Diffraction from polymer-stabilized cholesteric texture films

Tsung Chih Ko, Yun Hsing Fan, Ming Feng Shieh, Andy Ying Guey Fuh, Chi-Yen Huang, Ming Shann Tsai, I. Min Jiang

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2255-2258
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume40
Issue number4 A
Publication statusPublished - 2001 Apr 1

Fingerprint

textures
Textures
Diffraction
polymers
Polymers
diffraction
rings
polymerization
Polymerization
Cholesteric liquid crystals
curing
Curing
liquid crystals
Scattering
Electric potential
electric potential
cells
scattering
Experiments

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Ko, T. C., Fan, Y. H., Shieh, M. F., Fuh, A. Y. G., Huang, C-Y., Tsai, M. S., & Jiang, I. M. (2001). Diffraction from polymer-stabilized cholesteric texture films. Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 40(4 A), 2255-2258.
Ko, Tsung Chih ; Fan, Yun Hsing ; Shieh, Ming Feng ; Fuh, Andy Ying Guey ; Huang, Chi-Yen ; Tsai, Ming Shann ; Jiang, I. Min. / Diffraction from polymer-stabilized cholesteric texture films. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2001 ; Vol. 40, No. 4 A. pp. 2255-2258.
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Diffraction from polymer-stabilized cholesteric texture films. / Ko, Tsung Chih; Fan, Yun Hsing; Shieh, Ming Feng; Fuh, Andy Ying Guey; Huang, Chi-Yen; Tsai, Ming Shann; Jiang, I. Min.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 40, No. 4 A, 01.04.2001, p. 2255-2258.

Research output: Contribution to journalArticle

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T1 - Diffraction from polymer-stabilized cholesteric texture films

AU - Ko, Tsung Chih

AU - Fan, Yun Hsing

AU - Shieh, Ming Feng

AU - Fuh, Andy Ying Guey

AU - Huang, Chi-Yen

AU - Tsai, Ming Shann

AU - Jiang, I. Min

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AB - 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.

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