• Title/Summary/Keyword: Chiral nematic ($N^{*}$) phase

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Thermo-Recording for The Composite System of (Disk-Like Molecules and Liquid Crystals)

  • Jeong, Hwan-Kyeong
    • Journal of the Korean Applied Science and Technology
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    • v.19 no.3
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    • pp.245-249
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    • 2002
  • A (disk-like liquid crystal (DLC) monomer/liquid crystals(LCs)/chiral dopant/dichroic dye) composite was irradiated with ultraviolet (UV) light. The (DLC network/LCs/chiral dopant/dichroic dye) was formed in the homeotropically oriented smectic A(SA) phase by the surface orientation treatment and the electric field. A focal-conic texture exhibiting strong light scattering appeared in the heat-induced chiral nematic phase(N${\ast}$) of the composite upon heating. Thermo-recording in the composite system has been realized by using a He-Ne laser. The laser irradiation was induced the phase transitions from SA phase to chiral nematic(N${\ast}$) phase in the composite system.