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Recording of Virtual Disclination Lines by Means of Surface Polymerization in a Nematic Liquid Crystal

2005; Taylor & Francis; Volume: 438; Issue: 1 Linguagem: Inglês

10.1080/15421400590954515

1563-5287

David Pires, Y. Galerne,

Liquid Crystal Research Advancements

ABSTRACT ABSTRACT On performing an in-situ UV-polymerization of tri-acrylate in 5CB nematic samples, we observe the formation of a film onto the cell plates that is able to record virtual disclination lines. This memory effect evidences that the director orientation is imprinted onto the substrates during the polymerization process. Interestingly here, the nematic phase works twice, at the writing and at the reading stages. Keywords: imprintingmemory effectphoto-polymervirtual disclination line Acknowledgments D. Pires thanks the Fundação para a Ciência e Tecnologia of the Ministério da Ciência e do Ensino Superior – Portugal, for the PhD Scholarship SFRH/BD/10168(2002).