Fabrication and characterization of gratings based on thermal shrinkable reactive cholesteric mesogens

Chin Kai Chang, Hui Lung Kuo, Mei Chih Peng

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Gratings were successfully fabricated by photolithography by using a particular reactive cholesteric liquid crystal at two different temperatures. The reflection band of the grating was found to be wider than that of a film having a single helical order, because the grating exhibited a binary helical order. Moreover, the surface topography of the grating was regulated by using photomasks with different pitches. The optical reflection spectrum of this grating structure spans two reflection spectra of cholesteric liquid crystal films that were prepared by UV curing at two heating temperatures. Experimental results reveal that the method proposed in this study can be used to produce broadband circular polarizing films.

Original languageEnglish
Pages (from-to)2439-2441
Number of pages3
JournalOptics Letters
Volume35
Issue number14
DOIs
Publication statusPublished - 2010 Jul 15

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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