Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Takashi Senga"'
Autor:
Takafumi Hayashi, Yuta Kawase, Noriaki Nagata, Takashi Senga, Sho Iwayama, Motoaki Iwaya, Tetsuya Takeuchi, Satoshi Kamiyama, Isamu Akasaki, Takahiro Matsumoto
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-5 (2017)
Abstract This study investigated electron beam laser excitation in the UV region using a GaN/AlGaN multiquantum well (MQW) active layer. Laser emission was observed when the GaN/AlGaN MQW was excited by an electron beam, with a wavelength of approxim
Externí odkaz:
https://doaj.org/article/5d1a474184ad40c3884eef852916023a
Autor:
Satoshi Kamiyama, Motoaki Iwaya, Takashi Senga, Takahiro Matsumoto, Takafumi Hayashi, Isamu Akasaki, Tetsuya Takeuchi, Noriaki Nagata, Sho Iwayama
Publikováno v:
Gallium Nitride Materials and Devices XII.
The UV semiconductor-based laser sources are important for a variety of fields, including medical, mechanical processing, chemical processing, biology, and photonics. However, the development of UV-B and UV-C laser diodes is strongly hampered because
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56667c4f19a6ad7cd4d66885670b263c
https://doi.org/10.1117/12.2254255
https://doi.org/10.1117/12.2254255
Autor:
Yuta Kawase, Takafumi Hayashi, Sho Iwayama, Tetsuya Takeuchi, Motoaki Iwaya, Noriaki Nagata, Satoshi Kamiyama, Takashi Senga, Isamu Akasaki, Takahiro Matsumoto
Publikováno v:
Scientific Reports
Scientific Reports, Vol 7, Iss 1, Pp 1-5 (2017)
Scientific Reports, Vol 7, Iss 1, Pp 1-5 (2017)
This study investigated electron beam laser excitation in the UV region using a GaN/AlGaN multiquantum well (MQW) active layer. Laser emission was observed when the GaN/AlGaN MQW was excited by an electron beam, with a wavelength of approximately 353
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e5ce7fa4440e634bbf04673be480ff2
https://pubmed.ncbi.nlm.nih.gov/28592833
https://pubmed.ncbi.nlm.nih.gov/28592833
Autor:
Takashi Senga, Isamu Akasaki, Tetsuya Takeuchi, Noriaki Nagata, Satoshi Kamiyama, Motoaki Iwaya
Publikováno v:
physica status solidi (c).
We found out the reduction of contact resistance in V-based electrode for high AlN molar fraction n-type AlGaN by using thin SiNx intermediate layer. The contact resistivity for n -type Al0.70Ga0.30N with the V/Al/Ni/Au electrode using SiNx intermedi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0911a0b7ef66c7c53c899459698c0f47
https://doi.org/10.1002/pssc.201600243
https://doi.org/10.1002/pssc.201600243
Publikováno v:
Solid State Phenomena. 194:183-186
The formation of Pd-Ni-P and Pd-Ni-Cu-P metallic glass films using the electrodeposition method was examined. In this study, the structure and composition of these metallic alloys were investigated at various condition of electrodeposition. The X-ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9768ded89e2ffec6d6da704ad59cfe5d
https://doi.org/10.4028/www.scientific.net/ssp.194.183
https://doi.org/10.4028/www.scientific.net/ssp.194.183
Publikováno v:
Electrochemistry. 79:249-251
In the present study, the electrodeposition of Pd-Ni-P metallic glass films has been investigated. The composition of the electrodeposited Pd-Ni-P films were controlled by adjusting the current density from 0.2 A dm−2 to 2.5 A dm−2. The results o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e103a0d7ea2c3dd29a3838e78e60cc1
https://doi.org/10.5796/electrochemistry.79.249
https://doi.org/10.5796/electrochemistry.79.249
Autor:
Motoaki Iwaya, Satoshi Kamiyama, T. Takeuchi, Isamu Akasaki, Takashi Senga, Takafumi Hayashi, Sho Iwayama, Takahiro Matsumoto, Noriaki Nagata
Publikováno v:
Applied Physics Express. 9:129201
In this study, an electron beam excitation laser using a GaInN-based multiquantum well (MQW) active layer was investigated, and laser emission was observed for the first time from a GaInN-based MQW excited by an electron beam. This technology has the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4742049445cd4255c43a94c3229566d1
https://doi.org/10.7567/apex.9.129201
https://doi.org/10.7567/apex.9.129201
Autor:
Takafumi Hayashi, Motoaki Iwaya, Takahiro Matsumoto, Takashi Senga, T. Takeuchi, Noriaki Nagata, Sho Iwayama, Satoshi Kamiyama, Isamu Akasaki
Publikováno v:
Applied Physics Express. 9:101001
In this study, an electron beam excitation laser using a GaInN-based multiquantum well (MQW) active layer was investigated, and laser emission was observed for the first time from a GaInN-based MQW excited by an electron beam. This technology has the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64d9daf10b01738d6a5f1be9da865ba6
https://doi.org/10.7567/apex.9.101001
https://doi.org/10.7567/apex.9.101001
Autor:
Satoshi Hachimura, Etsuko Toda, Takashi Senga, Tsuyoshi Takayama, Toshiko Somaya, Shuichi Hashizume, Masaaki Hashiguchi, Shuichi Kaminogawa, Kastumi Sasaki, Masanobu Hibi
Publikováno v:
Cytotechnology. 43(1-3)
While it is well-known that orally fed antigens induce systemic T cell tolerance (oral tolerance), the mechanism by which this occurs, however, remains unclear. In the present study, we examined the role of splenic dendritic cells (DCs) in the proces
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fc391d039dfc673ad7e2d4c820c9c0d
https://pubmed.ncbi.nlm.nih.gov/19003206
https://pubmed.ncbi.nlm.nih.gov/19003206
Autor:
Satoshi Hachimura, Ayuko Sato, Shuichi Kaminogawa, Kastumi Sasaki, Tsuyoshi Takayama, Mamoru Totsuka, Wataru Ise, Shuichi Hashizume, Masanobu Hibi, Tadashi Yoshida, Takashi Senga
Dendritic cells (DCs) as antigen presenting cells can stimulate naive CD4(+) T cells and initiate the primary immune response which controls Th1/Th2 development. It has been suggested that DCs derived from different tissues have distinct properties.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f56538c065b24da51915de7aa8ffba18
https://europepmc.org/articles/PMC3449605/
https://europepmc.org/articles/PMC3449605/
