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P‐123: Influence of Metal Nanoparticle on Electro‐Optic Response of Dual Frequency Nematic Liquid Crystal
Author(s) -
Thisayukta Jirakorn,
Masumi Takenori,
Shiraishi Yukihide,
Toshima Naoki,
Kobayashi Shunsuke,
Sawada Atsushi,
Naemura Shohei
Publication year - 2003
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1832371
Subject(s) - liquid crystal , materials science , low frequency , nanoparticle , doping , polarization (electrochemistry) , voltage , optics , condensed matter physics , optoelectronics , chemistry , nanotechnology , physics , quantum mechanics , astronomy
We demonstrate the influence of the nanoparticles on the electro‐optic (EO) response of the dual frequency nematic liquid crystal mixture. The dual frequency nematic itself has the cross over frequency ( fc ) around 2.9 KHz and exhibits frequency modulation response upon the frequency of the applied voltage. By doping the dual frequency nematic with Pd‐5CB and/or Pd‐CCN‐47 nanoparticles, we found that in the mixture contained (1%) Pd‐5CB, the cross over frequency ( fc ) significantly increased and at frequency higher than 2 KHz, subsequently, the threshold voltage (Vth) becomes lower than that of the dual frequency nematic alone, while the Pd‐CCN‐47 nano‐particle show slightly effect. The result suggests that the interfacial polarization, refer to Maxwell‐Wagner effect, takes place in this heterogeneous medium caused by incorporating of the nanoparticle, which modifies the EO characteristic of the dual frequency.