2020
DO - https://doi.org/10.1039/d0ce00287a
VL - 22
IS - 16
SP - 2772
EP - 2780
PB - Royal Society of Chemistry
AN - OPUS4-50789
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zänker, Steffen
A1 - Scholz, G.
A1 - Marquardt, Julien
A1 - Emmerling, Franziska
T1 - Structural changes in Ba-compounds of different hardness induced by high-energy ball milling – evidenced by 137Ba NMR and X-ray powder diffraction
JF - Zeitschrift für anorganische und allgemeine Chemie
N2 - Changes in the global bulk and local structures, of three different barium compounds (BaZrO3, BaF2, and BaFCl),were induced by mechanical milling and followed using X-ray powder diffraction (PXRD), subsequent microstructure analysis, and 137Ba solid state NMR spectroscopy. Harder materials like BaZrO3 experience significantly higher structural changes upon milling than softer materials like BaF2. Moreover, soft materials with layered structures, like BaFCl, show a pronounced structural change during the milling process. By combining PXRD and solid state NMR, detailed information on the changes to the global and local structures were obtained, which are of interest for mechanochemical synthesis, mechanically treated catalysts or ionic conductors.
KW - Mechanochemistry
KW - X-ray diffraction
KW - Solid state NMR
PY - 2022
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-547397
DO - https://doi.org/10.1002/zaac.202200026
SN - 0044-2313
VL - 648
IS - 10
SP - 1
EP - 8
PB - Wiley-VCH
CY - Weinheim
AN - OPUS4-54739
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zänker, Steffen
A1 - Scholz, G.
A1 - Xu, W.
A1 - Kemnitz, E.
A1 - Emmerling, Franziska
T1 - Structure and properties of fluorinated and non-fluorinated Ba-coordination polymers - the position of fluorine makes the difference
JF - Journal of Inorganic and General Chemistry
N2 - As the most electronegative element, fluorine has a strong influence on material properties such as absorption behaviour or chemical and thermal stability. Fluorine can be easily integrated into coordination polymers (CPs) via a fluorinated acetate, here trifluoroacetate in Ba(CF3COO)2, or directly via a metal fluorine bond (BaF(CH3COO)). In the present study both possibilities of fluorine integration were tested and their effect on structure and properties of barium coordination polymers was investigated in comparison with the non-fluorinated barium acetate (Ba(CH3COO)2). In addition to the study of their thermal behaviour and their decomposition temperature, the CPs structures were tested for their application as possible anode materials in lithium ion batteries and for their sorption of water and ammonia. The properties of the CPs can be traced back to the individual structural motifs and could thus trigger new design ideas for CPs in LIBs and/or catalysis.
KW - Alkaline earth metal coordination polymers
KW - Lithium-ion battery
KW - Water stability
KW - Fluorine coordination
PY - 2020
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-524041
DO - https://doi.org/10.1002/zaac.202000360
SN - 0044-2313
VL - 647
IS - 9
SP - 1014
EP - 1024
PB - Wiley-VCH GmbH
AN - OPUS4-52404
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Zänker, Steffen
A1 - Scholz, Gudrun
A1 - Krahl, Thoralf
A1 - Prinz, Carsten
A1 - Emmerling, Franziska
A1 - Kemnitz, E.
T1 - Luminescent properties of Eu3+/Tb3+ doped fluorine containing coordination polymers
JF - Solid State Sciences
N2 - Lanthanides doped coordination polymers (CPs) with different binding motifs were synthesized to investigate the influence of the different fluorine positions in the structure on the decay time τ of the excited states. Fluorine can be integrated into the network mechanochemically via a fluorinated organic linker, here barium tetrafluoroterephthalate Ba(p-BDC-F4)2 or directly via a metal-fluorine bond (barium terephthalate fluoride BaF(p-BDC)0.5). The CP with a metal-fluorine bond shows the highest lifetime of the excited states of lanthanides (Eu3+, Tb3+ or Eu3+& Tb3+). The excitation of the lanthanides can be performed directly via the excitation wavelength typical for lanthanides and via the excitation wavelength of the linker. This enabled the simultaneous excitation of Eu3+ and Tb3+ in one CP. In the emission spectra (λem = 393 nm) of the mixed doped CPs (Eu3+ and Tb3+) the bands of both lanthanides can be observed. The integration into the crystal lattice and the homogeneous distribution of the lanthanides in the CPs is shown by X-ray diffraction, TEM, STEM-EDS measurements and the long decay times.
KW - Alkaline earth metal coordination polymers
KW - Fluorine coordination polymers
KW - Lanthanides doped coordination polymers
KW - Luminescence
PY - 2021
DO - https://doi.org/10.1016/j.solidstatesciences.2021.106614
VL - 117
SP - 106614
PB - Elsevier Masson SAS
AN - OPUS4-52559
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Ávila Calderón, Luis Alexander
A1 - Hammerschmidt, T.
A1 - Gedsun, A.
A1 - Forti, M.
A1 - Olbricht, Jürgen
A1 - Stotzka, R.
A1 - Skrotzki, Birgit
A1 - Shakeel, Y.
A1 - Hunke, S.
A1 - Tsybenko, H.
A1 - Aversa, R.
A1 - Chmielowski, M.
A1 - Hickel, T.
T1 - IUC02 Framework for Curation and Distribution of Reference Datasets using Creep Data of Ni-Base Superalloys as an Example
N2 - In our current view, reference datasets in the MSE domain represent specific material properties, e.g., structural, mechanical, … characteristics. A reference dataset must fulfill high-quality standards, not only in precision of measurement but also in a comprehensive documentation of material, processing, and testing history (metadata). This Infrastructure Use Case (IUC) aims to develop a framework for generating reference material datasets using creep data of a single crystal Ni-based superalloy as a best practice example. In a community-driven process, we aim to encourage the discussion and establish a framework for the creation and distribution of reference material datasets. In this poster presentation, we highlight our current vision and activities and intend to stimulate the discussion about the topic reference datasets and future collaborations and work.
T2 - NFDI-MatWerk Conference
CY - Siegburg, Germany
DA - 27.06.2023
KW - Referenzdaten
KW - Reference data
KW - Syngle Crystal alloy
KW - Creep
KW - Metadata schema
PY - 2023
AN - OPUS4-57923
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Ávila Calderón, Luis Alexander
A1 - Hammerschmidt, T.
A1 - Stotzka, R.
A1 - Forti, M.
A1 - Olbricht, Jürgen
A1 - Skrotzki, Birgit
A1 - Lenze, A.
A1 - Gedsun, A.
A1 - Hickel, Tilmann
A1 - Tsybenko, H.
A1 - Chmielowski, M.
A1 - Hunke, S.
A1 - Shakeel, Y.
T1 - Demonstration of the Infrastructure Use Case 02: Framework for curation and distribution of reference datasets
N2 - In our current view, reference datasets in the MSE domain represent specific material properties, e.g., structural, mechanical, … characteristics. A reference dataset must fulfill high-quality standards, not only in precision of measurement but also in a comprehensive documentation of material, processing, and testing history (metadata). This Infrastructure Use Case (IUC) aims to develop a framework for generating reference material datasets using creep data of a single crystal Ni-based superalloy as a best practice example. In a community-driven process, we aim to encourage the discussion and establish a framework for the creation and distribution of reference material datasets. In this poster presentation, we highlight our current vision and activities and intend to stimulate the discussion about the topic reference datasets and future collaborations and work.
T2 - NFDI-MatWerk Conference
CY - Siegburg, Germany
DA - 27.06.2023
KW - Referenzdaten
KW - Reference data
KW - Creep
KW - Metadata schema
KW - Syngle Crystal alloy
PY - 2023
AN - OPUS4-57924
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Özcan Sandikcioglu, Özlem
A1 - Wurzler, Nina
A1 - Hampel, Marco
A1 - Witt, Julia
A1 - Schenderlein, Matthias
T1 - In situ imaging of corrosion processes
N2 - The presentation summarizes our recent results on the coupled electrochemical methods for high resolution corrosion studies. The combination of Scanning Electrochemical Microscopy (SECM) and multielectrode (MMA) based real-time corrosion monitoring was presented as a new method for achieving high time resolution in local electrochemical analysis. Correlative imaging by means of Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM) was demonstrated as a tool for the investigation of local corrosion processes initiated by the intermetallic particles (IMPs) on AA2024-T3 aluminium alloy.
T2 - BAM-IfW Workshop
CY - Dresden, Germany
DA - 28.03.2019
KW - MIC
KW - Atomic Force Microscopy (AFM)
KW - Corrosion monitoring
KW - Corrosion
PY - 2019
AN - OPUS4-50291
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Özcan Sandikcioglu, Özlem
A1 - Wurzler, Nina
A1 - Hampel, Marco
A1 - Sobol, Oded
A1 - Schütter, Jan David
T1 - Effekt der Vorkonditionierung und Umweltparameter auf die Anheftung und Biofilmbildung
N2 - Aktuelle Ergebnisse des Fachbereiches auf dem Gebiet MIC.
T2 - Treffen der GfKORR/DECHEMA Fachgruppe MikroMatz
CY - Berlin, Germany
DA - 09.04.2019
KW - MIC
KW - Korrosion
KW - Korrosionsüberwachung
KW - Biofilmbildung
PY - 2019
AN - OPUS4-50292
LA - deu
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Özcan Sandikcioglu, Özlem
A1 - Witt, Julia
A1 - Almalla, Ahed
T1 - Application of atomic force microscopy (AFM) for in situ corrosion studies of thin film covered AA2024 T3 aluminium alloy surface
N2 - The performance of functional coatings and adhesively joined hybrid components relies strongly on the stability of the polymer-metal interface. With the increasing utilization of multi-material structures in the automotive and aerospace industry, it is of great scientific and technical interest to understand the processes leading to interface degradation and to develop novel strategies to increase corrosion and delamination resistance.
The aim of this project is to develop thin epoxy-based films and their carbon nanofiller loaded composites on aluminium alloy AA2024-T3 as a model system and to investigate their interfacial stability under corrosive and coupled corrosive-mechanical load. Spin coating was used for the layer-by-layer deposition of poly[(o-cresyl glycidyl ether)-co-formaldehyde] and poly-(ethylenimine) bi-layers. Atomic force microscopy (AFM) results indicate a very homogeneous and dense film with low surface roughness. Carbon nanofillers were introduced either by mixing into the coating components or in between individual layers to control the separation between the carbon nanofillers and alloy surface. The film chemistry and barrier properties were characterized by means of spectroscopic and electrochemical methods, respectively. The degradation and delamination behavior of the epoxy-based films was characterized by means of in situ AFM corrosion experiments. The quantitative imaging (QI) mode allowed the observation of hydrogen-generation induced blister formation during exposure to corrosive electrolyte and how the local corrosion processes evolved with exposure time. Complementary energy dispersive X-ray spectroscopy (EDX) analysis was performed to correlate the corrosion behavior with the different intermetallic particle chemistries and distributions. The presentation will summarize our results on the effect of interface chemistry and carbon nanofiller – alloy separation on the initiation of local corrosion processes on thin film covered AA2024-T3 aluminium alloys.
T2 - EuroCorr2019
CY - Sevilla, Spain
DA - 09.09.2019
KW - Corrosion
KW - Atomic Force Microscopy (AFM)
PY - 2019
AN - OPUS4-50293
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Özcan Sandikcioglu, Özlem
A1 - Witt, Julia
A1 - Fernandes Jamar, Marina
A1 - Stepien, Daniel
T1 - In situ atomic force microscopy (AFM) analysis of materials under combined corrosive and mechanical load
N2 - In service, most materials are operated under simultaneous corrosive and mechanical load and there are very few methods capable for testing material degradation under these conditions, especially when it comes to high resolution analysis. For this purpose, in this work, a tensile module capable of uniaxial stretching and compression with up to 5 kN force was integrated into an AFM stage. The elimination of the need for sample unmounting and remounting and the resulting possibility of keeping the sample under constant mechanical load during AFM measurements not only enables a precise positioning of the area of interest but also allows for the analysis of processes in the elastic deformation regime.
This methodology was demonstrated for two case studies. Scanning Kelvin Probe Force Microscopy (SKPFM) was used as the main tool to characterize the deformation behavior. Moreover, a flexible electrochemical measurement cell was used to enable electrochemical analysis by means of electrochemical impedance spectroscopy (EIS) and Linear Sweep Voltammetry (LSV) during AFM measurements at different levels of strain. The in situ AFM results are complemented by microstructure analysis by means of electron backscatter diffraction (EBSD).
In the first case study, the deformation induced delamination of a thin organic coating on AA2024 T3 aluminium alloy was investigated as a function of alloy surface treatment. The formation of cracks in the insulating passive film enabled an early detection of deformation processes by means of SKPFM. The second case study focused on the comparison of corrosion and deformation behavior of conventional and additively manufactured 316 stainless steels. In comparison to the conventional 316 stainless steel, the effect of processing was clearly detectable on the additively manufactured material as zones of inhomogeneous potential, which also affected the initiation of local corrosion processes. The contribution will provide detailed information on the new AFM setup and summarize our results from both case studies.
T2 - EuroCorr2019
CY - Sevilla, Spain
DA - 09.09.2019
KW - Corrosion
KW - Coupled corrosive and mechanial load
KW - Atomic Force Microscopy (AFM)
PY - 2019
AN - OPUS4-50294
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Özcan Sandikcioglu, Özlem
A1 - Witt, Julia
A1 - Schenderlein, Matthias
A1 - Hampel, Marco
A1 - Almalla, Ahed
T1 - Coupled electrochemical, microscopic and spectroscopic techniques for the analysis of local corrosion and mic processes
N2 - Summary of the research topics of the division 6.2 and recent results
T2 - HZDR-IRE Institutscolloquium
CY - Dresden, Germany
DA - 24.09.2019
KW - MIC
KW - Localised corrosion
KW - Corrosion monitoring
KW - Biofilmbildung
KW - Atomic Force Microscopy (AFM)
PY - 2019
AN - OPUS4-50295
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Özcan Sandikcioglu, Özlem
A1 - Witt, Julia
A1 - Almalla, Ahed
A1 - Fernandes Jamar, Marina
A1 - Stepien, Daniel
T1 - Untersuchung lokaler Korrosionsprozesse mittels kombinierter elektrochemischer und mikroskopischer Methoden
N2 - Aktuelle Forschungsergebnisse - Korrosionseigenschaften von AA 2024-T3 und AM-316 unter gekoppelter korrosiv/mechanischer Beanspruchung.
T2 - MPIE Düsseldorf, Sitzung der GfKORR Arbeitskreise Grundlagen und Simulation und Korrosionsuntersuchung und überwachung
CY - Dusseldorf, Germany
DA - 20.11.2019
KW - Corrosion
KW - Atomic Force Microscopy (AFM)
KW - Coupled corrosive/mechanical load
PY - 2019
AN - OPUS4-50296
LA - deu
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Özcan Sandikcioglu, Özlem
A1 - Witt, Julia
A1 - Schenderlein, Matthias
A1 - Hampel, Marco
A1 - Almalla, Ahed
T1 - Untersuchung lokaler Korrosionsprozesse mittels kombinierter elektrochemischer und mikroskopischer Methoden
N2 - Forschungsarbeiten des Fachbereichs auf dem Gebiet "Methoden für die Analyse der lokalen Korrosionsprozesse".
T2 - ProcessNet-Arbeitsausschuss Elektrochemische Prozesse (AA ECP)
CY - DECHEMA, Frankfurt am Main, Germany
DA - 21.01.2019
KW - Scanning electrochemical microscope (SECM)
KW - Atomic Force Microscopy (AFM)
KW - Multielectrode based sensors
PY - 2019
AN - OPUS4-49751
LA - deu
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Özcan Sandikcioglu, Özlem
A1 - Wurzler, Nina
A1 - Witt, Julia
A1 - Dimper, Matthias
A1 - Wagner, R.
A1 - Lützenkirchen-Hecht, D.
T1 - Changes in passive film chemistry of stainless steels in the presence of iron reducing bacteria
N2 - Summary of the results obtained at DELTA-Beamline 8 in 2018.
T2 - DELTA User Treffen
CY - Dortmund, Germany
DA - 28.11.2018
KW - MIC
KW - Corrosion
KW - XANES
PY - 2018
AN - OPUS4-50312
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
A1 - Özcan Sandikcioglu, Özlem
A1 - Wurzler, Nina
A1 - Hampel, Marco
A1 - Witt, Julia
A1 - Schenderlein, Matthias
T1 - Combined electrochemical techniques for the investigation of corrosion processes
N2 - Short presentation of BAM, a summary of the methods available in FB 6.2 and recent results on MIC and high resolution corrosion studies
T2 - Institute Seminar: Jerzy Haber Institute of Catalysis and Surface Chemistry
CY - Cracow, Poland
DA - 07.11.2018
KW - MIC
KW - Corrosion
KW - Atomic Force Microscopy (AFM)
KW - Combined corrosive and mechanical load
PY - 2018
AN - OPUS4-50313
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
ED - Stawski, Tomasz
ED - Van Driessche, A. E. S.
T1 - Special issue "Formation of sulfate minerals in natural and industrial environments"
T2 - Minerals
N2 - Sulfate is abundant in the environment and, as a result, sulfate-containing minerals constitute a large and important focus of research. These minerals play an important role in many geochemical and industrial processes, including the sulfur cycle, the construction industry (e.g., plaster of Paris), fault tectonics, acid mine drainage, and even rare biominerals. Important to note are the abundant amounts of sulfate (minerals) located on the surface of Mars, and in meteorites, extending the relevance of this mineral group beyond the realm of our planet. In geological systems, sulfate minerals such as barite are also important for indicating certain sedimentation environments. In this regard, sulfate deposits can be used to evaluate the redox state of ancient oceans during early Earth time periods.
KW - Calcium sulfate
KW - Sulfates
PY - 2020
UR - https://www.mdpi.com/journal/minerals/special_issues/FSMNIE
SN - 2075-163X
VL - 10(9)-12(3)
SP - 10-812-1
EP - 12-299-3
PB - MDPI
CY - Basel
AN - OPUS4-54700
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - CONF
ED - Hahn, Oliver
ED - Doil, Thorsten
T1 - Workshop Kulturguterhaltung - Vom Dampfkessel zu Nanomaterialien
T2 - N.i.Ke. Schriftenreihe des Netzwerks zur interdisziplinären Kulturguterhaltung in Deutschland
N2 - Sehr geehrte Damen und Herren,
liebe Leserinnen und Leser,
bereits im ersten Band der N.i.Ke. Schriftenreihe des Netzwerks zur interdisziplinären Kulturerhaltung hatte ich angeführt, dass bei der Untersuchung von kulturellen Artefakten naturwissenschaftliche Untersuchungsmethoden zunehmend an Bedeutung gewinnen, sie eigentlich unverzichtbar geworden sind.
Ein besonders einprägsames Beispiel dieser fächerübergreifenden Zusammenarbeit zwischen Geisteswissenschaften, Naturwissenschaften und Restaurierungswissenschaften war die Ausstellung Johannes Vermeer. Vom Innehalten, die in diesem Jahr in der Gemäldegalerie Alter Meister in den staatlichen Kunstsammlungen Dresden gezeigt wurde. Eigens für diese Ausstellung wurde das Gemälde Brieflesendes Mädchen am offenen Fenster einer grundlegenden Restaurierung unterzogen. Diese Restaurierung diente jedoch nicht nur der Reparatur des Bildes. Um sich dem ursprünglichen Zustand des Gemäldes zwischen 1657 und 1659 anzunähern, wurden später hinzugefügte Malschichten großflächig abgenommen. Möglich wurde dies durch unterschiedliche, bildgebende materialwissenschaftliche Untersuchungen im Vorfeld, welche die wissenschaftlichen Grundlagen für die Diskussion über den weiteren Umgang mit der Lesenden schufen.
Materialanalytische Verfahren wurden und werden ständig weiterentwickelt und optimiert. Sei es, um aus einer Vielzahl von Einzelmessungen ein Gesamtbild zu erstellen, oder die Größe einer Probenentnahme so zu reduzieren, dass von einer „minimal-invasiven“ oder „quasi nicht-invasiven“ Untersuchung ausgegangen werden kann. Nun feiert die Bundesanstalt für Materialforschung und -prüfung, zusammen mit ihren Vorgängerinstitutionen, den königlichen Versuchsanstalten, in diesem Jahr ihren einhundertfünfzigsten Geburtstag. Sie blickt damit auf eine lange Tradition materialwissenschaftlicher Analysen zurück, an deren Beginn beispielsweise die metallographischen Untersuchungen von Adolf Martens stehen. Derartige Untersuchungen bilden auch heute noch einen wesentlichen Bestandteil archäometallurgischer Forschung. Die Historie bzw. die Weiterentwicklung der Methodik lässt sich hier besonders gut nachzeichnen. Jedoch blicken auch Verfahren zur Charakterisierung weiterer Werkstoffe, wie Glas, Keramik, oder organischer Materialien auf eine lange Geschichte zurück.
Die in diesem Band der N.i.Ke.-Schriftenreihe präsentierten Beiträge dokumentieren einerseits aktuelle Forschungsarbeiten, die erst in diesem Jahr in entsprechenden Fachjournalen publiziert wurden, andererseits liegen einige der Arbeiten bereits 50 Jahre zurück. Sie bekunden damit nicht nur die materialtechnologische und historische Bandbreite der Projekte, sondern offenbaren die Vielfältigkeit kulturhistorischer oder restauratorischer Fragestellungen, zu deren Beantwortung natur- und materialwissenschaftliche Forschung wesentliche Beiträge liefern können.
Ich bedanke mich bei allen Kolleginnen und Kollegen, die zur Erstellung dieser dritten Ausgabe der N.i.Ke. Schriftenreihe des Netzwerks zur interdisziplinären Kulturerhaltung beigetragen haben. Ihre Aufsätze ermöglichen den Blick in die Vielfältigkeit materialwissenschaftlicher Untersuchungen im Bereich Kunst- und Kulturgut. Ich wünsche Ihnen viel Spaß auf dieser kleinen Zeitreise.
T2 - Workshop Kulturguterhaltung - Vom Dampfkessel zu Nanomaterialien
CY - Berlin, Germany
DA - 17.11.2021
KW - Pergamonmuseums
KW - Schriftrollen vom Toten Meer
KW - Gold mit Synchrotronstrahlung
KW - Kandelaber des Ensembles am Charlottenburger Tor
KW - Berliner Tuffsteinfassaden
KW - Betondickglasfenster des Glockenturms am Eiermannbau
KW - Kaiser-Wilhelm-Gedächtniskirche
KW - Radiografische Untersuchung
PY - 2021
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-543239
UR - https://netzwerke.bam.de/Netzwerke/Navigation/DE/Netzwerke/NIKE/nike.html
VL - 3
SP - 1
EP - 155
PB - Druckerei G. Bohm
CY - Berlin
AN - OPUS4-54323
LA - deu
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
ED - Simon, P.
ED - Ihlemann, J.
ED - Bonse, Jörn
T1 - Special issue "Laser-generated periodic nanostructures"
T2 - Nanomaterials
N2 - The study of laser-fabricated periodic nanostructures is one of the leading topics of today’s photonics research. Such structures on the surface of metals, semiconductors, dielectrics, or polymers can generate new material properties with special functionalities. Depending on the specific material parameters and the morphology of the structures, new devices such as microlasers, optical nanoswitches, optical storage devices, sensors or antifraud features can be realized. Furthermore, laser-generated surface textures can be used to improve the tribological properties of surfaces in contact and in relative motion—to reduce friction losses or wear, to modify the wettability or the cell and biofilm growth properties of surfaces through bioinspired laser engineering, for emerging medical applications, or as decoration elements for the refinement of precious goods.
This Special Issue “Laser-Generated Periodic Nanostructures” focuses on the latest experimental and theoretical developments and practical applications of laser-generated periodic structures that can be generated in a “self-organized” way (laser-induced periodic surface structures, LIPSS, ripples) or via laser interference-based direct ablation (often referred to as direct laser interference patterning, DLIP). We aimed to attract both academic and industrial researchers in order to collate the current knowledge of nanomaterials and to present new ideas for future applications and new technologies. By 8 August 2021, 22 scientific articles have been published in the Special Issue.
KW - Laser-induced periodic surface structures (LIPSS)
KW - Direct laser-interference patterning (DLIP)
KW - Surface functionalization
KW - Laser processing
KW - Applications
PY - 2021
UR - https://www.mdpi.com/journal/nanomaterials/special_issues/laser-generated_periodic
SN - 2079-4991
VL - 10(1)-11(8)
SP - 147-1
EP - 2054-7
PB - MDPI
CY - Basel
AN - OPUS4-53099
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - GEN
ED - Simon, P.
ED - Ihlemann, J.
ED - Bonse, Jörn
T1 - Laser-generated periodic nanostructures
T2 - MDPI books
N2 - This book is a reprint collection of articles from the Special Issue published online in the open access journal Nanomaterials.
KW - Laser-induced periodic surface structures (LIPSS)
KW - Direct laser-interference patterning (DLIP)
KW - Applications
KW - Numerical simulations
PY - 2021
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-535146
UR - https://www.mdpi.com/books/pdfview/book/4426
SN - 978-3-0365-2027-8
SN - 978-3-0365-2028-5
DO - https://doi.org/10.3390/books978-3-0365-2028-5
SP - 1
EP - 328
PB - MDPI
CY - Basel
AN - OPUS4-53514
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
ED - Schmidt-Grund, R.
ED - Sturm, C.
ED - Hertwig, Andreas
T1 - Topical issue: Ellipsometry
T2 - Advanced optical technologies
N2 - Ellipsometry is a matured experimental method, whose roots reach back into the early phase of modern optics itself. It is often attributed to be invented by Paul Drude in the last decade of the 19th century, but similar techniques had already been applied for years before Drude started his work. With this Special Issue about ellipsometry and related techniques, we hope to bring more attention to this method and advance and propagate it to be used by a broader community.
KW - Spectroscopy
KW - Ellipsometry
KW - Surfaces
KW - Thin films
KW - Advanced optics
KW - Optical measurement technology
PY - 2022
UR - https://www.degruyter.com/journal/key/aot/11/3-4/html#contents
SN - 2192-8584
SN - 2192-8576
VL - 11
IS - 3-4
SP - 47
EP - 147
PB - De Gruyter
CY - Berlin
AN - OPUS4-55468
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
ED - Pfeffer, M.
ED - Bonse, Jörn
ED - Lasagni, A. F.
T1 - Topical issue: Laser micro- and nano-material processing - Part 2
T2 - Advanced optical technologies
N2 - This special issue of Advanced Optical Technologies (AOT) is dedicated to the field of laser-based micro- and nanostructuring methods.
KW - Applications
KW - Laser processing
KW - Microstructures
KW - Nanostructures
PY - 2020
UR - https://www.degruyter.com/view/journals/aot/9/3/aot.9.issue-3.xml
SN - 2193-8576
SN - 2193-8584
VL - 9
IS - 3
SP - 111
EP - 153
PB - De Gruyter
CY - Berlin
AN - OPUS4-50997
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
ED - Bonse, Jörn
ED - Spaltmann, Dirk
T1 - Special issue: Laser-induced periodic surface nano- and microstructures for tribological applications
T2 - Lubricants
N2 - Laser material processing is an emerging technology that generates surface functionalities on the basis of optical, mechanical, or chemical properties. In the form of laser surface texturing (LST), it has attracted a remarkable amount of research to tailor surface properties towards various tribological applications. The main advantages of this single-step, laser-based technology are the contactless machining, featuring a high flexibility, efficiency, and speed, along with the excellent quality of the processed products. LST can be applied precisely localized to sub-micrometric areas, but, via laser beam scanning, it is also feasible for structuring large surface areas at the square meter size.
This Special Issue focuses on the latest developments concerning the tribological performance of laser-generated periodic surface nano- and microstructures and their applications. This includes the laser-based processing of different surface patterns, such as “self-organized” laser-induced periodic surface structures (LIPSS, ripples), grooves, micro-spikes, hierarchical hybrid nano-/micro-structures, microfeatures generated by direct laser interference patterning (DLIP), or even dimples or other topographic geometries shaped by direct laser modification or ablation. The applications of these periodically nano- and micro-patterned surfaces may improve the lubricated or non-lubricated tribological performance of surfaces in conformal and even non-conformal contact through a reduction of wear, a variation of the coefficient of friction, altered load carrying capacity, etc., resulting in energy saving, improved reliability, increased lifetimes as well as durability, leading in turn to extended maintenance intervals/reduced down-time. This can be beneficial in terms of bearings, gears, engines, seals, cutting tools, or other tribological components. Fundamental aspects addressed may involve the investigation of the relevant physical and chemical effects accompanying the laser-generated nano- and microscale topographies, such as alterations of the material structures, the hardness, superficial oxidation, the role of additives contained in lubricants, surface wettability, micro-hydrodynamic effects, etc.
For this Special Issue we aim to attract both academic and industrial researchers and would like to provide a bridge between research in the fields of tribology and laser material processing in order to foster the current knowledge and present new ideas for future applications and new technologies.
KW - Applications
KW - Friction
KW - Laser-induced periodic surface structures (LIPSS)
KW - Tribology
KW - Wear
PY - 2020
UR - https://www.mdpi.com/journal/lubricants/special_issues/laser_periodic
SN - 2075-4442
VL - 8
IS - 3
SP - Article 1
EP - Article 10
PB - MDPI
CY - Basel
AN - OPUS4-50914
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
ED - Pfeffer, M.
ED - Bonse, Jörn
ED - Lasagni, A. F.
T1 - Topical issue: Laser micro- and nano-material processing - Part 1
T2 - Advanced optical technologies
N2 - This special issue of Advanced Optical Technologies (AOT) is dedicated to the field of laser-based micro- and nanostructuring methods.
KW - Laser processing
KW - Microstructures
KW - Nanostructures
KW - Applications
PY - 2020
UR - https://www.degruyter.com/view/journals/aot/9/1-2/aot.9.issue-1-2.xml
SN - 2193-8576
SN - 2193-8584
VL - 9
IS - 1-2
SP - 7
EP - 110
PB - De Gruyter
CY - Berlin
AN - OPUS4-50798
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - GEN
ED - Hodoroaba, Vasile-Dan
ED - Unger, Wolfgang
ED - Shard, A. G.
T1 - Characterization of nanoparticles - Measurement processes for nanoparticles
N2 - Characterization of Nanoparticles: Measurement Processes for Nanoparticles surveys this fast growing field, including established methods for the physical and chemical characterization of nanoparticles. The book focuses on sample preparation issues (including potential pitfalls), with measurement procedures described in detail. In addition, the book explores data reduction, including the quantitative evaluation of the final result and its uncertainty of measurement. The results of published inter-laboratory comparisons are referred to, along with the availability of reference materials necessary for instrument calibration and method validation. The application of these methods are illustrated with practical examples on what is routine and what remains a challenge.
In addition, this book summarizes promising methods still under development and analyzes the need for complementary methods to enhance the quality of nanoparticle characterization with solutions already in operation.
KW - Nanoparticles
KW - Characterization method
KW - Sample preparation
KW - Inter-laboratory comparison
KW - Standardisation
KW - Measurement uncertainty
KW - Case studies
PY - 2020
SN - 978-0-12-814182-3
DO - https://doi.org/10.1016/C2017-0-00312-9
SP - 1
EP - 566
PB - Elsevier
CY - Amsterdam
AN - OPUS4-50284
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - GEN
ED - Bonse, Jörn
ED - Spaltmann, Dirk
T1 - Laser-induced periodic surface nano- and microstructures for tribological applications
N2 - This book is a reprint collection of articles from the Special Issue published online in the open access journal Lubricants.
KW - Laser-induced periodic surface structures (LIPSS)
KW - Friction
KW - Wear
KW - Applications
PY - 2020
UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-516611
UR - https://www.mdpi.com/books/pdfview/book/3130
SN - 978-3-03943-523-4
SN - 978-3-03943-524-1
SP - 1
EP - 180
PB - MDPI
CY - Basel
AN - OPUS4-51661
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - GEN
ED - Bosse, H.
ED - Buhr, E.
ED - Dziomba, T.
ED - Hodoroaba, Vasile-Dan
ED - Klein, T.
ED - Krumrey, M.
T1 - NanoWorkshop 2018: Workshop on Reference Nanomaterials
T2 - NanoWorkshop 2018: Workshop on Reference Nanomaterials
N2 - The Scope of the Workshop was to provide a forum for discussion on progress in development, characterisation and application of reference nanomaterials. Results of recently finsihed national and international research projects have been presented. Moreover, the need for future developments have been addressed.
Attendees of teh Workshop were expected to be experts from academia, research institutes, regulatory bodies and industry working or interested in the area of reference nanomaterials.
The following structure of Workshop was planned: the main focus of the first day was on reference material needs and development, while teh second day was focussed on reference materials characterisation and standardisation.
Over 111 participants frm 13 countries and teh European Joint Research Centre have regsitered for the Workshop with 16 platform presentations and 42 poster contributions grouped in 2 sessions and 10 topical areas.
A summary of the observations, analysis and conclusions of the Workshop is made including an overview table of links to information on existing reference nanomaterials.
KW - Reference Nanomaterials
KW - Nanometrology
KW - Standardization
KW - Nanoparticle Characterization
KW - Comparability of Measurement Results
KW - Nanomaterial Properties
PY - 2019
SN - 78-3-95606-440-1
DO - https://doi.org/10.7795/110.20190412
SN - 0179-0609
VL - 2018
SP - 1
EP - 315
PB - Physikalisch-Technische Bundesanstalt
CY - Braunschweig
AN - OPUS4-47861
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
ED - Krüger, Jörg
ED - Bonse, Jörn
T1 - Special Issue "Advanced Pulse Laser Machining Technology"
T2 - Materials
N2 - Advanced Pulse Laser Machining Technology is a rapidly growing field to tailor special industrial and scientific applications. This is significantly driven by the availability of high-repetition rate laser sources and novel beam delivery concepts.
This Special Issue focuses on developments in areas of surface and volume laser material processing, including spatial and temporal beam shaping, Bessel-beam dicing, direct laser interference patterning (DLIP), laser-induced forward transfer (LIFT), pulse burst machining, waveguide writing, and two-photon polymerization. Additionally, limitations of modern laser processing caused by failure of laser optics or unwanted secondary hazards like X-ray emission are addressed.
Here, we would like to attract contributors from industry and academics. This Special Issue shall bundle original research and review articles of the latest achievements.
KW - Advanced ultrashort-laser technology
KW - Bessel-beam laser dicing
KW - Direct laser interference patterning (DLIP)
KW - High-repetition rate ultrafast laser processing
KW - Laser-induced forward transfer (LIFT)
KW - X-ray hazards during ultrafast laser processing
KW - Volume processing, waveguide writing
KW - Temporal beam shaping for precision machining
PY - 2023
UR - https://www.mdpi.com/journal/materials/special_issues/pulse_laser_machining
SN - 1996-1944
PB - MDPI
CY - Basel
AN - OPUS4-56842
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -