| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 봄 (04/08 ~ 04/09, 대전컨벤션센터) |
| 권호 |
35권 1호 |
| 발표분야 |
나노카본기반 응용기술 |
| 제목 |
Highly Uniform Homeotropic and Planar Alignment of Liquid Crystals using Carbon Nanotube-Magnetic Particle Hybrid Materials |
| 초록 |
We have developed a simple yet versatile method for aligning liquid crystals (LCs) by using magnetic-field oriented single-walled carbon nanotubes (SWNTs) that were modified with magnetic particles. Polarized optical microscopy (POM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) results showed that a high degree of homeotropic/planar LC alignment was achieved under very low magnetic fields over large-areas ( ≥ 500 μm). Raman spectroscopic results show that this is due to the SWNTs being exposed to a very low strength magnetic field, combined with strong - interactions between the biphenyl group in the LCs and the wall of the SWNTs. Unlike conventional alignment methods and prevous SWNTs approaches, this method has many practical advantages such as providing highly uniform alignment and simultaneous control of planar/homeotropic alignment over large areas without the use of alignment layers. |
| 저자 |
정현수, 윤상천, 김윤호, 김정현, 윤은경, 정희태
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| 소속 |
KAIST |
| 키워드 |
액정 배향; 탄소나노튜브; 비공유 결합; 수직; 수평배향
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| E-Mail |
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