Ken Ishikawa

Overview

Best Publications

• Antiferroelectric chiral smectic liquid crystals

  Atsuo Fukuda;Yoichi Takanishi;Tadaaki Isozaki;Ken Ishikawa

  738
  Citations

• Light extraction from organic light-emitting diodes enhanced by spontaneously formed buckles

  Won Hoe Koo;Soon Moon Jeong;Fumito Araoka;Ken Ishikawa

  663
  Citations

• Electro-tunable optical diode based on photonic bandgap liquid-crystal heterojunctions.

  Jisoo Hwang;Myoung Hoon Song;Byoungchoo Park;Byoungchoo Park;Suzushi Nishimura

  380
  Citations

• Fabrication of a simultaneous red-green-blue reflector using single-pitched cholesteric liquid crystals.

  Na Young Ha;Youko Ohtsuka;Soon Moon Jeong;Suzushi Nishimura

  246
  Citations

• Recent progress in degradation and stabilization of organic solar cells

  Huanqi Cao;Weidong He;Yiwu Mao;Xiao Lin

  200
  Citations

• Effect of Phase Retardation on Defect‐Mode Lasing in Polymeric Cholesteric Liquid Crystals

  Myoung Hoon Song;Byoungchoo Park;Byoungchoo Park;Ki-Chul Shin;Takashi Ohta

  190
  Citations

• Nonlinear optical properties of highly oriented polydiacetylene evaporated films

  T. Kanetake;K. Ishikawa;T. Hasegawa;T. Koda

  174
  Citations

• How doping a cholesteric liquid crystal with polymeric dye improves an order parameter and makes possible low threshold lasing

  Fumito Araoka;Ki-Chul Shin;Yoichi Takanishi;Ken Ishikawa

  169
  Citations

• (Tetrathiafulvalene)(tetracyanoquinodimethane) as a low-contact-resistance electrode for organic transistors

  Koji Shibata;Hiroshi Wada;Ken Ishikawa;Hideo Takezoe

  148
  Citations

• Defect-mode lasing with lowered threshold in a three-layered hetero-cholesteric liquid-crystal structure

  Myoung Hoon Song;Na Young Ha;Kazuhiro Amemiya;Byoungchoo Park

  133
  Citations

• Orientation of alkyl chains and hindered rotation of carbonyl groups in the smectic-C * phase of antiferroelectric liquid crystals studied by polarized Fourier transform infrared spectroscopy

  Kyeong Hyeon Kim;Ken Ishikawa;Hideo Takezoe;Atsuo Fukuda

  127
  Citations

• Enhanced Optical Activity by Achiral Rod-Like Molecules Nanosegregated in the B4 Structure of Achiral Bent-Core Molecules

  Taketo Otani;Fumito Araoka;Ken Ishikawa;Hideo Takezoe

  126
  Citations

• A racemic layer structure in a chiral bent-core ferroelectric liquid crystal

  M. Nakata;D. R. Link;F. Araoka;J. Thisayukta

  125
  Citations

• Electric-field-induced polar biaxial order in a nontilted smectic phase of an asymmetric bent-core liquid crystal.

  Yoshio Shimbo;Ewa Gorecka;Damian Pociecha;Fumito Araoka

  119
  Citations

• IR and ram-an studies in three polyanilines with different oxidation levels

  T. Fukuda;T. Nishioka;K. Suruga;S. Nakao

  116
  Citations

• Spontaneous polarization parallel to the tilt plane in the antiferroelectric chiral smectic- C A phase of liquid crystals as observed by polarized infrared spectroscopy

  Kouichi Miyachi;Jin Matsushima;Yoichi Takanishi;Ken Ishikawa

  113
  Citations

• Polyquinoxaline as an excellent electron injecting material for electroluminescent device

  Takashi Fukuda;Takaki Kanbara;Takakazu Yamamoto;Ken Ishikawa

  109
  Citations

• Anomalously hindered E2 strength B(E2;2+(1)-->0+) in 16C.

  N Imai;H J Ong;N Aoi;H Sakurai

  106
  Citations

• Circular‐Polarization‐Induced Enantiomeric Excess in Liquid Crystals of an Achiral, Bent‐Shaped Mesogen

  Suk-Won Choi;Tatsuya Izumi;Yusuke Hoshino;Yoichi Takanishi

  105
  Citations

• Contact resistance of dibenzotetrathiafulvalene-based organic transistors with metal and organic electrodes

  Koji Shibata;Ken Ishikawa;Hideo Takezoe;Hiroshi Wada

  102
  Citations