Yoshimichi Ohki

Research.com Recognitions

• 2000 - IEEE Fellow For contributions to understanding of high-field and laser induced dielectric phenomena in insulating materials.

Overview

Best Publications

• A plasmonic photocatalyst consisting of silver nanoparticles embedded in titanium dioxide.

  Koichi Awazu;Makoto Fujimaki;Carsten Rockstuhl;Junji Tominaga

  1761
  Citations

• Proposal of a multi-core model for polymer nanocomposite dielectrics

  T. Tanaka;M. Kozako;N. Fuse;Y. Ohki

  1518
  Citations

• Photoluminescence from defect centers in high-purity silica glasses observed under 7.9-eV excitation

  Hiroyuki Nishikawa;Taiji Shiroyama;Ryuta Nakamura;Yoshimichi Ohki

  490
  Citations

• Role of interface on the thermal conductivity of highly filled dielectric epoxy/AlN composites

  Xingyi Huang;Tomonori Iizuka;Pingkai Jiang;Yoshimichi Ohki

  485
  Citations

• Correlation of the 5.0- and 7.6-eV absorption bands in SiO2 with oxygen vacancy

  Ryoichi Tohmon;Hiroyasu Mizuno;Yoshimichi Ohki;Kotoku Sasagane

  384
  Citations

• 2.7-eV luminescence in as-manufactured high-purity silica glass.

  Ryoichi Tohmon;Yasushi Shimogaichi;Hiroyasu Mizuno;Yoshimichi Ohki

  346
  Citations

• Various types of nonbridging oxygen hole center in high-purity silica glass

  Shuji Munekuni;Toshihisa Yamanaka;Yasushi Shimogaichi;Ryoichi Tohmon

  310
  Citations

• Surface degradation of polyamide nanocomposites caused by partial discharges using IEC (b) electrodes

  M. Kozako;N. Fuse;Y. Ohki;T. Okamoto

  301
  Citations

• Electric modulus powerful tool for analyzing dielectric behavior

  Fuqiang Tian;Yoshimichi Ohki

  249
  Citations

• Enhanced partial discharge resistance of epoxy/clay nanocomposite prepared by newly developed organic modification and solubilization methods

  T. Tanaka;Y. Ohki;M. Ochi;M. Harada

  227
  Citations

• Effects of nano-filler addition on partial discharge resistance and dielectric breakdown strength of Micro-Al 2 O 3 Epoxy composite

  Zhe Li;Kenji Okamoto;Yoshimichi Ohki;Toshikatsu Tanaka

  221
  Citations

• Dielectric properties of water and water/ethylene glycol mixtures for use in pulsed power system design

  M. Zahn;Y. Ohki;D.B. Fenneman;R.J. Gripshover

  205
  Citations

• Development of epoxy/BN composites with high thermal conductivity and sufficient dielectric breakdown strength partI - sample preparations and thermal conductivity

  Zengbin Wang;Tomonori Iizuka;Masahiro Kozako;Yoshimichi Ohki

  195
  Citations

• Decay kinetics of the 4.4-eV photoluminescence associated with the two states of oxygen-deficient-type defect in amorphous SiO2.

  Hiroyuki Nishikawa;Eiki Watanabe;Daisuke Ito;Yoshimichi Ohki

  194
  Citations

• Plasma-enhanced chemical vapor deposition and characterization of high-permittivity hafnium and zirconium silicate films

  Hiromitsu Kato;Tomohiro Nango;Takeshi Miyagawa;Takahiro Katagiri

  188
  Citations

• Dielectric properties of XLPE/Sio2 nanocomposites based on CIGRE WG D1.24 cooperative test results

  T. Tanaka;A. Bulinski;J. Castellon;M. Frechette

  182
  Citations

• Defects and optical absorption bands induced by surplus oxygen in high‐purity synthetic silica

  Hiroyuki Nishikawa;Ryoichi Tohmon;Yoshimichi Ohki;Kaya Nagasawa

  172
  Citations

• Visible photoluminescence from Si clusters in γ‐irradiated amorphous SiO2

  Hiroyuki Nishikawa;Eiki Watanabe;Daisuke Ito;Yuryo Sakurai

  153
  Citations

• Effects of crosslinking byproducts on space charge formation in crosslinked polyethylene

  Y. Maeno;N. Hirai;Y. Ohki;T. Tanaka

  128
  Citations

• Development of epoxy/BN composites with high thermal conductivity and sufficient dielectric breakdown strength part II-breakdown strength

  Zengbin Wang;Tomonori Iizuka;Masahiro Kozako;Yoshimichi Ohki

  127
  Citations

• Generation mechanism of photoinduced paramagnetic centers from preexisting precursors in high-purity silicas.

  Hiroyuki Nishikawa;Ryuta Nakamura;Ryoichi Tohmon;Yoshimichi Ohki

  123
  Citations