K
Ken Onda
Researcher at Kyushu University
Publications - 146
Citations - 3333
Ken Onda is an academic researcher from Kyushu University. The author has contributed to research in topics: Excited state & Phase transition. The author has an hindex of 27, co-authored 143 publications receiving 2970 citations. Previous affiliations of Ken Onda include Tokyo Institute of Technology & Florida State University College of Arts and Sciences.
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Femtosecond imaging of surface plasmon dynamics in a nanostructured silver film
TL;DR: The imaging and quantum control of SP dynamics in a nanostructured silver film is demonstrated by inducing and imaging the nonlinear two-photon photoemission from the sample with a pair of identical 10-fs laser pulses while scanning the pulse delay.
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Mapping molecular motions leading to charge delocalization with ultrabright electrons
Meng Gao,Meng Gao,Cheng Lu,Hubert Jean-Ruel,Hubert Jean-Ruel,Lai Chung Liu,Lai Chung Liu,Alexander Marx,Ken Onda,Ken Onda,Shin-ya Koshihara,Yoshiaki Nakano,Xiangfeng Shao,Takaaki Hiramatsu,Gunzi Saito,Hideki Yamochi,Ryan R. Cooney,Ryan R. Cooney,Gustavo Moriena,Gustavo Moriena,Germán Sciaini,Germán Sciaini,R. J. Dwayne Miller,R. J. Dwayne Miller +23 more
TL;DR: An ultrabright femtosecond electron source is used to monitor the molecular motions in the organic salt (EDO-TTF)2PF6 as it undergoes its photo-induced insulator-to-metal phase transition as discussed by the authors.
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Wet electrons at the H2O/TiO2(110) surface.
TL;DR: Density functional theory shows an unoccupied electronic state 2.4 electron volts above the Fermi level at the H2O/TiO2(110) interface to be a wet-electron state analogous to that reported in water clusters and which is distinct from hydrated electrons observed on water-covered metal surfaces.
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Two-photon photoemission spectroscopy of Ti O 2 ( 110 ) surfaces modified by defects and O 2 or H 2 O adsorbates
Ken Onda,Bin Li,Hrvoje Petek +2 more
TL;DR: In this article, 2PP spectroscopy is used to systematically investigate the work function change due to the presence of defects or adsorbates, and they find that the surface defects are substantially different from those created by annealing or ion sputtering where vacancies in the subsurface region are proposed.
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Ultrafast interfacial proton-coupled electron transfer.
TL;DR: By using femtosecond laser excitation, electrons are transferred from a rutile titanium dioxide surface into a CH3OH overlayer state that is 2.3 ± 0.2 electron volts above the Fermi level.