Homogeneous liquid crystal alignment on inorganic-organic hybrid silica thin films derived by the sol-gel method

Soo Sang Chae, Byoung Har Hwang, Woo Soon Jang, Jin Young Oh, Jee Ho Park, Se Jong Lee, Kie Moon Song, Hong Koo Baik

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

We developed an inorganic-organic hybrid thin film via the sol-gel method for a new liquid crystal alignment layer and investigated the influence of an organic species on the alignment characteristics of the liquid crystals (LCs). A thin film of methyl-doped amorphous silicon oxide (a-SiO x:CH 3) was fabricated from the hydrolysis and condensation reaction of the initial precursors of methyltriethoxysilane (MTES) and tetraethoxysilane (TEOS) at a proper ratio. A low-energy ion beam (IB) treatment gives rise to the homogeneous alignment of LC in an IB condition on a-SiO x:CH 3 thin film; however, it is difficult to control the LC alignment on a-SiO x thin film derived only from TEOS as a precursor. The LC alignment depending on the chemical structure of the silica thin film was investigated and analyzed in terms of the sensitivity of the axis-selective destruction of the chemical bonding on the surface of the thin silica film.

Original languageEnglish
Pages (from-to)1437-1442
Number of pages6
JournalSoft Matter
Volume8
Issue number5
DOIs
Publication statusPublished - 2012 Feb 7

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Homogeneous liquid crystal alignment on inorganic-organic hybrid silica thin films derived by the sol-gel method'. Together they form a unique fingerprint.

Cite this