Shape and feature size control of colloidal crystal-based patterns using stretched polydimethylsiloxane replica molds

Hong Kyoon Choi, Sang Hyuk Im, O. Ok Park

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

In this work, we fabricated various patterns using colloidal crystals as master molds via the soft lithography method. Even though colloidal crystals consist of spherical colloidal particles, nonspherical shaped patterns such as rectangular or elongated hexagonal shaped patterns can be fabricated using a stretched polydimethylsiloxane (PDMS) replica mold. The pattern shape and feature size can be easily controlled by changing the stretching axis and ratio of the PDMSreplica mold. The deformations of thePDMSmold were simulated using the finite element method, and they are consistent with experimental results. The elongated patterns were used as templates to offer new types of colloidal crystal superlattice structures. A proposed pattern-control method will significantly expand the usefulness and diversity of micro/ nanopatterning technology.

Original languageEnglish
Pages (from-to)12011-12014
Number of pages4
JournalLangmuir
Volume25
Issue number20
DOIs
Publication statusPublished - 2009 Oct 20
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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