Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)
- Volume 27 Issue 4
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- Pages.31-35
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- 2004
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- 2288-3509(pISSN)
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- 2384-1168(eISSN)
The Application of Ultrasonic Spectroscopy System for Phase Transition of Liquid Crystal
액정의 상전이 측정에 대한 초음파 spectroscopy 시스템의 적용
- Kim, Jeong-Koo (Department of Radiological Science, Hanseo University) ;
- Lim, Cheong-Hwan (Department of Radiological Science, Hanseo University)
- Published : 2004.12.31
Abstract
A new measuring system for ultrasonic spectroscopy was constructed, utilizing PVDF [poly(vinylidene fluoride)] polymer films as wideband transducers. In a test of its performance, this measuring system was successfully applied to study of the nematic-isotropic phase transition in MBBA(p-methoxybenzylidene-p-n-butylan iline) liquid crystal. We could be confirmed that the phase transition in MBBA is
PVDF[poly(vinylidene fluoride)] 압전소자로 제작된 초음파 변환기를 이용하여 초음파 spectroscopy 측정시스템을 제작하였다. 이 장치를 이용하여 MBBA(p-methoxy benzylidene-p-n-butylaniline) 액정의 nematic-isotropic 상전이 현상을 관측한 결과 상전이 온도가