| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 봄 (04/05 ~ 04/07, 대전컨벤션센터) |
| 권호 |
42권 1호 |
| 발표분야 |
Post-LCD 시대의 액정 과학과 기술 |
| 제목 |
Orientation control of liqiud crystals under nanoconfinement and its photonic application |
| 초록 |
Molecular orientation of liquid crystals (LCs) can be controlled in a porous anodic aluminum oxide (AAO) film due to nanoconfinement effect. We directly observed the molecular behaviors upon cooling from isotropic to nematic (N) and smectic A (SmA) phases at nano-scale using a grazing incidence X-ray diffrection (GIXD) technique . The molecular orientation could be controlled along the desired directions as a function of surface treatments of the AAO film and pore diameter. We used the nanoconfined LC as a refractive-index-changable medium in a photonic crystal (PC) made by the periodic AAO. The photonic bandgap of the AAO PC can be switched depending on the values of the refractive index of the LC, which can be varied during phase transition. |
| 저자 |
류성호1, 김민준1, 이원석1, 안형주2, 신태주3, 최석원4, 윤동기1
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| 소속 |
1KAIST, 2Pohang Accelerator Laboratory, 3UNIST, 4경희대 |
| 키워드 |
liquid crystal; confinement effect; photonic crystal; anodic aluminum oxide
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| E-Mail |
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