Fabrication of superhydrophobic surfaces with nano-in-micro structures using UV-nanoimprint lithography and thermal shrinkage films

Young Hoon Sung, Yang Doo Kim, Hak Jong Choi, Ryung Shin, Shinill Kang, Heon Lee

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

After forming the nanoscale pillar patterns on the thermal shrinkage films (TSFs) with nano imprint lithography (NIL), the TSFs were shrunk. Thus, the nano- and microscale complex structures which have superhydrophobic and oleophobic surfaces with nano- and micro-patterns were created. The nano- and microscale complex-patterned (NMCP) TSFs were then coated with a self-assembled monolayer to reduce the surface energy of the structures. After the surface treatment, the contact angle of water on NMCP was measured to be 150.3°, with the films exhibiting self-cleaning behavior. We used the NMCP TSF as a master stamp. By using UV-nanoimprint lithography, the NMCP pattern of polyurethane acrylate was successfully duplicated on a glass substrate. The duplicated NMCP pattern from master stamp had a contact angle with water of 149.8° with superhydrophobicity.

Original languageEnglish
Pages (from-to)169-173
Number of pages5
JournalApplied Surface Science
Volume349
DOIs
Publication statusPublished - 2015 Sep 15

Keywords

  • Hierarchical structure
  • Nano imprint lithography
  • Super hydrophobic
  • Thermal shrinkage film

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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