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Spectroscopy Highlights

Electron Microscopy| Spectroscopy|

Using convolutional neural networks for stereological characterization of 3D hetero-aggregates based on synthetic STEM data

Luke Fox; Tom Kirstein; Christoph Mahr; Orkun Furat; Valentin Baric; Andreas Rosenauer2; Lutz Mädler; Volker Schmidt

Machine Learning: Science and Technology, 5   (2024) 025007

https://doi.org/10.1088/2632-2153/ad38fd

The 3D nano/microstructure of materials can significantly influence their…

Spectroscopy| Electron Microscopy|

GaN atomic electric fields from a segmented STEM detector: Experiment and simulation

Tim Grieb; Florian F. Krause; Thorsten Mehrtens; Christoph Mahr; Beeke Gerken; Marco Schowalter; Bert Freitag; Andreas Rosenauer

Journal of Microscopy   (2024)

https://doi.org/10.1111/jmi.13276

Atomic electric fields in a thin GaN sample are measured with the centre-of-mass approach in…

3D Materials Analytics| Spectroscopy|

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 (2023), 123, 213504

https://doi.org/10.1063/5.0170354

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

Figure from the paper of Guo et al.
© 2023 The authors. Advanced Engineering Materials published by Wiley-VCH GmbH
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 (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…

Figure from the publication
© The Author(s) 2023
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 27 (2023)

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

The influence of self-assembled…

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© Reprinted with permission from ACS Appl. Nano Mater. 2022, 5, 12, 17702–17710. Copyright 2022 American Chemical Society.
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. 2022, 5, 12, 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…

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© © 2022 The Authors. Zeitschrift für anorganische und allgemeine Chemie published by Wiley-VCH GmbH
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. 2022, 648, 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…

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© Reprinted with permission from the Journal of Physical Chemistry C 2022 126 (45), 19101-19112. Copyright 2022 American Chemical Society.
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 2022, 126, 45, 19101–19112

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

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

picture
© https://doi.org/10.1007/s10853-022-07854-w, CC BY 4.0
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 (2022), 57, 19280-19299

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

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

XRM
© Wolf-Achim Kahl
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 (2022) 107 (9): 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…

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© 2022 The Authors. Published by Elsevier Ltd on behalf of European Ceramic Society.
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 (2022), 9, 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…

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© 2021 The Authors. Journal of the American Ceramic Society published by Wiley Periodicals LLC on behalf of American Ceramic Society
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…

X-Ray Diffraction| Spectroscopy|

Thermal anomalies and phase transitions in Pb2Sc2Si2O9 and Pb2In2Si2O9

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

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

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

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

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© Copyright © 2021 The Authors. Published by American Chemical Society
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, and Ronald Imbihl

Journal of Physical Chemistry C (2021), 125, 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…

Eine kreisrunde Fläche aufgefächert
© 2020 Nature Scientific Reports
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 (2020) 10, 22374

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

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

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© Copyright 2020 American Chemical Society
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, and Thorsten M. Gesing

Inorg. Chem (2020), 59, 24, 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…

Spectroscopy|

Adsorption of sulfur on Si(111)

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

Surface Science (2020), 694, 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…

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…

LEEm picture
© 2017 Physical Chemistry Chemical Physics
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…

xps spectra
© Jens Falta / Universität Bremen
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…

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