Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Kouichi, Takase"'
Autor:
Shuta Hara, Jumpei Aisu, Masahiro Kato, Takashige Aono, Kosuke Sugawa, Kouichi Takase, Joe Otsuki, Shigeru Shimizu, Hiroki Ikake
Publikováno v:
Nanoscale Research Letters, Vol 13, Iss 1, Pp 1-7 (2018)
Abstract In recent years, monodispersed magnetic nanoparticles with a core/shell structure are expected for their wide applications including magnetic fluid, recoverable catalysts, and biological analysis. However, their synthesis method needs numero
Externí odkaz:
https://doaj.org/article/b99ffe89647445acbb8529c5bdc7ebbd
Publikováno v:
Ceramics International. 48:2038-2044
One-dimensional ZnO exhibits high polarization but is considered to be non-ferroelectric. Here, we show ferroelectricity in carbon-doped ZnO nanocolumnars deposited using one-step DC-unbalanced magnetron sputtering. Doping carbon effectively increase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c550867ec38ddffbc4c1c2b856147dd
https://doi.org/10.1016/j.ceramint.2021.09.289
https://doi.org/10.1016/j.ceramint.2021.09.289
Autor:
Kosuke Sugawa, Hironobu Tahara, Shiryu Watanabe, Naoto Takeshima, Shota Jin, Misa Fukushima, Ryuzi Katoh, Kouichi Takase, Kosuke Ishida, Satoshi Yoshinari, Toru Fukasawa, Joe Otsuki
Publikováno v:
Langmuir. 37:11508-11519
The performance improvement of solid-state triplet-triplet annihilation-based photon upconversion (TTA-UC) systems is required for the application to various solar devices. The performance can be improved by making use of the local strong electric fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::917d14ffa2012555e196ec0361b7a4d6
https://doi.org/10.1021/acs.langmuir.1c01770
https://doi.org/10.1021/acs.langmuir.1c01770
Autor:
Kazuki Sumida, Sota Higaki, Hitoshi Sato, Daichi Tsuru, Koji Miyamoto, Taichi Okuda, Yoshihiro Kuroiwa, Chikako Moriyoshi, Kouichi Takase, Tamio Oguchi, Akio Kimura
Publikováno v:
Journal of the Physical Society of Japan; 8/15/2023, Vol. 92 Issue 8, p1-6, 6p
Autor:
Masaki Noguchi, Kouichi Takase, Joe Otsuki, Kaoru Tamada, Naoto Takeshima, Shota Jin, Hironobu Tahara, Kosuke Sugawa
Publikováno v:
Chemistry Letters. 49:240-243
Synthesis of anisotropic Ag nanoprisms (AgPRs) contributes to the development of high performance plasmonic devices. The localized surface plasmon resonance wavelength of AgPRs was successfully tun...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a541cf311cc70fa45fbd40139160eb4f
https://doi.org/10.1246/cl.190888
https://doi.org/10.1246/cl.190888
Publikováno v:
IEEE Magnetics Letters. 11:1-4
Undoped ZnO nanostructures were deposited on Si (100) substrate using direct-current-unbalanced magnetron sputtering. The nanostructure modification of conelike into rod-shaped nanocolumnars is found after thermal annealing with O2. This modification
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3252bfb400150a84d638ba0cedd359a8
https://doi.org/10.1109/lmag.2020.2981281
https://doi.org/10.1109/lmag.2020.2981281
Autor:
Takuto Nakazawa, Akihiro Fukawa, Josuke Tamura, Taiga Yamanouchi, Toshinori Kodama, Naruya Serizawa, Kyosuke Murata, Tomohiro Shimizu, Kouichi Takase
Publikováno v:
Japanese Journal of Applied Physics. 62:SG1016
Recently, room temperature ferromagnetism (RTFM) has been reported to be found in many kinds of oxide semiconductor nanoparticles. The origin of the magnetic moment is believed to be defects because RTFM strongly depends on particle size. In this stu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::693bb11c8e1a1707bc5456c8e7e76304
https://doi.org/10.35848/1347-4065/acb94d
https://doi.org/10.35848/1347-4065/acb94d
Autor:
Akihiro Fukawa, Takuto Nakazawa, Josuke Tamura, Kyosuke Murata, Tomohiro Shimizu, Masanobu Miyata, Mikio Koyano, Kouichi Takase
Publikováno v:
Applied Physics Letters. 122:052403
There have been many reports on room-temperature ferromagnetism (RTFM), which is often observed in pure semiconductor nanoparticles without transition metal elements. Because RTFM tends to be found in semiconducting thin films or nanoparticles, the o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1153c14b39ddfb802e716759b9dcc5fa
https://doi.org/10.1063/5.0132027
https://doi.org/10.1063/5.0132027
Autor:
Masa-aki Haga, Jotaro Honda, Joe Otsuki, Hironobu Tahara, Kotomi Kanakubo, Kosuke Sugawa, Mitsuaki Matsubara, Daisuke Kanai, Yoshiyuki Kojima, Takamasa Sagara, Jun Yokoyama, Nobuyuki Nishimiya, Kouichi Takase, Hiroaki Ozawa, Yasuhiro Watanuki
Publikováno v:
ACS Applied Energy Materials. 2:6472-6483
FeS2 nanocrystals with the diameter of more than several dozen nanometers exhibit well-defined optical extinction peaks in a near-infrared region. These peaks, which are not exhibited from bulk FeS2, have been ascribed to the localized surface plasmo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b44c258211a2bb249959404234516920
https://doi.org/10.1021/acsaem.9b01060
https://doi.org/10.1021/acsaem.9b01060
Autor:
Rena Widita, Kouichi Takase, Shibghatullah Muhammady, Yasni Novi Hendri, Euis Sustini, Yudi Darma
Publikováno v:
Materials Science in Semiconductor Processing. 93:50-58
We study the optical properties of ZnO films grown using plasma-assisted molecular beam epitaxy. We employ three different growth temperatures (Tgrowth) of 298, 373, and 423 K. The XRD patterns and field-emission SEM images indicate that Tgrowth incr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46779876169972e8c6b4e04b2d4ae3d1
https://doi.org/10.1016/j.mssp.2018.12.030
https://doi.org/10.1016/j.mssp.2018.12.030