Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Hirohumi Seki"'
Publikováno v:
Materials Science Forum. 924:273-276
We measured Fourier transform infrared (FT-IR) and cathodoluminescence (CL) spectra of SiO2 films with a various thickness, grown on 4H-SiC substrates. The peak frequency of the transverse optical (TO) phonon mode was blue-shifted by about 5 cm−1 a
Publikováno v:
Materials Science Forum. :460-463
We measured Fourier transform infrared (FT-IR) and cathodoluminescence (CL) spectra of SiO2 films with various thicknesses, grown on 4H-SiC substrates. The appearance of broad phonon modes at ~1150–1250 cm-1 in p-polarized light and their disappear
Autor:
Yuichiro Nanen, Tsunenobu Kimoto, Masanobu Yoshikawa, Hirohumi Seki, Tsuneyuki Yamane, Muneharu Kato
Publikováno v:
Applied Spectroscopy. 67:542-545
We report the abnormal behavior of longitudinal optical (LO) phonon in a silicon dioxide (SiO2) film on a 4H-SiC bulk epitaxial substrate using an attenuated total reflection (ATR) technique. The peak frequency of the LO phonon in the ATR spectrum wa
Autor:
Muneharu Kato, Keiko Inoue, Hirohumi Seki, Tsunenobu Kimoto, Yusaku Tanahashi, Hideki Sako, Yuihiro Nanen, Keiko Matsuda, Masanobu Yoshikawa
Publikováno v:
Applied Spectroscopy. 65:543-548
We used Fourier transform infrared (FT-IR) spectroscopy to characterize silicon dioxide (SiO(2)) films on a 4H-SiC(0001) Si face. We found that the peak frequency of the transverse optical (TO) phonon in SiO(2) films grown on a 4H-SiC substrate agree
Publikováno v:
Applied Physics A. 81:1375-1383
In order to form silicon (Si)-on-insulator (SOI) layers with various thicknesses, oxygen implantation with doses between 1.0×1017/cm2 and 6.0×1017/cm2 and at energies between 40 and 240 keV has been carried out into 300 mm diameter (100)Si wafers a
Publikováno v:
Applied spectroscopy. 68(10)
We measured the Fourier transform infrared (FT-IR) and cathodoluminescence (CL) spectra of silicon dioxide (SiO2) films grown on 4H-silicon carbide (4H-SiC) substrates and confirmed that the phonon observed at around 1150-1250 cm−1 originates from
Publikováno v:
The Review of Laser Engineering. 20:728-737
A time evolution in the electric resistance of a glow-discharge causes a difficulty in designing of a power source electric circuit for exciting short pulse lasers. In the present paper we prop-ose a new glow-discharge model to calculate a transient
Autor:
Mayu, Oyanagi, Takayuki, Sugawara, Hirohumi, Seki, Yoshikazu, Ogawa, Takuya, Yagi, Eiji, Nozaki, Sadahide, Ono, Hiroshi, Higuti
Publikováno v:
No shinkei geka. Neurological surgery. 34(2)
Occurrence of a mycotic aneurysm extracranially is extremely rare. We report our experience with a case of mycotic aneurysm that occurred in the external carotid artery accompanying infectious endocarditis. The case was a 33-year-old male. He visited
Autor:
Takashi Miyamoto, Satoshi Hasaka, Minoru Inoue, Masanori Oosawa, Kazuto Ikeda, Yoshihiro Sugita, Hideki Hashimoto, Yukiko Izumi, Hirohumi Seki, Takashi Yamamoto
Publikováno v:
Extended Abstracts of the 2005 International Conference on Solid State Devices and Materials.
Publikováno v:
Applied Physics Letters. 102:051612
We prepared SiO2 films with channel mobilities (CMs) of 35, 105, and 112cm[2]/Vs on 4H-SiC (0001) Si, (1-100) M, and (11-20) A faces by post-oxidation annealing (POA) in NO ambient and measured the cathodoluminescence (CL) spectra. For an acceleratio