Research

Our research focus is the investigation of structural, topographical, and chemical changes taking place on the surface and in the bulk of materials during their synthesis, manufacturing, and use. To this aim, we will perform in-situ and real-time studies, establishing correlated workflows between different characterization techniques.

On this page, we briefly describe the main scientific goals of the MAPEX Core Facility. A more comprehensive overview can be found in the "research highlights" section.

In-situ, real-time investigations

MAPEX-CF enables in-situ and real-time studies by applying mechanical, thermal or chemical loads on the samples. Different environmental chambers, gas nozzles, heating/cooling stages and mechanical testing systems are integrated into our microscopy, diffraction and spectroscopy instruments.

Correlated Workflows

Complementary techniques like XRM, EDX + FIB/SEM, AFM + Raman/VSI retrieve chemical composition of different samples. These workflows allow simultaneous chemical, structural and surface analysis. More workflows are being developed through MAPEX-CF-funded projects.

 

High-throughput screening

MAPEX-CF focuses on rapid, large sample analysis with a large degree of automation. For this approach, implementation of robotic arms and other technologies are foreseen.

Materials Modeling

In collaboration with BCCMS, MAPEX-CF integrates experimental information with simulations (materials modeling). Tools like TEM and XRD together with DFT calculations and AFM measurements provide multi-scale input for accurate modeling of material behaviour.

Research Highlights

2026


3D atomic structure determination with ultrashort-pulse MeV electron diffraction pic
X-Ray Diffraction|

3D atomic structure determination with ultrashort-pulse MeV electron diffraction

V. Hennicke, M. Hachmann, P.B. Klar, P.Y.A. Reinke, T. Pakendorf, J. Meyer, H. Delsim-Hashemi, M. Barthelmess, S. Thekku Veedu, P. Fischer, A.C. Rodrigues, A. Qelaj, A. Tolstikova, O. Yefanov, J. Wernsmann, F. Lemery, R. Schubert, I. De Diego, S. Hayes, S. Günther, S. Falke, E. Fröjd, A. Mozzanica,…

find out more: 3D atomic structure determination with ultrashort-pulse MeV electron diffraction

Temperature-dependent properties
X-Ray Diffraction| Spectroscopy|

Temperature-dependent properties and phase changes of the mullite-type Pb₂(Pb₁₋ₓSnₓ)O₄ solid solution

Christopher S. Reuter, Lars Robben, M. Mangir Murshed, Thorsten M. Gesing

Journal of Solid State Chemistry 359 (2026): 126008

https://doi.org/10.1016/j.jssc.2026.126008

Each member of the mullite-type Pb2(Pb1-xSnx)O4 solid-solution can be described with the schafarzikite structure type. The…

find out more: Temperature-dependent properties and phase changes of the mullite-type Pb₂(Pb₁₋ₓSnₓ)O₄ solid solution

Growth, structure, and morphology of
X-Ray Diffraction| Spectroscopy|

Growth, structure, and morphology of ultra-thin tin oxide phases forming on Pt₃Sn(111) single crystals upon exposure to oxygen

Nicolas Braud, Harald J. Wallander, Lars Buß, Mats Löfstrand, Jakob Blomqvist, Claire Berschauer, A. Morales Rodriguez, Philip M. Kofoed, Andrea Resta, Jon-Olaf Krisponeit, Th H. Schmidt, Edvin Lundgren, Jan I. Flege, Jens Falta, Lindsay R. Merte

Surface Science 767 (2026): 122927

…

find out more: Growth, structure, and morphology of ultra-thin tin oxide phases forming on Pt₃Sn(111) single crystals upon exposure to oxygen

Do magmatic sill intrusions simply
3D Materials Analytics|

Do magmatic sill intrusions simply liberate the sulphur of the sedimentary reservoirs?

Alban Cheviet, Flavien Choulet, Martine Buatier, Christophe Galerne, Wolfgang Bach, Wolf-Achim Kahl, Armelle Riboulleau, Lucie Pastor

Geochimica et Cosmochimica Acta (2026): S0016703726001365

https://doi.org/10.1016/j.gca.2026.02.043

Sedimentary basins are at the interface between deep…

find out more: Do magmatic sill intrusions simply liberate the sulphur of the sedimentary reservoirs?

2025


Growth and oxidation of ultra-thin Pt-Sn layers on Pt(111) by molecular and atomic oxygen
Spectroscopy|

Growth and oxidation of ultra-thin Pt-Sn layers on Pt(111) by molecular and atomic oxygen

Nicolas Braud, Lars Buß, Lindsay Richard Merte, Harald Wallander, Jon-Olaf Krisponeit, Thomas Schmidt, Edvin Lundgren, Jan Ingo Flege, Jens Falta

Ultramicroscopy 278 (2025): 114243

https://doi.org/10.1016/j.ultramic.2025.114243

The preparation of ultra-thin PtSn-alloyed layers by molecular beam…

find out more: Growth and oxidation of ultra-thin Pt-Sn layers on Pt(111) by molecular and atomic oxygen

Partial-to-fully oxidized spectrum of Ti3C2Tx MXene-derived TiO2 free-standing films for nonvolatile high endurance memristive data storage pic
X-Ray Diffraction| Spectroscopy| Electron Microscopy|

Partial-to-fully oxidized spectrum of Ti₃C₂Tₓ MXene-derived TiO₂ free-standing films for nonvolatile high endurance memristive data storage

Kubra Sattar, Rabia Tahir, Muhammad Yousaf, Thorsten M. Gesing, M. Mangir Murshed, Syed Rizwan

Applied Physics Reviews 12 (2025): 041413

https://doi.org/10.1063/5.0293660

As an exemplary member of the MXene family belonging to the class of two-dimensional materials, titanium carbide (Ti3C2Tx)…

find out more: Partial-to-fully oxidized spectrum of Ti₃C₂Tₓ MXene-derived TiO₂ free-standing films for nonvolatile high endurance memristive data storage

On-chip catalytic combustion of hydrogen using Pt and Ru quantum-crystallites on functionalized SiO2 aerogels pic
X-Ray Diffraction| Electron Microscopy|

On-chip catalytic combustion of hydrogen using Pt and Ru quantum-crystallites on functionalized SiO₂ aerogels

Ana Luiza Silveira Fiates, Oliver Thüringer, Andreas Schander, Raphaell Moreira, Marco Schowalter, Wilke Dononelli, Konrad Krämer, Andreas Rosenauer, Thorsten M. Gesing, Michael J. Vellekoop

Journal of Materials Science: Materials in Engineering 20 (2025): 140 

…

find out more: On-chip catalytic combustion of hydrogen using Pt and Ru quantum-crystallites on functionalized SiO₂ aerogels

Gas phase synthesis of mixed Cu1.8S-ZnS particles and the terminal phases in the reducing atmosphere pic
X-Ray Diffraction| Electron Microscopy|

Gas phase synthesis of mixed Cu₁.₈S-ZnS particles and the terminal phases in the reducing atmosphere

Suman Pokhrel, Muhammad Ali Martuza, Jan Derk Groeneveld, Marco Schowalter, Andreas Rosenauer, Johannes Birkenstock, Lutz Mädler

Powder Technology 465 (2025): 121318

https://doi.org/10.1016/j.powtec.2025.121318

The synthesis of Cu₁.₈S, ZnS, and Cu₁.₈S-ZnS composite nanoparticles is achieved via…

find out more: Gas phase synthesis of mixed Cu₁.₈S-ZnS particles and the terminal phases in the reducing atmosphere

Reactive transport modelling of autogenous self-healing: Impact of portlandite content and degree of hydration article
3D Materials Analytics|

Reactive transport modelling of autogenous self-healing: Impact of portlandite content and degree of hydration

Daniel Lahmann, Wolf-Achim Kahl, Sylvia Keßler

Cement and Concrete Research 197 (2025): 107965 

https://doi.org/10.1016/j.cemconres.2025.107965

Autogenous self-healing of cracked concrete remains a highly uncertain phenomenon in building practice, with the influence of the binder composition and…

find out more: Reactive transport modelling of autogenous self-healing: Impact of portlandite content and degree of hydration

Controlled Synthesis of Copper Sulfide Nanoparticles in Oxygen-Deficient Conditions Using Flame Spray Pyrolysis (FSP) and Its Potential Application
X-Ray Diffraction| Electron Microscopy|

Controlled Synthesis of Copper Sulfide Nanoparticles in Oxygen-Deficient Conditions Using Flame Spray Pyrolysis (FSP) and Its Potential Application

Muhammad Ali Martuza, Suman Pokhrel, Jakob Stahl, Marco Schowalter, Andreas Rosenauer, Lutz Mädler

Small 21 (2025): 2409993

https://doi.org/10.1002/smll.202409993

The objective of this study is to investigate the influence of various process parameters, such as the fuel-to-oxygen ratio, precursor…

find out more: Controlled Synthesis of Copper Sulfide Nanoparticles in Oxygen-Deficient Conditions Using Flame Spray Pyrolysis (FSP) and Its Potential Application

Sill Stacking in Subseafloor Unconsolidated Sediments and Control on Sustained Hydrothermal Systems: Evidence From IODP Drilling in the Guaymas Basin, Gulf of California
3D Materials Analytics| MAPEX Research Highlights|

Sill Stacking in Subseafloor Unconsolidated Sediments and Control on Sustained Hydrothermal Systems: Evidence From IODP Drilling in the Guaymas Basin, Gulf of California

Christophe Galerne, Alban Cheviet, Wolf-Achim Kahl, Christin Wiggers, Wolfgang Bach, Florian Neumann, Martine Buatier, Tobias W. Höfig, Daniel Lizarralde, Andreas Teske, Manet Peña-Salinas, Jens Karstens, Christoph Böttner, Christian Berndt, Ivano W. Aiello, Kathleen M. Marsaglia, Swanne…

find out more: Sill Stacking in Subseafloor Unconsolidated Sediments and Control on Sustained Hydrothermal Systems: Evidence From IODP Drilling in the Guaymas Basin, Gulf of California

research highlight pic morales 2025
Spectroscopy|

Stabilization of Ce³⁺ cations via U–Ce charge transfer in mixed oxides: consequences on the thermochemical water splitting to hydrogen

Carlos Morales, Rudi Tschammer, Thomas Gouder, YongMan Choi, Dalaver Anjum, Aman Baunthiyal, Jon-Olaf Krisponeit, Jens Falta, Jan Ingo Flege, Hicham Idriss

J. Phys. Energy 7 (2025): 025012

https://doi.org/10.1088/2515-7655/adbad9

The work's objective is to enhance the generation of H2 via the…

find out more: Stabilization of Ce³⁺ cations via U–Ce charge transfer in mixed oxides: consequences on the thermochemical water splitting to hydrogen

Making parts on Mars: Laser processing of iron contaminated by regolith simulant pic
3D Materials Analytics| X-Ray Diffraction| Electron Microscopy|

Making parts on Mars: Laser processing of iron contaminated by regolith simulant

Askar Kvaratskheliya, Aleksandr Filimonov, Bruno Bianchini, Muchammad Izzuddin Jundullah Hanafi, Thorsten M. Gesing, Taisuke T. Sasaki, Piter Gargarella, Lutz Mädler, Ilya Okulov

Materials Today Advances 25 (2025): 100566

https://doi.org/10.1016/j.mtadv.2025.100566

Manufacturing pure metals on…

find out more: Making parts on Mars: Laser processing of iron contaminated by regolith simulant

research highlight pic
Surface Analytics|

High-Temperature Growth of CeOₓ on Au(111) and Behavior under Reducing and Oxidizing Conditions

Rudi Tschammer, Lars Buß, Emilia Pożarowska, Carlos Morales, Sanjaya D. Senanayake, Mauricio J. Prieto, Liviu C. Tănase, Lucas de Souza Caldas, Aarti Tiwari, Thomas Schmidt, Miguel A. Niño, Michael Foerster, Jens Falta, Jan Ingo Flege

J. Phys. Chem. C 129 (2025): 3583–3594

…

find out more: High-Temperature Growth of CeOₓ on Au(111) and Behavior under Reducing and Oxidizing Conditions

Effect of intrinsic heat treatment on the precipitate formation of X40CrMoV5–1 tool steel during laser-directed energy deposition: A coupled study of atom probe tomography and in situ synchrotron X-ray diffraction pic
3D Materials Analytics| Correlated Workflows| X-Ray Diffraction| Electron Microscopy|

Effect of intrinsic heat treatment on the precipitate formation of X40CrMoV5–1 tool steel during laser-directed energy deposition: A coupled study of atom probe tomography and in situ synchrotron X-ray diffraction

Antonio Carlos de F. Silveira, Lisa T. Belkacemi, Pedro José de Castro, Marco Schowalter, Rainer Fechte-Heinen, Jérémy Epp

Acta Materialia 283 (2025): 120488

https://doi.org/10.1016/j.actamat.2024.120488

Additively manufactured components are generally heat treated to remove the undesired…

find out more: Effect of intrinsic heat treatment on the precipitate formation of X40CrMoV5–1 tool steel during laser-directed energy deposition: A coupled study of atom probe tomography and in situ synchrotron X-ray diffraction

Towards coupling agent-free composites made from regenerated cellulose/HDPE by UV radiation-induced cross-linking pic
Spectroscopy|

Towards coupling agent-free composites made from regenerated cellulose/HDPE by UV radiation-induced cross-linking

Raja Bade, Beate Gebert, Larisa Tsarkova, Thomas Bahners, Jochen S. Gutmann, Dietmar Koch, M. Mangir Murshed, Jörg Müssig

Composite Interfaces (2025): 1-21

https://doi.org/10.1080/09276440.2024.2448883

This research aims to enhance fibre-matrix adhesion in bio-based fibre-reinforced polyolefins…

find out more: Towards coupling agent-free composites made from regenerated cellulose/HDPE by UV radiation-induced cross-linking

Hexagons on rectangles: Epitaxial graphene on Ru pic
Spectroscopy| Surface Analytics|

Hexagons on rectangles: Epitaxial graphene on Ru(1010)

Lars Buß, Giovanni Zamborlini, Cathy Sulaiman, Moritz Ewert, Mirko Cinchetti, Jens Falta, Jan Ingo Flege

Carbon 231 (2025): 119600

https://doi.org/10.1016/j.carbon.2024.119600

Ruthenium is emerging as a promising candidate to replace copper in highly integrated electronics by enabling barrierless…

find out more: Hexagons on rectangles: Epitaxial graphene on Ru(1010)

2024


Characterization of structure and mixing in nanoparticle hetero-aggregates using convolutional neural networks: 3D-reconstruction versus 2D-projection article picture
Electron Microscopy|

Characterization of structure and mixing in nanoparticle hetero-aggregates using convolutional neural networks: 3D-reconstruction versus 2D-projection

Christoph Mahr, Jakob Stahl, Beeke Gerken, Florian F. Krause, Marco Schowalter, Tim Grieb, Lutz Mädler, Andreas Rosenauer

Ultramicroscopy 265 (2024): 114020

https://doi.org/10.1016/j.ultramic.2024.114020

Structural and chemical characterization of nanomaterials provides important information for…

find out more: Characterization of structure and mixing in nanoparticle hetero-aggregates using convolutional neural networks: 3D-reconstruction versus 2D-projection

Synthesis, structural and spectroscopic characterization of defect-rich forsterite as a representative phase of Martian regolith pic
Materials Modelling| X-Ray Diffraction| Spectroscopy|

Synthesis, structural and spectroscopic characterization of defect-rich forsterite as a representative phase of Martian regolith

Muchammad Izzuddin Jundullah Hanafi, Lorenzo Bastonero, Mohammad Mangir Murshed, Lars Robben, Wilke Dononelli, Andrea Kirsch, Nicola Marzari, Thorsten M. Gesing

IUCrJ 11 (2024): 977-990

https://doi.org/10.1107/S2052252524009722

Regolith draws intensive research attention because of its importance…

find out more: Synthesis, structural and spectroscopic characterization of defect-rich forsterite as a representative phase of Martian regolith

Photo Electrocatalytic Water Splitting Using Sn Doped In2S3 Homologous Series Synthesized in Oxygen Deficient Flame pic
X-Ray Diffraction| Electron Microscopy|

Photo Electrocatalytic Water Splitting Using Sn Doped In₂S₃ Homologous Series Synthesized in Oxygen Deficient Flame

Suman Pokhrel, Jakob Stahl, Lizhuo Wang, Rui Tang, Haoyue Sun, Malte Schalk, Marco Schowalter, Andreas Rosenauer, Jun Huang, Johannes Kiefer, Johannes Birkenstock, Lutz Mädler

Advanced Functional Materials (2024): 2411521

https://doi.org/10.1002/adfm.202411521

The innovative development of…

find out more: Photo Electrocatalytic Water Splitting Using Sn Doped In₂S₃ Homologous Series Synthesized in Oxygen Deficient Flame

Composition and strain of the pseudomorphic α-phase intermediate layer at the Ga2O3/Al2O3 interface  pic
Electron Microscopy|

Composition and strain of the pseudomorphic α-phase intermediate layer at the Ga₂O₃/Al₂O₃ interface

M. Schowalter, A. Karg, M. Alonso-Orts, J. A. Bich, S. Raghuvansy, M. S. Williams, F. F. Krause, T. Grieb, C. Mahr, T. Mehrtens, P. Vogt, A. Rosenauer, M. Eickhoff

APL Materials 12 (2024): 091104

https://doi.org/10.1063/5.0226857

We investigate the composition of α-phase intermediate layers at…

find out more: Composition and strain of the pseudomorphic α-phase intermediate layer at the Ga₂O₃/Al₂O₃ interface

Mechanochemical synthesis of (Mg1−xFe x )2SiO4 olivine phases relevant to Martian regolith: structural and spectroscopic characterizations article picture
X-Ray Diffraction| Spectroscopy|

Mechanochemical synthesis of (Mg₁₋ₓFeₓ)₂SiO₄ olivine phases relevant to Martian regolith: structural and spectroscopic characterizations

Izzuddin Jundullah Hanafi, M. Mangir Murshed, Lars Robben, Thorsten M. Gesing

Zeitschrift für Kristallographie - Crystalline Materials (2024)

https://doi.org/10.1515/zkri-2024-0078

To fabricate metals from the base materials for future Mars exploration, synthesis of representative olivine phases…

find out more: Mechanochemical synthesis of (Mg₁₋ₓFeₓ)₂SiO₄ olivine phases relevant to Martian regolith: structural and spectroscopic characterizations

2023


The Picture of Sputter-Deposited β-Ga₂O₃ Films With Al Top Electrodes for Resistive Random Access Memory Technology (2023)
Surface Analytics| Electron Microscopy|

Sputter-Deposited β-Ga₂O₃ Films With Al Top Electrodes for Resistive Random Access Memory Technology

Aman Baunthiyal, Jon Olaf Krisponeit, Alexander Karg, Seyed Majid Mahdian, Marco Schowalter, Thorsten Mehrtens, Martin Eickhoff, Andreas Rosenauer, Jens Falta

IEEE Xplore   (2023) 

Doi: 10.1109/NMDC57951.2023.10343972

Gallium oxide (β−Ga2O3) has been considered as a promising candidate for…

find out more: Sputter-Deposited β-Ga₂O₃ Films With Al Top Electrodes for Resistive Random Access Memory Technology

Picture Of Growth and characterization of sputter-deposited Ga2O3- based memristive devices 2023 Article
Surface Analytics| Electron Microscopy|

Growth and characterization of sputter-deposited Ga₂O₃ -based memristive devices

Aman Baunthiyal, Jon-Olaf Krisponeit, Marco Schowalter, Thorsten Mehrtens, Alexander Karg, Andreas Rosenauer, Martin Eickhoff, Jens Falta

Applied Physics Letters 123 (2023): 213504

https://doi.org/10.1063/5.0170354

In the last few years, there has been significant interest in gallium oxide…

find out more: Growth and characterization of sputter-deposited Ga₂O₃ -based memristive devices

Figure from the paper of Guo et al.
3D Materials Analytics| Spectroscopy|

Gold Nanoparticle-Coated Bioceramics for Plasmonically Enhanced Molecule Detection via Surface-Enhanced Raman Scattering

Tongwei Guo, Jonas Schmidt, Mohammad Mangir Murshed, Kurosch Rezwan, Michael Maas

Advanced Engineering Materials 25 (2023): 2300942

https://doi.org/10.1002/adem.202300942

Herein, feasibility of plasmonically enhanced molecule detection via surface-enhanced Raman scattering for ceramics that are…

find out more: Gold Nanoparticle-Coated Bioceramics for Plasmonically Enhanced Molecule Detection via Surface-Enhanced Raman Scattering

Quantitative three-dimensional local order analysis
MAPEX Research Highlights|

Quantitative three-dimensional local order analysis of nanomaterials through electron diffraction

Ella Mara Schmidt, Paul Benjamin Klar, Yasar Krysiak, Petr Svora, Andrew L. Goodwin, Luke Palatinus

Nature Communications 14 (2023): 6512

doi:  10.1038/s41467-023-41934-y

Structure-property relationships in ordered materials have long been a core principle in materials design. However, the…

find out more: Quantitative three-dimensional local order analysis of nanomaterials through electron diffraction

Figure from the publication
3D Materials Analytics|

Timing of carbon uptake by oceanic crust determined by rock reactivity

Elmar Albers, Svenja Jöns, Axel Gerdes, Andreas Klügel, Christoph Beier, Simone A. Kasemann, Wolfgang Bach

Geology 51 (2023): 875

https://doi.org/10.1130/G51238.1

Carbonate formation during the alteration of oceanic crust is a global CO2 sink. Its timing and controls are not well understood,…

find out more: Timing of carbon uptake by oceanic crust determined by rock reactivity

Dispersal of endolithic microorganisms in vesicular volcanic rock: Distribution, settlement and pathways revealed by 3D X-ray microscopy pic
3D Materials Analytics| MAPEX Research Highlights|

Dispersal of endolithic microorganisms in vesicular volcanic rock: Distribution, settlement and pathways revealed by 3D X-ray microscopy

Hinrich A. Schmid-Beurmann, Wolf-Achim Kahl, Wolfgang Bach, Magnus Ivarsson, Michael Ernst Böttcher, Jörn Peckmann

Terra Nova 35 (2023): 396–403

https://doi.org/10.1111/ter.12663

Pleistocene basanitic rocks of Vesteris Seamount in the Greenland Sea had been found to exhibit an endolithic habitat…

find out more: Dispersal of endolithic microorganisms in vesicular volcanic rock: Distribution, settlement and pathways revealed by 3D X-ray microscopy

Figure from the publication
Correlated Workflows| Spectroscopy| Electron Microscopy|

Correlative analysis on InGaN/GaN nanowires: structural and optical properties of self-assembled short-period superlattices

Manuel Alonso‑Orts, Rudolfo Hötzel, Tim Grieb, Matthias Auf der Maur, Maximilian Ries, Felix Nippert, Benjamin März, Knut Müller‑Caspary, Markus R. Wagner, Andreas Rosenauer, Martin Eickhoff

DiscoverNano 18 (2023): 27

https://doi.org/10.1186/s11671-023-03808-6

The influence of self-assembled…

find out more: Correlative analysis on InGaN/GaN nanowires: structural and optical properties of self-assembled short-period superlattices

Figure from the publication
Spectroscopy|

Low‐energy electron microscopy intensity–voltage data – Factorization, sparse sampling and classification

Francesco Masia, Wolfgang Langbein, Simon Fischer, Jon-Olaf Krisponeit, Jens Falta

Journal of Microscopy  289 (2023): 91-106

https://doi.org/10.1111/jmi.13155

Low-energy electron microscopy (LEEM) taken as intensity–voltage (I–V) curves provides hyperspectral images of surfaces, which can be used…

find out more: Low‐energy electron microscopy intensity–voltage data – Factorization, sparse sampling and classification

Oxygen Storage by Tin Oxide Monolayers on Pt3Sn(111) pic
Spectroscopy| Surface Analytics|

Oxygen Storage by Tin Oxide Monolayers on Pt₃Sn(111)

Lindsay R. Merte, Nicolas Braud, Lars Buß, Malthe Kjær Bisbo, Harald J. Wallander, Jon-Olaf Krisponeit, Jan Ingo Flege, Bjørk Hammer, Jens Falta, Edvin Lundgren

The Journal of Physical Chemistry C. 127(6) (2023): 2988-2994

https://doi.org/10.1021/acs.jpcc.2c09041

The high performance of…

find out more: Oxygen Storage by Tin Oxide Monolayers on Pt₃Sn(111)

Halide-sodalites: thermal expansion, decomposition and the Lindemann criterion pics
Materials Modelling| X-Ray Diffraction|

Halide-sodalites: thermal behavior at low temperatures and local deviations from the average structure

Marius Wolpmann, Martin Etter, Andrea Kirsch, Filippo Balzaretti, Wilke Dononelli, Lars Robben, Thorsten M. Gesing

Zeitschrift für Kristallographie - Crystalline Materials 238 (2023): 27 - 38

https://doi.org/10.1515/zkri-2022-0037

Sodalites of the general type |Na8X2|[T1T2O4]6 with X = Cl−, Br−,…

find out more: Halide-sodalites: thermal behavior at low temperatures and local deviations from the average structure

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3D Materials Analytics|

Gas Atomization of Duplex Stainless Steel Powder for Laser Powder Bed Fusion

Chengsong Cui, Felix Stern, Nils Ellendt, Volker Uhlenwinkel, Matthias Steinbacher, Jochen Tenkamp, Frank Walther, Rainer Fechte-Heinen

Materials 16 (2023): 435

https://doi.org/10.3390/ma16010435

Duplex stainless steel powders for laser additive manufacturing have not been developed extensively.…

find out more: Gas Atomization of Duplex Stainless Steel Powder for Laser Powder Bed Fusion

2022


TEM
Materials Modelling| Electron Microscopy|

Deformed Honeycomb Lattices of InGaAs Nanowires Grown on Silicon-on-Insulator for Photonic Crystal Surface-Emitting Lasers

Cristian Messina, Yongkang Gong, Oumaima Abouzaid, Bogdan-Petrin Ratiu, Tim Grieb, Zhao Yan, Andreas Rosenauer, Sang Soon Oh, Qiang Li

Advanced Optical Materials 11 (2022): 2201809

https://doi.org/10.1002/adom.202201809

Photonic crystals can be used to achieve high-performance surface-emitting…

find out more: Deformed Honeycomb Lattices of InGaAs Nanowires Grown on Silicon-on-Insulator for Photonic Crystal Surface-Emitting Lasers

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In-situ, real-time investigations| Spectroscopy|

Growth Mechanism of Single-Domain Monolayer MoS₂ Nanosheets on Au(111) Revealed by In Situ Microscopy: Implications for Optoelectronics Applications

Moritz Ewert, Lars Buß, Jeppe V. Lauritsen, Jens Falta, and Jan Ingo Flege

ACS Appl. Nano Mater. 5 (2022): 17702–17710

https://doi.org/10.1021/acsanm.2c03584

The nucleation and growth of single-layer molybdenum disulfide single-domain nanosheets is investigated by in situ low-energy electron…

find out more: Growth Mechanism of Single-Domain Monolayer MoS₂ Nanosheets on Au(111) Revealed by In Situ Microscopy: Implications for Optoelectronics Applications

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Correlated Workflows| Electron Microscopy|

New Perspectives for Evaluating the Mass Transport in Porous Catalysts and Unfolding Macro- and Microkinetics

Stefan Wild, Christoph Mahr, Andreas Rosenauer, Thomas Risse, Sergey Vasenkov, Marcus Bäumer

Catal Lett 153 (2023): 3405–3422

https://doi.org/10.1007/s10562-022-04218-6

In this article we shed light on newly emerging perspectives to characterize and understand the interplay of diffusive mass…

find out more: New Perspectives for Evaluating the Mass Transport in Porous Catalysts and Unfolding Macro- and Microkinetics

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Electron Microscopy|

Dose efficient annular bright field contrast with the ISTEM method: A proof of principle demonstration

Florian F. Krause, Marco Schowalter, Beeke Gerken, Dennis Marquardt, Tim Grieb, Thorsten Mehrtens, Christoph Mahr, Andreas Rosenauer

Ultramicroscopy 245 (2023): 113661

https://doi.org/10.1016/j.ultramic.2022.113661

The ISTEM mode for TEM has been demonstrated to have several advantages in regard…

find out more: Dose efficient annular bright field contrast with the ISTEM method: A proof of principle demonstration

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Correlated Workflows| In-situ, real-time investigations| X-Ray Diffraction| Spectroscopy| Electron Microscopy|

On red tin (II) oxide: temperature-dependent structural, spectroscopic, and thermogravimetric properties

Sarah Wittmann,  M. Mangir Murshed,  Thorsten M. Gesing

Z. Anorg. Allg. Chem. 648 (2022): e20220031

https://doi.org/10.1002/zaac.202200311

Polycrystalline red tin(II)oxide (RSO) has been synthesized by a fast reflux method. X-ray powder diffraction (XRPD) data Rietveld refinement confirms the…

find out more: On red tin (II) oxide: temperature-dependent structural, spectroscopic, and thermogravimetric properties

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In-situ, real-time investigations| Spectroscopy|

Phase Separation within Vanadium Oxide Islands under Reaction Conditions: Methanol Oxidation at Vanadium Oxide Films on Rh(111)

Bernhard von Boehn, Anton Weißbach, Jon-Olaf Krisponeit, Jan Ingo Flege, Jens Falta, Luca Gregoratti, Matteo Amati, Patrick Zeller, and Ronald Imbihl

J. Phys. Chem. C. 126 (2022): 19101–19112

https://doi.org/10.1021/acs.jpcc.2c04174

Submonolayer coverages of V-oxide on Rh(111) condense during…

find out more: Phase Separation within Vanadium Oxide Islands under Reaction Conditions: Methanol Oxidation at Vanadium Oxide Films on Rh(111)

picture
Correlated Workflows| In-situ, real-time investigations| X-Ray Diffraction|

Effects of iron substitution and anti-site disorder on crystal structures, vibrational, optical and magnetic properties of double perovskites Sr₂(Fe₁₋ₓNiₓ)TeO₆

Asmaa Zaraq, Duncan H. Gregory, Brahim Orayech, Josu M. Igartua, Abdeslam El Bouari, James D. Eales, Paul A. Bingham and Thorsten M. Gesing

Dalton Transactions 45 (2022): 4086

https://doi.org/10.1039/D2DT02447K

The double-perovskite series, Sr2(Fe1−xNix)TeO6 (x = 0, 0.25, 0.50, 0.75, and 1) has…

find out more: Effects of iron substitution and anti-site disorder on crystal structures, vibrational, optical and magnetic properties of double perovskites Sr₂(Fe₁₋ₓNiₓ)TeO₆

The İmage of Nano-crystalline precursor formation, stability, and transformation to mullite-type visible-light photocatalysts (2022)
X-Ray Diffraction| Spectroscopy|

Nano-crystalline precursor formation, stability, and transformation to mullite-type visible-light photocatalysts

Thorsten M. Gesing, M. Mangir Murshed, Selina Schuh, Oliver Thüringer, Konrad Krämer, Tim Neudecker, Cecilia B. Mendive & Lars Robben 

Journal of Materials Science 57 (2022): 19280-19299

https://doi.org/10.1007/s10853-022-07854-w

A new precursor for the formation of mullite-type visible-light…

find out more: Nano-crystalline precursor formation, stability, and transformation to mullite-type visible-light photocatalysts

[Translate to English:]
Correlated Workflows| Electron Microscopy|

Investigation of the dealloying front in partially corroded alloys

Christoph Mahr, Jorge Adrian Tapia Burgos, Marco Schowalter, Arne Wittstock, Andreas Rosenauer

Materials Research Letters 10 (2022): 824-831

https://doi.org/10.1080/21663831.2022.2109941

Nanoporous gold as obtained by corrosion of alloys of gold and a less noble metal is a system with manifold…

find out more: Investigation of the dealloying front in partially corroded alloys

The Picture of Enhanced weathering in the seabed: Rapid olivine dissolution and iron sulfide formation in submarine volcanic ash (2022)
3D Materials Analytics| Spectroscopy|

Enhanced weathering in the seabed: Rapid olivine dissolution and iron sulfide formation in submarine volcanic ash

Wolf-Achim Kahl, Andreas Klügel, Wolfgang Bach, Mangir Murshed

American Mineralogist 107 (2022): 1668–1680

https://doi.org/10.2138/am-2022-8057

In basaltic volcanic ash recovered from a seamount at 3000 m water depth, we discovered marcasite and pyrite precipitation within cavities that formed…

find out more: Enhanced weathering in the seabed: Rapid olivine dissolution and iron sulfide formation in submarine volcanic ash

[Translate to English:]
Electron Microscopy|

Angle-dependence of ADF-STEM intensities for chemical analysis of InGaN/GaN

Tim Grieb, Florian F.Krause, Knut Müller-Caspary, Jan Philipp Ahl, Marco Schowalter, Oliver Oppermann, Joachim Hertkorn, Karl Engl, Andreas Rosenauer

Ultramicroscopy 238 (2022): 113503

https://doi.org/10.1016/j.ultramic.2022.113535

In this paper we perform angular resolved annular-dark field…

find out more: Angle-dependence of ADF-STEM intensities for chemical analysis of InGaN/GaN

[Translate to English:]
Electron Microscopy|

Towards the interpretation of a shift of the central beam in nano-beam electron diffraction as a change in mean inner potential

Christoph Mahr, Tim Grieb, Florian F. Krause, Marco Schowalter, Andreas Rosenauer

Ultramicroscopy 236 (2022): 113503

https://doi.org/10.1016/j.ultramic.2022.113503

The measurement of electric fields in scanning transmission electron microscopy (STEM) is a highly investigated field of research.…

find out more: Towards the interpretation of a shift of the central beam in nano-beam electron diffraction as a change in mean inner potential

[Translate to English:]
Electron Microscopy|

Promoting Effect of the Residual Silver on the Electrocatalytic Oxidation of Methanol and Its Intermediates on Nanoporous Gold

Alex Ricardo Silva Olaya, Franziska Kühling, Christoph Mahr, Birthe Zandersons, Andreas Rosenauer, Jörg Weissmüller, Gunther Wittstock

ACS Catal. 12 (2022): 4415–4429

https://doi.org/10.1021/acscatal.1c05160

Nanoporous gold (NPG) obtained by dealloying Ag75Au25 with an overall residual Ag content…

find out more: Promoting Effect of the Residual Silver on the Electrocatalytic Oxidation of Methanol and Its Intermediates on Nanoporous Gold

[Translate to English:]
X-Ray Diffraction|

Revisiting the Growth of Large (Mg,Zr):SrGa₁₂O₁₉ Single Crystals: Core Formation and Its Impact on Structural Homogeneity Revealed by Correlative X-ray Imaging

Christo Guguschev, Carsten Richter, Mario Brützam, Kaspars Dadzis, Christian Hirschle, Thorsten M. Gesing, Michael Schulze, Albert Kwasniewski, Jürgen Schreuer, Darrell G. Schlom

Crystal Growth and Design 22 (2022): 2557–2568

https://doi.org/10.1021/acs.cgd.2c00030

We demonstrate the growth of…

find out more: Revisiting the Growth of Large (Mg,Zr):SrGa₁₂O₁₉ Single Crystals: Core Formation and Its Impact on Structural Homogeneity Revealed by Correlative X-ray Imaging

[Translate to English:]
Spectroscopy|

Plasmonic porous ceramics based on zirconia-toughened alumina functionalized with silver nanoparticles for surface-enhanced Raman scattering

Tongwei Guoa, Md Nurul Karim, Kowsik Ghosh, M. Mangir Murshed, Kurosch Rezwan, Michael Maas

Open Ceramics 9 (2022): 100228

https://doi.org/10.1016/j.oceram.2022.100228

We demonstrate the feasibility of plasmonic porous ceramics which combine the optical properties of plasmonic nanoparticles with…

find out more: Plasmonic porous ceramics based on zirconia-toughened alumina functionalized with silver nanoparticles for surface-enhanced Raman scattering

[Translate to English:]
X-Ray Diffraction|

Halide-sodalites: thermal expansion, decomposition and the Lindemann criterion

Marius Wolpmann, Lars Robben, Thorsten M. Gesing

Zeitschrift für Kristallographie - Crystalline Materials 237 (2022): 1-3

https://doi.org/10.1515/zkri-2022-0004

Twelve cubic sodalites |Na8X2|[T1T2O4]6 (T1 = Al3+, Ga3+; T2 = Si4+, Ge4+; X = Cl−, Br−, I−) were examined using high-temperature (HT)…

find out more: Halide-sodalites: thermal expansion, decomposition and the Lindemann criterion

2021


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Spectroscopy|

Structural, vibrational, thermal, and magnetic properties of mullite-type NdMnTiO₅ ceramic

Kowsik Ghosh, M. Mangir Murshed, Thomas Frederichs, Naveen K. C. Muniraju, Thorsten M. Gesing

Journal of the American Ceramic Society (2021), 105, 2702-2712

https://doi.org/10.1111/jace.18261

Mullite-type RMn2O5 (R = Y, rare-earth element) ceramics are of ongoing research attention because of…

find out more: Structural, vibrational, thermal, and magnetic properties of mullite-type NdMnTiO₅ ceramic

[Translate to English:]
X-Ray Diffraction| Spectroscopy|

Thermal anomalies and phase transitions in Pb₂Sc₂Si₂O₉ and Pb₂In₂Si₂O₉

Mathias Gogolin, M. Mangir Murshed, Lkhamsuren Bayarjargal, Detlef Klimm, Thorsten M. Gesing

Zeitschrift für Kristallographie - Crystalline Materials 236 (2021): 283-292

https://doi.org/10.1515/zkri-2021-2046

Pb2Sc2Si2O9 and Pb2In2Si2O9, respectively, the scandium and indium containing structural…

find out more: Thermal anomalies and phase transitions in Pb₂Sc₂Si₂O₉ and Pb₂In₂Si₂O₉

[Translate to English:]
In-situ, real-time investigations| Spectroscopy|

Structural Transitions Driving Interface Pulses in Methanol Oxidation on Rh(110) and VOₓ/Rh(110): A LEEM Study

Bernhard von Boehn, Jon-Olaf Krisponeit, Jens Falta, Ronald Imbihl

Journal of Physical Chemistry C 125 (2021): 22539–22546

https://doi.org/10.1021/acs.jpcc.1c06106

With LEEM (low-energy electron microscopy) and micro-LEED as in situ techniques we have studied the structural transitions in the…

find out more: Structural Transitions Driving Interface Pulses in Methanol Oxidation on Rh(110) and VOₓ/Rh(110): A LEEM Study

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Surface Analytics|

The role of crystal heterogeneity in alkali feldspar dissolution kinetics

Isabel Lange, Marcos Toro, Rolf S.Arvidson, Inna Kurganskaya, Andreas Lüttge

Geochimica et Cosmochimica Acta 309 (2021): 329-351

https://doi.org/10.1016/j.gca.2021.06.032

Intrinsic heterogeneities of crystals almost always impose challenges on the investigation of dissolution kinetics. In the…

find out more: The role of crystal heterogeneity in alkali feldspar dissolution kinetics

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Surface Analytics|

Influence of Processing Route on the Surface Reactivity of Cu₄₇Ti₃₃Zr₁₁Ni₆Sn₂Si₁ Metallic Glass

Erika Soares Barreto, Volker Uhlenwinkel, Maximilian Frey, Isabella Gallino, Ralf Busch, Andreas Lüttge

Metals 11 (2021): 1173

https://doi.org/10.3390/met11081173

Recently, laser additive manufacturing (AM) techniques have emerged as a promising alternative for the synthesis of bulk metallic…

find out more: Influence of Processing Route on the Surface Reactivity of Cu₄₇Ti₃₃Zr₁₁Ni₆Sn₂Si₁ Metallic Glass

The Transition From MoS2 Single-Layer to Bilayer Growth on the Au(111) Surface pic
Spectroscopy|

The Transition From MoS₂ Single-Layer to Bilayer Growth on the Au(111) Surface

Moritz Ewert, Lars Buß, Nicolas Braud, Asish K. Kundu, Polina M. Sheverdyaeva, Paolo Moras, Francesca Genuzio, Tevfik Onur Menteş, Andrea Locatelli, Jens Falta, Jan Ingo Flege

Front. Phys. 9 (2021): 654845

https://doi.org/10.3389/fphy.2021.654845

The transition from single-layer to bilayer growth…

find out more: The Transition From MoS₂ Single-Layer to Bilayer Growth on the Au(111) Surface

The Image of Quantitative 3D Characterization of Nanoporous Gold Nanoparticles by Transmission Electron Microscopy (2021)
Electron Microscopy|

Quantitative 3D Characterization of Nanoporous Gold Nanoparticles by Transmission Electron Microscopy

Christoph Mahr, Alexandra Dworzak, Marco Schowalter, Mehtap Oezaslan, Andreas Rosenauer

Microscopy and Microanalysis 27 (2021): 678 - 686

https://doi.org/10.1017/S1431927621000519

Quantitative structural characterization of nanomaterials is important to tailor their functional properties.…

find out more: Quantitative 3D Characterization of Nanoporous Gold Nanoparticles by Transmission Electron Microscopy

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Correlated Workflows| Surface Analytics|

Multiscale investigation of olivine (0 1 0) face dissolution from a surface control perspective

Xiaodong Li, Qianqian Wang, Xiaodong Shen, Elisabete T.Pedrosa, Andreas Lüttge

Applied Surface Science 549 (2021): 149317

https://doi.org/10.1016/j.apsusc.2021.149317

The surface reaction of olivine materials is critical for their extensive applications in the global cycle of elements, future CO2…

find out more: Multiscale investigation of olivine (0 1 0) face dissolution from a surface control perspective

The Image of Precise measurement of the electron beam current in a TEM (2021)
Electron Microscopy|

Precise measurement of the electron beam current in a TEM

Florian F. Krause, Marco Schowalter, Oliver Oppermann, Dennis Marquardt, Knut Müller-Caspary, Robert Ritz, Martin Simson, Henning Ryll, Martin Huth, Heike Soltau, Andreas Rosenauer

Ultramicroscopy 223 (2021): 113221

https://doi.org/10.1016/j.ultramic.2021.113221

Modern quantitative TEM methods…

find out more: Precise measurement of the electron beam current in a TEM

agglomerates figure
Materials Modelling|

A review of contact force models between nanoparticles in agglomerates, aggregates, and films

Stefan Christian Endres, Lucio Colombi Ciacchi, Lutz Mädler

Journal of Aerosol Science (2021), 153, 105719

https://doi.org/10.1016/j.jaerosci.2020.105719

A desire to optimise the production and performance of nanoparticle structured materials has driven the development of increasingly accurate…

find out more: A review of contact force models between nanoparticles in agglomerates, aggregates, and films

The Image of Angle-resolved STEM using an iris aperture: Scattering contributions and sources of error for the quantitative analysis in Si (2021)
Electron Microscopy|

Angle-resolved STEM using an iris aperture: Scattering contributions and sources of error for the quantitative analysis in Si

Tim Grieb, Florian F. Krause, Knut Müller-Caspary, Saleh Firoozabadi, Christoph Mahr, Marco Schowalter, Andreas Beyer, Oliver Oppermann, Kerstin Volz, Andreas Rosenauer

Ultramicroscopy 221 (2021): 113175

https://doi.org/10.1016/j.ultramic.2020.113175

The angle-resolved electron scattering is…

find out more: Angle-resolved STEM using an iris aperture: Scattering contributions and sources of error for the quantitative analysis in Si

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3D Materials Analytics|

Morphological transition during prograde olivine growth formed by high-pressure dehydration of antigorite-serpentinite to chlorite-harzburgite in a subduction setting

Nicole Dilissen, Károly Hidas Carlos J. Garrido, Vicente López Sánchez-Vizcaíno, Wolf-Achim Kahl

Lithos 382-383 (2021): 105949

https://doi.org/10.1016/j.lithos.2020.105949

Crystal morphologies are essential for deciphering the reaction history of igneous and metamorphic rocks because they often…

find out more: Morphological transition during prograde olivine growth formed by high-pressure dehydration of antigorite-serpentinite to chlorite-harzburgite in a subduction setting

The Image of Accurate measurement of strain at interfaces in 4D-STEM: A comparison of various methods (2021)
Electron Microscopy|

Accurate measurement of strain at interfaces in 4D-STEM: A comparison of various methods

Christoph Mahr, Knut Müller-Caspary, Tim Grieb, Florian F. Krause, Marco Schowalter, Andreas Rosenauer

Ultramicroscopy 221 (2021): 113196

https://doi.org/10.1016/j.ultramic.2020.113196

Strain analysis by nano-beam electron diffraction allows for measurements of strain with nanometre resolution in…

find out more: Accurate measurement of strain at interfaces in 4D-STEM: A comparison of various methods

2020


Eine kreisrunde Fläche aufgefächert
Spectroscopy|

The morphology of VO₂/TiO₂(001): terraces, facets, and cracks

Jon-Olaf Krisponeit, Simon Fischer, Sven Esser, Vasily Moshnyaga, Thomas Schmidt, Louis F. J. Piper, Jan Ingo Flege, Jens Falta

Nature Scientific Reports 10 (2020): 22374

https://doi.org/10.1038/s41598-020-78584-9

Vanadium dioxide (VO2) features a pronounced, thermally-driven metal-to-insulator…

find out more: The morphology of VO₂/TiO₂(001): terraces, facets, and cracks

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X-Ray Diffraction| Spectroscopy|

KLi₂RE(BO₃)₂ (RE = Dy, Ho, Er, Tm, Yb, and Y): Structural, Spectroscopic, And Thermogravimetric Studies on a Series of Mixed-Alkali Rare-Earth Orthoborates

Pengyun Chen, M. Mangir Murshed, Michael Fischer, Thomas Frederichs, Thorsten M. Gesing

Inorg. Chem 59 (2020): 18214–18224

https://doi.org/10.1021/acs.inorgchem.0c02684

We report a detailed structural, spectroscopic, and thermogravimetric investigation of a new series of mixed-alkali rare-earth…

find out more: KLi₂RE(BO₃)₂ (RE = Dy, Ho, Er, Tm, Yb, and Y): Structural, Spectroscopic, And Thermogravimetric Studies on a Series of Mixed-Alkali Rare-Earth Orthoborates

[Translate to English:]
X-Ray Diffraction|

Crystal structure and temperature-dependent properties of Na₂H₄Ga₂GeO₈ – a novel gallogermanate

Irma Peschke, Lars Robben, Christof Köhler, Thomas Frauenheim, Josef-Christian Buhl, Thorsten M. Gesing

Zeitschrift für Naturforschung B 75 (2020): 9-10

https://doi.org/10.1515/znb-2020-0159

Synthesis, crystal structure and temperature-dependent behavior of Na2H4Ga2GeO8 are reported. This novel…

find out more: Crystal structure and temperature-dependent properties of Na₂H₄Ga₂GeO₈ – a novel gallogermanate

Electron Microscopy Figure
Electron Microscopy|

Influence of plasmon excitations on atomic-resolution quantitative 4D scanning transmission electron microscopy

Andreas Beyer, Florian F. Krause, Hoel L. Robert, Saleh Firoozabadi, Tim Grieb, Pirmin Kükelhan, Damien Heimes, Marco Schowalter, Knut Müller-Caspary, Andreas Rosenauer, Kerstin Volz

Nature Scientific Reports 10 (2020): 17890

https://doi.org/10.1038/s41598-020-74434-w

Scanning transmission…

find out more: Influence of plasmon excitations on atomic-resolution quantitative 4D scanning transmission electron microscopy

science Figure
Materials Modelling|

Imaging strain-localized excitons in nanoscale bubbles of monolayer WSe₂ at room temperature

Thomas P. Darlington, Christian Carmesin, Matthias Florian, Emanuil Yanev, Obafunso Ajayi, Jenny Ardelean, Daniel A. Rhodes, Augusto Ghiotto, Andrey Krayev, Kenji Watanabe, Takashi Taniguchi, Jeffrey W. Kysar, Abhay N. Pasupathy, James C. Hone, Frank Jahnke, Nicholas J. Borys, P. James Schuck 

…

find out more: Imaging strain-localized excitons in nanoscale bubbles of monolayer WSe₂ at room temperature

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X-Ray Diffraction|

On the nature of the phase transitions of aluminosilicate perrhenate sodalite

Hilke Petersen, Lars Robben, Thorsten M. Gesing

Zeitschrift für Kristallographie - Crystalline Materials 235 (2020): 6-7

https://doi.org/10.1515/zkri-2020-0027

The temperature-dependent structure-property relationships of the aluminosilicate perrhenate sodalite |Na8(ReO4)2|[AlSiO4]6 (ReO4-SOD)…

find out more: On the nature of the phase transitions of aluminosilicate perrhenate sodalite

3D printing colloidal assembly
3D Materials Analytics|

Strong Macroscale Supercrystalline Structures by 3D Printing Combined with Self‐Assembly of Ceramic Functionalized Nanoparticles

Berta Domènech, Alvin T. L. Tan, Hans Jelitto, Eduardo Zegarra Berodt, Malte Blankenburg, Oliver Focke, Jaclyn Cann, C. Cem Tasan, Lucio Colombi Ciacchi, Martin Müller, Kaline P. Furlan, A. John Hart, Gerold A. Schneider

Advanced Engineering Materials 22 (2020): 2000352

…

find out more: Strong Macroscale Supercrystalline Structures by 3D Printing Combined with Self‐Assembly of Ceramic Functionalized Nanoparticles

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Spectroscopy|

Adsorption of sulfur on Si(111)

Th. Schmidt, L. Buß, M. Ewert, G. Schönhoff, T. Wehling. J. Falta

Surface Science 694 (2020): 121561

https://doi.org/10.1016/j.susc.2019.121561

The adsorption of S on Si(111)- 7  ×  7 has been investigated for different preparation schemes and parameters. S was supplied from an electrochemical Ag…

find out more: Adsorption of sulfur on Si(111)

3D Material Analyse
3D Materials Analytics|

Crystal surface reactivity analysis using a combined approach of X-ray micro-computed tomography and vertical scanning interferometry

Wolf-Achim Kahl, Tao Yuan, Till Bollermann, Wolfgang Bach, Cornelius Fischer

American Journal of Science 320 (2020): 27-52

doi: 10.2475/01.2020.03 

Dissolution rates of porous crystalline materials reflect the superposition of transport and surface control, mainly via the parameters saturation of…

find out more: Crystal surface reactivity analysis using a combined approach of X-ray micro-computed tomography and vertical scanning interferometry

2019


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Spectroscopy|

Controlling the Multiscale Structure of Nanofibrous Fibrinogen Scaffolds for Wound Healing

Karsten Stapelfeldt, Stephani Stamboroski, Irina Walter, Naiana Suter, Thomas Kowalik, Monika Michaelis and Dorothea Brüggemann

Nano Letters (2019) 19, 6554–6563

https://doi.org/10.1021/acs.nanolett.9b02798

As a key player in blood coagulation and tissue repair, fibrinogen has gained increasing…

find out more: Controlling the Multiscale Structure of Nanofibrous Fibrinogen Scaffolds for Wound Healing

Picture of A new test system for unraveling the effects of soil components on the uptake and toxicity of silver nanoparticles (NM-300K) in simulated pore water
3D Materials Analytics|

A new test system for unraveling the effects of soil components on the uptake and toxicity of silver nanoparticles (NM-300K) in simulated pore water

Moira S. McKee, Jan Köser, Oliver Focke, Juliane Filser

Science of The Total Environment (2019) 673, 13-621

https://doi.org/10.1016/j.scitotenv.2019.03.493

Fate, bioavailability and toxicity of silver nanoparticles (AgNP) are largely affected by soil properties. Here we focused on how these…

find out more: A new test system for unraveling the effects of soil components on the uptake and toxicity of silver nanoparticles (NM-300K) in simulated pore water

Starfish
3D Materials Analytics|

Morphology, shape variation and movement of skeletal elements in starfish (Asterias rubens)

Lena Schwertmann, Oliver Focke, Jan‐Henning Dirks

Journal of Anatomy (2019) 234, 656-667

https://doi.org/10.1111/joa.12964

Starfish (order: Asteroidea) possess a complex endoskeleton composed of thousands of calcareous ossicles. These ossicles are embedded in a body wall mostly consisting of a…

find out more: Morphology, shape variation and movement of skeletal elements in starfish (Asterias rubens)

picture
Electron Microscopy|

Electrical Polarization in AlN/GaN Nanodisks Measured by Momentum-Resolved 4D Scanning Transmission Electron Microscopy

Knut Müller-Caspary, Tim Grieb, Jan Müßener, Nicolas Gauquelin, Pascal Hille, Jörg Schörmann, Johan Verbeeck, Sandra Van Aert, Martin Eickhoff, Andreas Rosenauer

Physical Review Letters (2019) 122, 106102

https://doi.org/10.1103/PhysRevLett.122.106102

We report the mapping of polarization-induced…

find out more: Electrical Polarization in AlN/GaN Nanodisks Measured by Momentum-Resolved 4D Scanning Transmission Electron Microscopy

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Surface Analytics|

Kinetic concepts for quantitative prediction of fluid-solid interactions

Andreas Lüttge, Rolf S. Arvidson, Cornelius Fischer, Inna Kurganskaya

Chemical Geology (2019) 504, 216-235

https://doi.org/10.1016/j.chemgeo.2018.11.016

In a unique “perspectives” format that examines both past and future, we appraise the field of crystal dissolution kinetics, showing how the…

find out more: Kinetic concepts for quantitative prediction of fluid-solid interactions

picture
Electron Microscopy|

Influence of distortions of recorded diffraction patterns on strain analysis by nano-beam electron diffraction

Christoph Mahr, Knut Müller-Caspary, Robert Ritz, Martin Simson, Tim Grieb, Marco Schowalter, Florian F. Krause, Anastasia Lackmann, Heike Soltau, Arne Wittstock, Andreas Rosenauer

Ultramicroscopy (2019) 196, 74-82

Images acquired in transmission electron microscopes can be distorted for various…

find out more: Influence of distortions of recorded diffraction patterns on strain analysis by nano-beam electron diffraction

2018


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Surface Analytics|

Kinetics of pipeline steel corrosion studied by Raman spectroscopy-coupled vertical scanning interferometry

Janis Heuer & Andreas Lüttge 

npj Materials Degradation (2018) 2, 40

https://doi.org/10.1038/s41529-018-0061-2

The corrosion and degradation of materials, such as pipeline steel, have a strong effect on both the environment and the economy. The quantification of these processes can therefore…

find out more: Kinetics of pipeline steel corrosion studied by Raman spectroscopy-coupled vertical scanning interferometry

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X-Ray Diffraction|

Low-temperature anharmonicity and symmetry breaking in the sodalite |Na₈I₂|[AlSiO₄]₆

Lars Robben, Isaac Abrahams, Michael Fischer, Stephen Hull, Martin T. Dove und Thorsten M. Gesing

Zeitschrift für Kristallographie - Crystalline Materials (2018) 234, Heft 4

https://doi.org/10.1515/zkri-2018-2122

The aluminosilicate iodide sodalite |Na8I2|[AlSiO4]6 was examined by…

find out more: Low-temperature anharmonicity and symmetry breaking in the sodalite |Na₈I₂|[AlSiO₄]₆

3D Analytics Picture
3D Materials Analytics|

Textural evolution during high-pressure dehydration of serpentinite to peridotite and its relation to stress orientations and kinematics of subducting slabs: Insights from the Almirez ultramafic massif

Nicole Dilissen, Károly Hidas, Carlos J.Garrido, Wolf-Achim Kahl,Vicente López Sánchez-Vizcaíno, José Alberto Padrón-Navarta

Lithos (2018) 320-321, 470-489

https://doi.org/10.1016/j.lithos.2018.09.033

The Almirez ultramafic massif (SE Spain) preserves the transformation of high-P antigorite…

find out more: Textural evolution during high-pressure dehydration of serpentinite to peridotite and its relation to stress orientations and kinematics of subducting slabs: Insights from the Almirez ultramafic massif

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X-Ray Diffraction|

Temperature-dependent Structural and Spectroscopic Studies of (Bi₁₋ₓFeₓ)FeO₃

Andrea Kirsch, M. Mangir Murshed, Melanie J. Kirkham, Ashfia Huq, F. Jochen Litterst and Thorsten M. Gesing

The Journal of Physical Chemistry C (2018) 122 (49), 28280–28291

https://doi.org/10.1021/acs.jpcc.8b05740

We report on temperature-dependent structural and spectroscopic features of (Bi1–x…

find out more: Temperature-dependent Structural and Spectroscopic Studies of (Bi₁₋ₓFeₓ)FeO₃

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Surface Analytics|

Discrimination of Ceramic Surface Finishing by Vertical Scanning Interferometry

C. Ionescu, C. Fischer, V. Hoeck, A. Lüttge

Archaeometry (2019) 61

https://doi.org/10.1111/arcm.12410

Finishing techniques are significant markers of the technological ‘know‐how’ involved in the production of the traditional, clay‐based ceramic ware. In order to provide a reliable tool to…

find out more: Discrimination of Ceramic Surface Finishing by Vertical Scanning Interferometry

3D Material Picture
3D Materials Analytics|

Ambient occlusion – A powerful algorithm to segment shell and skeletal intrapores in computed tomography data

J.Titschack, D. Baum, K. Matsuyama, K. Boos, C. Färber, W.-A. Kahl, K. Ehrig, D. Meinel, C. Soriano, S.R. Stock

Computers & Geosciences (2018) 115, 75-87

https://doi.org/10.1016/j.cageo.2018.03.007

During the last decades, X-ray (micro-)computed tomography has gained increasing attention for the…

find out more: Ambient occlusion – A powerful algorithm to segment shell and skeletal intrapores in computed tomography data

Electron Microscopy Figures
Electron Microscopy|

Quantitative HAADF STEM of SiGe in presence of amorphous surface layers from FIB preparation

Tim Grieb, Moritz Tewes, Marco Schowalter, Knut Müller-Caspary, Florian F. Krause, Thorsten Mehrtens, Jean-Michel Hartmann, Andreas Rosenauer

Ultramicroscopy (2018) 184, 29-36

https://doi.org/10.1016/j.ultramic.2017.09.012

The chemical composition of four Si1-xGex layers grown on silicon was…

find out more: Quantitative HAADF STEM of SiGe in presence of amorphous surface layers from FIB preparation

2017


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X-Ray Diffraction|

Structural and spectroscopic comparison between polycrystalline, nanocrystalline and quantum dot visible light photo-catalyst Bi₂WO₆

Michael Teck, M. Mangir Murshed, Marco Schowalter, Niels Lefeld, Henrike K. Grossmann, Tim Grieb, Thomas Hartmann, Lars Robben, Andreas Rosenauer, Lutz Mädler, Thorsten M.Gesing

Journal of Solid State Chemistry (2017) 254, 82-89 

https://doi.org/10.1016/j.jssc.2017.07.013

The structural and…

find out more: Structural and spectroscopic comparison between polycrystalline, nanocrystalline and quantum dot visible light photo-catalyst Bi₂WO₆

Electron Microscopy Figure
Electron Microscopy|

Quantitative determination of residual silver distribution in nanoporous gold and its influence on structure and catalytic performance

Christoph Mahr, Paromita Kundu, Anastasia Lackmann, Daniele Zanaga, Karsten Thiel, Marco Schowalter, Martin Schwan, Sara Bals, Arne Wittstock, Andreas Rosenauer

Journal of Catalysis (2017) 352, 52-58

https://doi.org/10.1016/j.jcat.2017.05.002

Large efforts have been made trying to understand the…

find out more: Quantitative determination of residual silver distribution in nanoporous gold and its influence on structure and catalytic performance

3D Material picture
3D Materials Analytics|

Classical and new bioerosion trace fossils in Cretaceous belemnite guards characterised via micro-CT

Max Wisshak, Jürgen Titschack, Wolf-Achim Kahl, Peter Girod

Fossil Record (2017) 20, 173–199

doi:10.5194/fr-20-173-2017

The ongoing technical revolution in non-destructive 3-D visualisation via micro-computed tomography (micro-CT) finds a valuable application in the studies of bioerosion trace…

find out more: Classical and new bioerosion trace fossils in Cretaceous belemnite guards characterised via micro-CT

3D Material Picture
3D Materials Analytics|

3-D microstructure of olivine in complex geological materials reconstructed by correlative X-ray µ-CT and EBSD analyses

Kahl, W.-A., Dilissen, N., Hidas, K., Garrido, C. J., López-Sánchez-Vizcaíno, V. and Román-Alpiste, M. J.

Journal of microscopy (2017) 268, 193-207

https://doi.org/10.1111/jmi.12598

We reconstruct the 3‐D microstructure of centimetre‐sized olivine crystals in rocks from the Almirez ultramafic…

find out more: 3-D microstructure of olivine in complex geological materials reconstructed by correlative X-ray µ-CT and EBSD analyses

2016


3D Material Picture
3D Materials Analytics|

Reaction-induced porosity and onset of low-temperature carbonation in abyssal peridotites: insights from 3D high-resolution microtomography

Niels Jöns, Wolf-Achim Kahl, Wolfgang Bach

Lithos (2016) 268-271, 274-284.

https://doi.org/10.1016/j.lithos.2016.11.014

In a drillcore sample of serpentinized harzburgite from the uppermost oceanic crust (Mid-Atlantic Ridge, ODP Leg 209, Site 1270), we demonstrate using high-resolution…

find out more: Reaction-induced porosity and onset of low-temperature carbonation in abyssal peridotites: insights from 3D high-resolution microtomography

LEEm picture
Spectroscopy|

Growth and structure of ultrathin praseodymium oxide layers on ruthenium (0001)

Jan Höcker, Jon-Olaf Krisponeit, Julian Cambeis, Alexei Zakharov, Yuran Niu, Gang Wei, Lucio Colombi Ciacchi, Jens Falta, Andreas Schaefer and Jan Ingo Flege 

Physical Chemistry Chemical Physics (2017) 19, 3480-3485

https://doi.org/10.1039/C6CP06853G

The growth, morphology, structure, and…

find out more: Growth and structure of ultrathin praseodymium oxide layers on ruthenium (0001)

xps spectra
Spectroscopy|

Isotropic thin PTCDA films on GaN(0001)

C. Ahrens, J. I. Flege, C. Jaye, D. A. Fischer, T. Schmidt and J. Falta

Journal of Physics: Condensed Matter (2016) 28, 475003

https://doi.org/10.1088/0953-8984/28/47/475003

The growth of 3, 4, 9, 10-perylene tetracarboxylic dianhydride (PTCDA) on the Ga-polar GaN(0 0 0 1) surface has been…

find out more: Isotropic thin PTCDA films on GaN(0001)

3D Material Picture
3D Materials Analytics|

A new X-ray-transparent flow-through reaction cell for a μ-CT-based concomitant surveillance of the reaction progress of hydrothermal mineral–fluid interactions

Wolf-Achim Kahl, Christian Hansen, Wolfgang Bach

Solid Earth (2016) 7, 651-658

doi:10.5194/se-7-651-2016

A new flow-through reaction cell consisting of an X-ray-transparent semicrystalline thermoplastic has been developed for percolation experiments. Core holder, tubing and all confining parts…

find out more: A new X-ray-transparent flow-through reaction cell for a μ-CT-based concomitant surveillance of the reaction progress of hydrothermal mineral–fluid interactions
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