Microchannel-flowed-plasma modification of octadecyltrichlorosilane self-assembled-monolayers for liquid crystal alignment

WENJUN ZHENG, I. Underwood

Research output: Contribution to journalArticlepeer-review

Abstract

We report that a chemical patterning technique based on local plasma modification of self-assembled monolayers has been utilized to fabricate surfaces for domain liquid crystal alignment.Highly hydrophobic octadecyltrichlorosilane monolayers deposited on glass substrates coated with Indium-Tin-Oxide were brought into contact with elastomeric stamps comprising trenches on a micro scale, and then exposed to an oxygen plasma.In the regions exposed to the plasma the monolayer was etched away leaving a patterned surface that exhibited surface energy differences between surface domains.The surfaces that bear the micropatterns have been shown to be capable of producing patterned alignment of nematic liquid crystal.

Original languageEnglish
Pages (from-to)371-374
Number of pages4
JournalThin Solid Films
Volume545
DOIs
Publication statusPublished - 31 Oct 2013

Keywords

  • Domain liquid crystal alignment
  • Micropatterning surface
  • Plasma modification
  • Self assembled monolayer

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