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pro vyhledávání: '"Wittwer, Felix"'
Autor:
Khaliq, Ahmar, Wittwer, Felix, Pyrlik, Niklas, Fevola, Giovanni, Patjens, Svenja, Barp, Jackson, Falkenberg, Gero, Hampel, Sven, Stuckelberger, Michael, Garrevoet, Jan, Bruckner, Dennis, Modregger, Peter
4H Silicon Carbide (4H-SiC) combines many attractive properties such as a high carrier mobility, a wide bandgap, and a high thermal conductivity, making it an ideal candidate for high-power electronic devices. However, a primary challenge in utilizin
Externí odkaz:
http://arxiv.org/abs/2409.00200
Autor:
Wittwer, Felix, Modregger, Peter
High-resolution x-ray microscopy requires a high photon flux to measure the signal from weakly scattering samples. This exposes samples to high radiation doses, potentially damaging or destroying them through radiation damage. In this work, we propos
Externí odkaz:
http://arxiv.org/abs/2409.00166
While a few methods for the determination of depth-resolved strain distributions each with inherent limitations are available, tomographic reconstruction has been applied to this problem in only a limited sense. One of the challenges was the potentia
Externí odkaz:
http://arxiv.org/abs/2409.00157
Autor:
Wittwer, Felix, Modregger, Peter
X-ray ptychography utilizes overlapping illuminations to reconstruct the object's phase and absorption signal with spatial resolutions much smaller than the focus size. Usually, the illumination overlap is chosen to be between 50% and 60% in order to
Externí odkaz:
http://arxiv.org/abs/2207.13760
Autor:
Wittwer, Felix, Modregger, Peter
X-ray ptychography is a cutting edge imaging technique providing ultra-high spatial resolutions. In ptychography, phase retrieval, i.e., the recovery of a complex valued signal from intensity-only measurements, is enabled by exploiting a redundancy o
Externí odkaz:
http://arxiv.org/abs/2205.11996
Autor:
Wittwer, Felix, Sauter, Nicholas K., Mendez, Derek, Poon, Billy K., Brewster, Aaron S., Holton, James M., Wall, Michael E., Hart, William E., Bard, Deborah J., Blaschke, Johannes P.
The upcoming exascale computing systems Frontier and Aurora will draw much of their computing power from GPU accelerators. The hardware for these systems will be provided by AMD and Intel, respectively, each supporting their own GPU programming model
Externí odkaz:
http://arxiv.org/abs/2205.07976
Autor:
Lyubomirskiy, Mikhail, Koch, Frieder, Abrashitova, Ksenia, Bessonov, Vladimir, Kokareva, Natalia, Petrov, Alexander, Seiboth, Frank, Wittwer, Felix, Kahnt, Maik, Fedyanin, Martin Seyrich Andrey, David, Christian, Schroer, Christian
The recent success in the development of high precision printing techniques allows one to manufacture free-standing polymer structures of high quality. Two-photon polymerization lithography is a mask-less technique with down to 100 {\mu}m resolution
Externí odkaz:
http://arxiv.org/abs/1812.05897
Autor:
Walker, Trumann, Stuckelberger, Michael E., Nietzold, Tara, Mohan-Kumar, Niranjana, Ossig, Christina, Kahnt, Maik, Wittwer, Felix, Lai, Barry, Salomon, Damien, Colegrove, Eric, Bertoni, Mariana I.
Publikováno v:
In Nano Energy January 2022 91
Akademický článek
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Autor:
Lyubomirskiy, Mikhail1 (AUTHOR) mikhail.lyubomirskiy@desy.de, Wittwer, Felix1,2,3 (AUTHOR), Kahnt, Maik4 (AUTHOR), Koch, Frieder5,6 (AUTHOR), Kubec, Adam5,7 (AUTHOR), Falch, Ken Vidar1 (AUTHOR), Garrevoet, Jan1 (AUTHOR), Seyrich, Martin1,2 (AUTHOR), David, Christian5 (AUTHOR), Schroer, Christian G.1,2,8 (AUTHOR)
Publikováno v:
Scientific Reports. 4/13/2022, Vol. 12 Issue 1, p1-9. 9p.