Y
Yoshio Sakai
Researcher at Tokyo University of Science, Yamaguchi
Publications - 45
Citations - 677
Yoshio Sakai is an academic researcher from Tokyo University of Science, Yamaguchi. The author has contributed to research in topics: Liquid crystal & Dielectric. The author has an hindex of 14, co-authored 45 publications receiving 656 citations. Previous affiliations of Yoshio Sakai include Tokyo University of Science.
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Electrical Properties of Semiconductor Photodiodes with Semitransparent Films
TL;DR: In this paper, a high speed photodiodes with semitransparent film-semiconductor junctions, which behave as Schottky barriers, are designed and prepared.
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Dielectric spectroscopy of metal nanoparticle doped liquid crystal displays exhibiting frequency modulation response
Shunsuke Kobayashi,Tomohiro Miyama,N. Nishida,Yoshio Sakai,Hiroyuki Shiraki,Yukihide Shiraishi,Naoki Toshima +6 more
TL;DR: In this article, the authors investigated the dependence of the dielectric relaxation frequency on the concentration of nanoparticles and the their electrical properties, whereas conventional theories based on electromagnetic theory are unable to explain this concentration dependence.
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Fast Switching of Frequency Modulation Twisted Nematic Liquid Crystal Display Fabricated by Doping Nanoparticles and Its Mechanism
Tomohiro Miyama,Jirakorn Thisayukta,Hiroyuki Shiraki,Yoshio Sakai,Yukihide Shiraishi,Naoki Toshima,Shunsuke Kobayashi +6 more
TL;DR: In this article, a twisted nematic (TN) liquid crystal display (LCD) fabricated by doping Ag nanoparticles protected with NLC, 5CB (K-15, Merck) molecules has been investigated, and it is shown that the device exhibits a unique electrooptic response characteristic that is sensitive to the high-frequency components of the operating voltage together with the conventional root-mean-square voltage response.
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Growth and properties of CdS epitaxial layers by the close‐spaced technique
Akihiko Yoshikawa,Yoshio Sakai +1 more
TL;DR: In this article, CdS layers were epitaxially grown on GaAs in an atmosphere of hydrogen gas by the close-spaced technique, and the thermodynamics of the reaction, the morphology, and electrical properties of the CcS epitaxial films were studied.
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Dielectric Properties of Frequency Modulation Twisted Nematic LCDs Doped with Palladium (Pd) Nanoparticles
Hiroyuki Shiraki,Sudarshan Kundu,Yoshio Sakai,Takenori Masumi,Yukihide Shiraishi,Naoki Toshima,Shunsuke Kobayashi +6 more
TL;DR: In this article, the frequency range in the FM-TN-LCD spreading from tens Hz to an upper limit 1 kHz, depending on the concentration of nanoparticles, correlates with the dielectric dispersion of the sample cell, which is expressed analytically by the Maxwell-Wagner theory.