서지주요정보
강유전성 액정을 함유한 고분자/네마틱 액정 분산계 = Polymer dispersed liquid crystal films doped with ferroelectric LC
서명 / 저자 강유전성 액정을 함유한 고분자/네마틱 액정 분산계 = Polymer dispersed liquid crystal films doped with ferroelectric LC / 정광희.
저자명 정광희 ; Jeong, Kwang-Hee
발행사항 [대전 : 한국과학기술원, 1997].
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소장정보

등록번호

8007526

소장위치/청구기호

학술문화관(문화관) 보존서고

MCHE 97028

휴대폰 전송

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초록정보

Ferroelectric liquid crystal (FLC) with acrylate was prepared to investigate surface phenomena due to motions by spontaneous polarization of FLCs which is reacted with polymer matrix with polymer ball morphology at interface. it will result in lowering hysteresis and driving voltage phenomenologically. FLC has biphenyl unit which will give rise to interact with nematic LC strongly. so monomer reacted with polymer matrix will exist at polymer interface. we could conform that FLCs synthesized shows ferroelectric property by dielectric measurement and D-E hysteresis. Driving voltage increased as FLC concentration increased. that is why unreacted monomer interact with nematic LC and form cholesteric LCs. This cholesteric LCs forms helical structure having light scattering at low voltage, so increase driving voltage. we couldnot observed motions of FLCs because effects of cholesteric LCs were larger than motions of FLCs at polymer interface. we observed the turn-off time rapidly decreased as FLC concentration increased. it was due to helical structure formation process in cholesteric phase on voltage-off condition. Hysteresis also increase as FLC concentration increased. it was difference between the voltage occuring phase chang from cholesteric phase to nematic phase when voltage increase and the voltage occuring phase change from nematic phase to cholesteric phase when voltage decrease. so motions of FLC mesogen at polymer interface couldnot effect hysteresis.

서지기타정보

서지기타정보
청구기호 {MCHE 97028
형태사항 viii, 58 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Kwang-Hee Jeong
지도교수의 한글표기 : 박오옥
지도교수의 영문표기 : O-Ok Park
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 57-58
주제 강유전성 액정
고분자/네마틱 액정 분산계
전기광학적 성질
콜레스테릭 액정
Ferroelectric LC
PDLC
Electro-optic property
Cholesteric LC
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