Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Alexander Tafel"'
Publikováno v:
Proceedings of the International Vacuum Nanoelectronics Conference
2021 34th International Vacuum Nanoelectronics Conference (IVNC)
2021 34th International Vacuum Nanoelectronics Conference (IVNC)
Lanthanum hexaboride (LaB 6 ) nanowire emitters have been demonstrated to work as monochromatic ultrabright field emitters. A small atomic array consisting of only a few La atoms at the foremost (100) facet generates a stark contrast of the surroundi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2978544a5fb48044cbaf85eacda41ee
Publikováno v:
Physical Review Letters. 123
We present femtosecond laser-induced electron emission from nanodiamond-coated tungsten tips. Based on the shortness of the femtosecond laser pulses, electrons can be photo-excited for wavelengths from the infrared (1932 nm) to the ultraviolet (235 n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01b5422949e8b9a5ea79074ac37f49f9
https://doi.org/10.1103/physrevlett.123.146802
https://doi.org/10.1103/physrevlett.123.146802
Coating metal nanotips with a negative electron affinity material like hydrogen-terminated diamond bears promise for a high brightness photocathode. We report a recipe on the fabrication of diamond coated tungsten tips. A tungsten wire is etched elec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ea5d39a4cc73c952599ac40369e02ca
http://arxiv.org/abs/1902.01369
http://arxiv.org/abs/1902.01369
Autor:
Simona Bettoni, Robert L. Byer, Ki Youl Yang, D. Hauenstein, Norbert Schönenberger, Uwe Niedermayer, Eduard Prat, Anna Mittelbach, Yen-Chieh Huang, X. Shen, Ingmar Hartl, Marco Calvi, Arya Fallahi, Micha Dehler, F. Frei, Frank Mayet, H. Xuan, Dylan S. Black, T. Langenstein, Huiyang Deng, Benjamin M. Cowan, Martin Kozák, Peyman Yousefi, Alexander Tafel, Pietro Musumeci, A. Ody, Y. Jiang, Si Tan, Yu Miao, Tyler W. Hughes, Peter Hommelhoff, A. Li, T. Hirano, D. Cesar, Olav Solgaard, Willi Kuropka, Eugenio Ferrari, Payton Broaddus, Moein Fakhari, R. J. England, Johannes Illmer, Csaba Lombosi, Jelena Vuckovic, Ralph Aßmann, Leonid Rivkin, E. Skär, James Rosenzweig, Francois Lemery, Andrew Ceballos, Y. J. Lee, Brian Naranjo, Franz X. Kärtner, J. Zhu, Thomas Feurer, Thilo Egenolf, Benedikt Hermann, Ulrich Dorda, James S. Harris, Minghao Qi, Huseyin Cankaya, Neil V. Sapra, Andreas Adelmann, Z. Huang, Oliver Boine-Frankenheim, Rasmus Ischebeck, Logan Su, J. McNeur, Barbara Marchetti, Evgenya Simakov, S. Fan, A. Pigott, N. Hiller, Roy Shiloh, Sven Reiche, Kenneth J. Leedle, Zhexin Zhao
Publikováno v:
International journal of modern physics / A 34(36), 1942031-(2019). doi:10.1142/S0217751X19420314
International journal of modern physics / A 34(36), 1942031 - (2019). doi:10.1142/S0217751X19420314
Dielectric Laser Acceleration (DLA) achieves the highest gradients among structure-based electron accelerators. The use of dielectrics increases
Dielectric Laser Acceleration (DLA) achieves the highest gradients among structure-based electron accelerators. The use of dielectrics increases
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0da0bb1cb1360ce075c9f40d2e8e7ea
Publikováno v:
Microscopy and Microanalysis. 25:74-75
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3db3e035bad9e9cec30f108a8f698c3d
https://doi.org/10.1017/s1431927619001107
https://doi.org/10.1017/s1431927619001107
Autor:
Sebastian Bochmann, Loïc Assaud, Silke Christiansen, Alexander Tafel, Julien Bachmann, Johannes Schumacher
Publikováno v:
Journal of Materials Chemistry A. 3:8450-8458
We establish a procedure for the fabrication of electrocatalytically active, nanoporous surfaces coated with Pt and exhibiting a high geometric area. Firstly, the mechanism of the surface reactions between platinum(II) acetylacetonate and ozone is in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f1ad72322c112641c3eabc3f3055a19
https://doi.org/10.1039/c5ta00205b
https://doi.org/10.1039/c5ta00205b
Publikováno v:
Applied Physics Letters. 114:013101
Differential phase contrast in scanning transmission electron microscopy has been applied to image nanoscale electrostatic fields of a sharp tungsten electron emitter with an apex radius of about 20 nm and under field emission conditions. Assuming ax
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c11393200ddb04c10640b7d561bac399
https://doi.org/10.1063/1.5055227
https://doi.org/10.1063/1.5055227
Autor:
Michael Seidling, Jonas Heimerl, Philipp Weber, Constanze Sturm, Robert Zimmermann, Norbert Schönenberger, Peyman Yousefi, Timo Eckstein, Takuya Higuchi, Johannes Illmer, Martin Hundhausen, Philip Dienstbier, Jürgen Ristein, Timo Paschen, Ang Li, Christian Heide, Anna Mittelbach, Stefan Meier, Roy Shiloh, Alexander Tafel, Joshua McNeur, Martin Kozák, Peter Hommelhoff
Publikováno v:
EPJ Web of Conferences, Vol 205, p 08009 (2019)
New ways of controlling quasi-free and free electrons by means of phase-controlled ultrashort laser pulses are demonstrated: from strong-field physics in the conducting 2-d material graphene and at the surface of nanostructures, to laser acceleration
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e005adf83eb5fde6a7998499146e1882
https://doi.org/10.1051/epjconf/201920508009
https://doi.org/10.1051/epjconf/201920508009
Publikováno v:
Advanced Accelerators Concepts (AAC 2014)
AIP Conference Proceedings
AIP Conference Proceedings
The recent demonstration of Dielectric Laser Acceleration of subrelativistic electrons is reviewed. In this experiment, a Ti:Sapphire laser is incident upon a fused silica grating, exciting fields that accelerated 28 keV electrons with a 25 MeV/m acc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebb7bcd1a437d1589dcfb4bf6fe1a27b
http://aip.scitation.org/doi/abs/10.1063/1.4965635
http://aip.scitation.org/doi/abs/10.1063/1.4965635
Autor:
Norbert Schönenberger, Martin Kozák, Johannes Illmer, Peter Hommelhoff, Joshua McNeur, Alexander Tafel, Timo Eckstein, Ang Li, Peyman Yousefi
Publikováno v:
Journal of Applied Physics. 124:023104
In this paper, we describe an ultrafast scanning electron microscope setup developed for the research of inelastic scattering of electrons at optical near-fields of periodic dielectric nanostructures. Electron emission from the Schottky cathode is co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2dc5e546b0a3644549ee2da7d30c712
https://doi.org/10.1063/1.5032093
https://doi.org/10.1063/1.5032093