서지주요정보
네마틱 액정에서의 전기장에 의한 Freedericksz 전이의 동역학에 관한 연구 = Dynamics of e-field induced freedericksz transition in Nematic Liquid Crystals
서명 / 저자 네마틱 액정에서의 전기장에 의한 Freedericksz 전이의 동역학에 관한 연구 = Dynamics of e-field induced freedericksz transition in Nematic Liquid Crystals / 박기복.
저자명 박기복 ; Park, Ki-Bog
발행사항 [대전 : 한국과학기술원, 1998].
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등록번호

8008453

소장위치/청구기호

학술문화관(문화관) 보존서고

MPH 98011

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초록정보

We investigated the dynamics of E-field induced Freedericksz transition in the Nematic Liquid Crystal(NLC) cells having homogeneous alignments through the measurements of electro-optic transmittances and dielectric constants. The explicit relation between the phase difference and the distribution of directors in the measurement of electro-optic transmittances were approximately established within the scope of $(E-E_{th})/E_{th}≪1$. The time-dependence of the experimentally acquired phase differences in the switching-on and off processes with the E-field applied for a relatively short time(~100 ms) were in good agreement with the prediction of the theory which only included the rotation of directors by external fields. In the measurement of dielectric constants with the E-field applied for a relatively long time(~100 ms), we observed the tendency that after the completion of the transition the deformation of directors were slowly reduced as time went on. This seems to be the phenomenon having relation with the fluidity of NLC and ionic motions, which can affect director motion.

서지기타정보

서지기타정보
청구기호 {MPH 98011
형태사항 ii, 62 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Ki-Bog Park
지도교수의 한글표기 : 김종진
지도교수의 영문표기 : Jong-Jean Kim
학위논문 학위논문(석사) - 한국과학기술원 : 물리학과,
서지주기 참고문헌 : p. 60-62
주제 네마틱 액정
Freedericksz 전이
동역학
Nematic Liquid Crystals
Freedericksz transition
Dynamics
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