Molecular reorientation of polyimide film induced by thermal nanoimprint lithography and liquid crystals alignment on it

Sudu Siqing, Hui Wu, Atsushi Takahara

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Abstract The molecular orientations of thermally imprinted polyimide (PI) films with different film thickness were investigated by the polarized Fourier-transform infrared spectroscopy (P-FTIR). The results illustrated the molecular orientation in the residual layers and the one in the higher-lines were different. The polymer main chains in the residual layers were perpendicular to the lines and parallel to the substrate. The polymer main chains in the higher-lines were aligned normal to the substrate and CO bonds perpendicular to the main chain were aligned along the line direction. The orientation of liquid crystals on the alignment layer was investigated by atomic force microscopy (AFM) and polarized optical microscopy (POM). The results demonstrated imprinted PI film could be an alignment layer for liquid crystals.

Original languageEnglish
Article number17974
Pages (from-to)113-117
Number of pages5
Journalpolymer
Volume72
DOIs
Publication statusPublished - Jul 22 2015

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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