Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Kazuya Motoki"'
Publikováno v:
2016 IEEE International Ultrasonics Symposium (IUS).
An ASIC-integrated probe generates large amount of heat compared to that of a conventional probe. That causes to increase surface temperature and to degrade ultrasound diagnostic images in order not to exceed the temperature limits determined by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d31286637f256a394d1d2beb37f9a47e
https://doi.org/10.1109/ultsym.2016.7728376
https://doi.org/10.1109/ultsym.2016.7728376
Autor:
Kazuya Motoki, Watanabe Toru
Publikováno v:
2014 IEEE International Ultrasonics Symposium.
ASICs-embedded probes have received more attention due to their many advantages over conventional ultrasound probes. However, these state-of-the art probes generate large amount of heat from ASICs, compared to heat arisen from transducers. In additio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79a6f6fc3895820eaeff26f2e692e66e
https://doi.org/10.1109/ultsym.2014.0382
https://doi.org/10.1109/ultsym.2014.0382
Autor:
Tomohiro Nishitani, Masao Tabuchi, Yoshikazu Takeda, Yuji Suzuki, Kazuya Motoki, Takashi Meguro, Donald G. Crabb, Yelena Prok, Matt Poelker, Simonetta Liuti, Donal B. Day, Xiaochao Zheng
Publikováno v:
AIP Conference Proceedings.
We have suggested that a small momentum spread of photoelectrons and high quantum efficiency can be obtained concurrently by a photocathode using a semiconductor with a superlattice instead of a bulk. We have begun to search for the suitable semicond
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43e8c8e3bdc763db9169314412c11352
https://doi.org/10.1063/1.3215590
https://doi.org/10.1063/1.3215590
Publikováno v:
Journal of Physics: Conference Series. 298:012010
We have suggested using a superlattice semiconductor instead of a bulk semiconductor as an NEA-photocathode for small emittance and high quantum yield because the mini-band energy width and high joint density of states at the bottom of the conduction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d0476ab8809766675bca71b8f5e4259
https://doi.org/10.1088/1742-6596/298/1/012010
https://doi.org/10.1088/1742-6596/298/1/012010
Autor:
Tomohiro Nishitani, Kazuya Motoki, Takashi Meguro, Yuji Suzuki, Masao Tabuchi, Yoshikazu Takeda
Publikováno v:
Japanese Journal of Applied Physics. 48:06FF02
We developed AlGaAs photocathodes with low electron affinity for long negative electron affinity (NEA) lifetime. AlGaAs photocathodes achieved 10 times longer NEA lifetime than conventional NEA-GaAs photocathodes. We estimated the appropriate superla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4527684cb188f8e6bf8f649c4a4c608f
https://doi.org/10.1143/jjap.48.06ff02
https://doi.org/10.1143/jjap.48.06ff02