| 학회 |
한국재료학회 |
| 학술대회 |
2003년 가을 (11/21 ~ 11/22, 연세대학교) |
| 권호 |
9권 2호 |
| 발표분야 |
세라믹스 |
| 제목 |
유/무기 졸-겔 재료에 비선형광학 물질의 배향특성에 대한 액정효과 |
| 초록 |
Second-order nonlinear optical(NLO) materials have been extensively studied for applications in photonic devices, such as frequency doubling and electro-optical(EO) modulation, because of their large optical nonlinearity, excellent processibility, low dielectric constant, and high laser damage thresholds. The poling behaviour of NLO chromophore in organic/inorganic matrixes showed the randomization of poled NLO chromophore in the absence of poling field. The liquid crystal molecules in a droplet showed a long-range orientational order along a director. Therefore, liquid crystal effects on poling behaviour of NLO chromophore dispersed in organically modified inorganic sol-gel materials were investigated. Using sol-gel process for the development of NLO material has received increasing attention. Organically modified inorganic NLO sol-gel materials are obtained via incorporation of the organic NLO active chromophore into an alkoxysilane based inorganic network. One of the most important thing in this works was that tetraethoxysilane(TEOS) and methyltrimathoxysilane(MTMS) were used as precursor followed by hydrolysis and condensation without using any acidic catalyst during the process. The NLO chromophores in the liquid crystal nanodomains were well mixed with I/O hybrid matrix, deposited on transparent ITO-coated glasses. The poling behaviour of liquid crystal effects of NLO chromophore dispersed in I/O hybrid matrix were investigated by UV-vis spectroscopy. Size distribution and morphology of the NLO chromophores doped in the liquid crystal nanodomains dispersed in I/O hybrid matrix were investigated by SEM. |
| 저자 |
Baek Inchan1, Seok Sangil2, Jin Moonyoung1, Lee Changjin2
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| 소속 |
1Advanced Materials Division, 2Korea Research Institute of Chemical Technology |
| 키워드 |
Liquid Crystal; NLO chromophore; nanodoamin; I/O hybrid matrix
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| E-Mail |
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