Search Results - "Shikata, Shinichi"

Single crystal diamond wafers for high power electronics by Shikata, Shinichi

“…According to international energy proposal, about 25% of the total CO2 reduction should come from “end use efficiency”. Hence, low loss power devices are an…”
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Diamond dislocations analysis by X-ray topography by Shikata, Shinichi

“…The dislocation identification method using X-ray topography by reflection mode geometry was applied to characterize IIa, Ib and highly B doped high pressure…”
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Influence of threading dislocations on diamond Schottky barrier diode characteristics by Akashi, Naoya, Fujimaki, Nanako, Shikata, Shinichi

“…Influence of dislocations on diamond Schottky barrier diode characteristics of vertical structure p- layer/p+ substrate is studied. Devices are intentionally…”
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Potential and Challenges of Diamond Wafer Toward Power Electronics by Shikata, Shinichi

“…To achieve a 50% worldwide reduction of CO 2 by the middle of this century, development of energy saving power device technology using wide bandgap materials…”
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High-sensitivity magnetometry based on quantum beats in diamond nitrogen-vacancy centers by Fang, Kejie, Acosta, Victor M, Santori, Charles, Huang, Zhihong, Itoh, Kohei M, Watanabe, Hideyuki, Shikata, Shinichi, Beausoleil, Raymond G

“…We demonstrate an absolute magnetometer based on quantum beats in the ground state of nitrogen-vacancy centers in diamond. We show that, by eliminating the…”
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Monitoring spin coherence of single nitrogen-vacancy centers in nanodiamonds during pH changes in aqueous buffer solutions by Fujiwara, Masazumi, Tsukahara, Ryuta, Sera, Yoshihiko, Yukawa, Hiroshi, Baba, Yoshinobu, Shikata, Shinichi, Hashimoto, Hideki

“…We report on the sensing stability of quantum nanosensors in aqueous buffer solutions for the two detection schemes of quantum decoherence spectroscopy and…”
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A nitrogen doped low-dislocation density free-standing single crystal diamond plate fabricated by a lift-off process by Mokuno, Yoshiaki, Kato, Yukako, Tsubouchi, Nobuteru, Chayahara, Akiyoshi, Yamada, Hideaki, Shikata, Shinichi

“…A nitrogen-doped single crystal diamond plate with a low dislocation density is fabricated by chemical vapor deposition (CVD) from a high pressure high…”
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Dislocation analysis of homoepitaxial diamond (001) film by x-ray topography by Shikata, Shinichi, Matsuyama, Yuka, Teraji, Tokuyuki

“…There is a great need for high-quality diamond with low dislocation density for high-output power device applications. In this study, we attempted to identify…”
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Observation of the linewidth broadening of single spins in diamond nanoparticles in aqueous fluid and its relation to the rotational Brownian motion by Fujiwara, Masazumi, Shikano, Yutaka, Tsukahara, Ryuta, Shikata, Shinichi, Hashimoto, Hideki

“…Capturing the fast rotational motion of single nanoparticles has been hindered owing to the difficulty of acquiring directional information under the optical…”
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Polarized Raman spectroscopy of phosphorous doped diamond films by Matsuoka, Minori, Tsuchida, Yuki, Ohtani, Noboru, Yamada, Takatoshi, Koizumi, Satoshi, Shikata, Shinichi

“…Polarized Raman measurements were performed on P-doped diamond films to investigate the origin of the peaks in the lower wave numbers, which are unknown to…”
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Optical and Spin Coherence Properties of Nitrogen-Vacancy Centers Placed in a 100 nm Thick Isotopically Purified Diamond Layer by Ishikawa, Toyofumi, Fu, Kai-Mei C, Santori, Charles, Acosta, Victor M, Beausoleil, Raymond G, Watanabe, Hideyuki, Shikata, Shinichi, Itoh, Kohei M

“…We have studied optical and spin properties of near-surface nitrogen-vacancy (NV) centers incorporated during chemical vapor phase growth of isotopically…”
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Numerical microwave plasma discharge study for the growth of large single-crystal diamond by Yamada, Hideaki, Chayahara, Akiyoshi, Mokuno, Yoshiaki, Shikata, Shinichi

“…A microwave plasma discharge simulation was conducted to determine the spatial concentrations of hydrocarbon radicals and their uniformity over areas over…”
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X-ray absorption fine structure study of heavily P doped (111) and (001) diamond by Shikata, Shinichi, Yamaguchi, Koji, Fujiwara, Akihiko, Tamenori, Yusuke, Yahiro, Jumpei, Kunisu, Masahiro, Yamada, Takatoshi

“…X-ray absorption fine structure (XANES) measurements were carried out for P doped (111) and (001) diamond films, and the results were compared with those from…”
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X-ray absorption near edge structure and extended X-ray absorption fine structure studies of P doped (111) diamond by Shikata, Shinichi, Yamaguchi, Koji, Fujiwara, Akihiko, Tamenori, Yusuke, Tsuruta, Kazuki, Yamada, Takatoshi, Nicley, Shannon S., Haenen, Ken, Koizumi, Satoshi

“…The P dopant site control in diamond is critical to achieve high mobility n type channels and high concentration n+ layers for power device applications. In…”
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Intrinsic exciton transitions of isotopically purified 13C studied by photoluminescence and transmission spectroscopy by Ishii, Ryota, Shikata, Shinichi, Teraji, Tokuyuki, Kanda, Hisao, Watanabe, Hideyuki, Funato, Mitsuru, Kawakami, Yoichi

“…The intrinsic exciton transitions of isotopically purified (13C) and natural-abundance (N.A.C) diamond are studied by photoluminescence and transmission…”
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Evaluation of diamond mosaic wafer crystallinity by electron backscatter diffraction by Matsushita, Akio, Fujimori, Naoji, Tsuchida, Yuki, Ohtani, Noboru, Dojima, Daichi, Koide, Kazunori, Kaneko, Tadaaki, Shikata, Shinichi

“…A mosaic substrate is a promising candidate to create large size single crystal diamonds for various types of applications. In this study, the crystal…”
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Effects of crystallographic orientation on the homoepitaxial overgrowth on tiled single crystal diamond clones by Yamada, Hideaki, Chayahara, Akiyoshi, Mokuno, Yoshiaki, Kato, Yukako, Shikata, Shinichi

“…We found that optimization of the off-direction could be used to control morphology, improve crystal quality and suppress the breaking of single crystal…”
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Low propagation loss in a one-port SAW resonator fabricated on single-crystal diamond for super-high-frequency applications by Fujii, Satoshi, Odawara, Tatsuya, Yamada, Haruya, Omori, Tatsuya, Hashimoto, Ken-ya, Torii, Hironori, Umezawa, Hitoshi, Shikata, Shinichi

“…Diamond has the highest known SAW phase velocity, sufficient for applications in the gigahertz range. However, although numerous studies have demonstrated SAW…”
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Measurement of Neutrons Produced by Inertial Fusion with a Diamond Radiation Detector by Shimaoka, Takehiro, Kaneko, Junichi H., Arikawa, Yasunobu, Tsubota, Mitsutaka Isobe,Masakatsu, Oda, Kengo, Nakai, Mitsuo, Azechi, Hiroyuki Shiraga,Hiroshi, Chayahara, Akiyoshi, Umezawa, Hitoshi, Shikata, Shinichi

“…We evaluated the neutron bang time in fast-ignition inertial confinement fusion and the response function of deuterium-deuterium (DD) neutrons for burn history…”
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Isotopic effects on phonons and excitons in diamond studied by deep-ultraviolet continuous-wave photoluminescence spectroscopy by Ishii, Ryota, Shikata, Shinichi, Teraji, Tokuyuki, Kanda, Hisao, Watanabe, Hideyuki, Funato, Mitsuru, Kawakami, Yoichi

“…Photoluminescence (PL) spectroscopy is performed for natural-abundance (N.A.C) and isotopically purified (13C) synthetic diamond using a deep-ultraviolet…”
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