強誘電性(高分子/低分子)液晶複合系的分子鏈運動與光散亂效應的應用

Properties of Molecular Chain and Application of Transient Light Scattering in FLCP/FLC Composite System

徐明欽(Min-Chin Hsu)

指導教授 ： 黃振球

元智大學/工程學院/化學工程與材料科學學系/碩士(1995年)

摘要

無資料

關鍵字

強誘電性 ； 高分子液晶 ； 過渡光散亂 ； 可逆性 ； 雙安定現象選擇

並列摘要

Abstract Recently side chain
liquid crystalline polymers(LCP) have attacted considerable of
interst owing to their ability ofcombining the electro-optical
of LCs with the execellent me-chanical characteristics of
polymeric materials. This bifun-ction properties has potential
for application in information storage. The magnitude of
response time of LCPs to an externalstimulation, i.e. an
electric or a magnetic field, is signifi-cantly longer than that
of LCs because LCPs, in mesophase state, being more viscouse
than LCs. aggregation states and transient light scattering in
the ch-iral smectic C phase of LCP/LC mixture hase been studied.
The LC serves as a solvent or diluent for LCP,has been
previously studied for the sake of reducing the viscousity of
the LCP.The trasients scattering mode (TSM) was obtained by
repeated vo-ltage polarity reversal.The reversible transparent-
opaque change was observed in the chiral smectic C state upon
application ofelectric fields with low and high frequencises,
respectively.Bothtransparent and opaque state could be
maintained stably even when electric field was turned off.Anovel
type of electrio-optical eff-ect based on light scattering was
obtained for FLCP/LC in the chiral smectic C state.

並列關鍵字

ferroelectric ； liquid crystalline polymer ； transient scattering mode ； reversible ； bistable light swiching