Preparation of highly oriented nano-pit arrays by thermal shrinking of honeycomb-patterned polymer films

Hiroshi Yabu, Ruokun Jia, Yasutaka Matsuo, Kuniharu Ijiro, Sada Aki Yamamoto, Fumiaki Nishino, Toshihiko Takaki, Masahiro Kuwahara, Masatsugu Shimomura

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

The topological changes in honeycomb-patterned films on a stretched polymer film used as a thermally shrinkable substrate were demonstrated. Honeycomb-patterned films were fabricated by applying mosit air to a polymer solution in a Petri dish at room temperature. It is found that the honeycomb structure collapses from circles to hourglass shapes oriented along the shrinking direction of the substrate. The average diameter of the honeycomb-patterned PB films is found to be approximately 3.5 μm. The honeycomb-patterned polymer films shrunk along the two characteristic directions show formation of circular pores deformed to ellipsoidal pits that are regularly arranged along the shrinking direction. The anisotropy of pits is also found to increase with the increasing shrinking direction.

Original languageEnglish
Pages (from-to)4200-4204
Number of pages5
JournalAdvanced Materials
Volume20
Issue number21
DOIs
Publication statusPublished - 2008 Nov 3

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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