Zobrazeno 1 - 10
of 407
pro vyhledávání: '"Andreas, Rosenauer"'
Autor:
Christoph Mahr, Jakob Stahl, Beeke Gerken, Valentin Baric, Max Frei, Florian F. Krause, Tim Grieb, Marco Schowalter, Thorsten Mehrtens, Einar Kruis, Lutz Mädler, Andreas Rosenauer
Publikováno v:
Nano Select, Vol 5, Iss 4, Pp n/a-n/a (2024)
Abstract Formation of hetero‐contacts between particles of different materials in nanoparticle hetero‐aggregates can lead to new functional properties. Improvement of the functional behavior requires a detailed characterization of mixing between
Externí odkaz:
https://doaj.org/article/bb5f6c734fc04ee5ab2b8e90a9c1c3a9
Autor:
Martin S. Williams, Manuel Alonso-Orts, Marco Schowalter, Alexander Karg, Sushma Raghuvansy, Jon P. McCandless, Debdeep Jena, Andreas Rosenauer, Martin Eickhoff, Patrick Vogt
Publikováno v:
APL Materials, Vol 12, Iss 1, Pp 011120-011120-10 (2024)
The growth of α-Ga2O3 and α-(InxGa1−x)2O3 on m-plane α-Al2O3(101̄0) by molecular beam epitaxy (MBE) and metal-oxide-catalyzed epitaxy (MOCATAXY) is investigated. By systematically exploring the parameter space accessed by MBE and MOCATAXY, phas
Externí odkaz:
https://doaj.org/article/a2c71875ecf049b0960eae6d9ef3b1fd
Autor:
Sushma Raghuvansy, Jon P. McCandless, Marco Schowalter, Alexander Karg, Manuel Alonso-Orts, Martin S. Williams, Christian Tessarek, Stephan Figge, Kazuki Nomoto, Huili Grace Xing, Darrell G. Schlom, Andreas Rosenauer, Debdeep Jena, Martin Eickhoff, Patrick Vogt
Publikováno v:
APL Materials, Vol 12, Iss 1, Pp 019902-019902-2 (2024)
Externí odkaz:
https://doaj.org/article/1f93b8c165814eefbab42bae4052ab4d
Autor:
Sushma Raghuvansy, Jon P. McCandless, Marco Schowalter, Alexander Karg, Manuel Alonso-Orts, Martin S. Williams, Christian Tessarek, Stephan Figge, Kazuki Nomoto, Huili Grace Xing, Darrell G. Schlom, Andreas Rosenauer, Debdeep Jena, Martin Eickhoff, Patrick Vogt
Publikováno v:
APL Materials, Vol 11, Iss 11, Pp 111113-111113-9 (2023)
The heteroepitaxial growth and phase formation of Ga2O3 on Al-polar AlN(0001) templates by molecular-beam epitaxy (MBE) are studied. Three different MBE approaches are employed: (i) conventional MBE, (ii) suboxide MBE (S-MBE), and (iii) metal-oxide-c
Externí odkaz:
https://doaj.org/article/55fc387ea21341fa85b9ac3f654ec8b4
Autor:
Lukas Fuchs, Tom Kirstein, Christoph Mahr, Orkun Furat, Valentin Baric, Andreas Rosenauer, Lutz Mädler, Volker Schmidt
Publikováno v:
Machine Learning: Science and Technology, Vol 5, Iss 2, p 025007 (2024)
The 3D nano/microstructure of materials can significantly influence their macroscopic properties. In order to enable a better understanding of such structure-property relationships, 3D microscopy techniques can be deployed, which are however often ex
Externí odkaz:
https://doaj.org/article/ef6d09e38bf3447db9d7766275a64809
Autor:
Alexander Karg, Alexander Hinz, Stephan Figge, Marco Schowalter, Patrick Vogt, Andreas Rosenauer, Martin Eickhoff
Publikováno v:
APL Materials, Vol 11, Iss 9, Pp 091114-091114-9 (2023)
The influence of In on the growth of ɛ-Ga2O3 by plasma-assisted molecular beam epitaxy is investigated. We demonstrate alloying of ɛ-Ga2O3 with In and describe its incorporation limits and catalytic effect on the growth kinetics. A special focus li
Externí odkaz:
https://doaj.org/article/9e6621618ee34c54908556040014bac2
Autor:
Christoph Mahr, Jorge Adrian Tapia Burgos, Marco Schowalter, Arne Wittstock, Andreas Rosenauer
Publikováno v:
Materials Research Letters, Vol 10, Iss 12, Pp 824-831 (2022)
Nanoporous gold as obtained by corrosion of alloys of gold and a less noble metal is a system with manifold applications. The process of dealloying, however, can result in partially porous samples, when dealloying conditions are not optimized with re
Externí odkaz:
https://doaj.org/article/15e739e7f611495faf70843465ae75cc
Autor:
Daniel Loof, Oliver Thüringer, Dr. Marco Schowalter, Dr. Christoph Mahr, Anmona Shabnam Pranti, Prof. Dr. Walter Lang, Prof. Dr. Andreas Rosenauer, Dr. Volkmar Zielasek, Dr. Sebastian Kunz, Prof. Dr. Marcus Bäumer
Publikováno v:
ChemistryOpen, Vol 10, Iss 7, Pp 697-712 (2021)
Abstract Porous networks of Pt nanoparticles interlinked by bifunctional organic ligands have shown high potential as catalysts in micro‐machined hydrogen gas sensors. By varying the ligand among p‐phenylenediamine, benzidine, 4,4‘‘‐diamino
Externí odkaz:
https://doaj.org/article/830bc35cb02b4d10a9712c48c68b54bb
Nanoporous Gold: From Structure Evolution to Functional Properties in Catalysis and Electrochemistry
Autor:
Gunther Wittstock, Marcus Bäumer, Wilke Dononelli, Thorsten Klüner, Lukas Lührs, Christoph Mahr, Lyudmila V. Moskaleva, Mehtap Oezaslan, Thomas Risse, Andreas Rosenauer, Anne Staubitz, Jörg Weissmüller, Arne Wittstock
Publikováno v:
Chemical Reviews. 123:6716-6792
Nanoporous gold (NPG) is characterized by a bicontinuous network of nanometer-sized metallic struts and interconnected pores formed spontaneously by oxidative dissolution of the less noble element from gold alloys. The resulting material exhibits dec
Autor:
Achim Strauch, Benjamin März, Thibaud Denneulin, Mauricio Cattaneo, Andreas Rosenauer, Knut Müller-Caspary
Publikováno v:
Microscopy and microanalysis 29(2), 499-511 (2023). doi:10.1093/micmic/ozad016
When using the unit cell average of first moment data from four-dimensional scanning transmission electron microscopy (4D-STEM) to characterize ferroelectric materials, a variety of sources of systematic errors needs to be taken into account. In part