Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Nobuyuki Ohya"'
Autor:
Takeshi Okamoto, Hideyuki Uehigashi, Takahiro Kanda, Nobuyuki Ohya, Akiyoshi Horiai, Soma Sakakibara, Takashi Kanemura, Kiyoshi Betsuyaku, Norihiro Hoshino, Isaho Kamata, Hidekazu Tsuchida
Publikováno v:
Solid State Phenomena. 342:105-112
To reduce manufacturing costs, high-quality 150 mm 4H-SiC wafers were grown at over 1.5 mm/h by high-temperature chemical vapor deposition. The dislocations in the initial growth stage did not increase compared with those in the seed crystal. The dis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6146bf83dc3de382ad5bbe70a5a0ece6
https://doi.org/10.4028/p-09h52t
https://doi.org/10.4028/p-09h52t
Autor:
Okamoto Takeshi, Nobuyuki Ohya, Norihiro Hoshino, Hideyuki Uehigashi, Takahiro Kanda, Isaho Kamata, Hidekazu Tsuchida, Hironari Kuno, Yuichiro Tokuda
Publikováno v:
Materials Science Forum. 1004:5-13
The process conditions for fast growth of 4 in. 4H-polytype SiC (4H-SiC) single crystals were studied for high-temperature gas source method. Prior to experiments, crystal growth simulations were conducted to investigate the influence of vertical gas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1968cfe69c30bc31e76e99ecca38fff9
https://doi.org/10.4028/www.scientific.net/msf.1004.5
https://doi.org/10.4028/www.scientific.net/msf.1004.5
Autor:
Nobuyuki Ohya, Koichiro Suekuni, Koji Akai, Setsuo Yamamoto, Y. Saiga, Toshiro Takabatake, Yasushi Kono
Publikováno v:
MATERIALS TRANSACTIONS. 53:636-640
The type-VIII clathrate Ba8Ga16Sn30 shows a high figure of merit (ZT) in the middle temperature range 470–670 K. ZT enhancement through Sb doping has recently been reported in p-type Ba8Ga16Sn30. In this study, calculations to determine the electro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8301fb5415c66319bc5d0a00612658f4
https://doi.org/10.2320/matertrans.e-m2012807
https://doi.org/10.2320/matertrans.e-m2012807
Autor:
Setsuo Yamamoto, Toshiro Takabatake, Koji Akai, Y. Saiga, Koichiro Suekuni, Nobuyuki Ohya, Yasushi Kono
Publikováno v:
Journal of Electronic Materials. 40:845-850
The type VIII clathrate Ba8Ga16Sn30 has a relatively high figure of merit (ZT) from 200°C to 400°C. Our previous calculations showed that the optimum carrier concentration for high ZT is on the order of 1020/cm3 for both p- and n-type samples. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b35fe0e92fb0201a323b3504ccd50c32
https://doi.org/10.1007/s11664-011-1590-4
https://doi.org/10.1007/s11664-011-1590-4
Autor:
Y. Kono, Shukang Deng, Y. Saiga, Nobuyuki Ohya, Koichiro Suekuni, Toshiro Takabatake, Tatsuya Yamamoto
Publikováno v:
Journal of Alloys and Compounds. 507:1-5
Single crystals of type-VIII clathrate Ba 8 Ga 16 Sn 30 (BGS) with p- and n-type carriers were grown from Ga flux and Sn flux, respectively. With the increase of the initial flux amount, both the electrical resistivity ρ and the absolute value of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::577c322b29c16e3dd7bc130ab32e0ca8
https://doi.org/10.1016/j.jallcom.2010.07.121
https://doi.org/10.1016/j.jallcom.2010.07.121
Publikováno v:
Sensors and Actuators A: Physical. 70:92-97
A dynamic focusing lens with a completely new mechanism that can be miniaturized and allows for a quick-response has been developed. This lens is structured to directly transform the lens shape as a crystalline lens of the human eye. The lens is comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79380d8ea83b8b3a14b2646d8209fd42
https://doi.org/10.1016/s0924-4247(98)00119-8
https://doi.org/10.1016/s0924-4247(98)00119-8
Publikováno v:
IEEJ Transactions on Sensors and Micromachines. 118:364-370
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57c1b8f0791220f68fbc2759e2d717bf
https://doi.org/10.1541/ieejsmas.118.364
https://doi.org/10.1541/ieejsmas.118.364
Publikováno v:
Sensors and Actuators A: Physical. 54:760-764
Two types of Bending and expanding motion actuators which are composed of multi-layered PZT unimorph cells have been developed. Each cell's electrode is divided into three sectors and the facing sectors are connected to one another. Multi-directional
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f484f3e3d35b0d25f7b01c4d36d8619
https://doi.org/10.1016/s0924-4247(97)80053-2
https://doi.org/10.1016/s0924-4247(97)80053-2
Publikováno v:
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C. 62:3116-3123
A new multi directional bending and expanding motion actuator for a microsystem is proposed, and the static and dynamic experimental results are reported. This flexible actuator is composed of multi layered PZT unimorph cells. These cells are arrange
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d55ab1b5ae05aec83b6b2bd767117c0
https://doi.org/10.1299/kikaic.62.3116
https://doi.org/10.1299/kikaic.62.3116
Autor:
Tatsuya Yamamoto, Y. Saiga, Toshiro Takabatake, Nobuyuki Ohya, Shukang Deng, Y. Kono, Koichiro Suekuni
Publikováno v:
ChemInform. 41
Single crystals of the title material are prepared by the self-flux method tuning the charge carrier type to either p- or n-type by using Ga or Sn as flux, respectively.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65b5a5caacc8a45787e61deb1c479e1c
https://doi.org/10.1002/chin.201046006
https://doi.org/10.1002/chin.201046006