Diffraction from Polymer-Stabilized Cholesteric Texture Films

Autor:	Yun-Hsing Fan, Andy Ying-Guey Fuh, Chi-Yen Huang, Ming-Feng Shieh, Tsung-Chih Ko, I-Min Jiang, M. S. Tsai
Rok vydání:	2001
Předmět:	chemistry.chemical_classification Diffraction Materials science business.industry General Engineering Analytical chemistry General Physics and Astronomy Polymer Light scattering Optics chemistry Polymerization Liquid crystal UV curing Texture (crystalline) business Intensity (heat transfer)
Zdroj:	Japanese Journal of Applied Physics. 40:2255
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.40.2255
Popis:	We have performed diffraction experiments on polymer-stabilized cholesteric texture (PSCT) films made from E48-BAB6 mixtures cured at various UV intensities. The diffraction observed in these samples is the Qu'etelet-type ring pattern, which is generated from the scattering of light by the clusters of the polymer networks and the focal conic domains of cholesteric liquid crystals in a PSCT cell. We monitored the dynamic change of the intensity of the first ring of a sample during polymerization. After polymerization, both the electro-optical characteristics and the diffracted ring intensities of various orders were measured. The results showed that both the applied voltage and the UV curing intensity affected the diffraction intensity significantly. Furthermore, the results obtained from diffraction measurements correlate with the electro-optical ones. Thus, the diffraction measurements could provide us with another qualitative, nondestructive method to analyze PSCT devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::05d21ef0d291a88ada9243c5ea8e06bd https://doi.org/10.1143/jjap.40.2255 Zobrazit plný text záznamu