Light-propagation patterns in freestanding two-dimensional colloidal crystals

Sachiko Matsushita, Masatsugu Shimomura

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

This paper reports the preparation of freestanding two-dimensional (2D) particle arrays, which fine particles are packed in highly dense and oriented manner. To fabricate freestanding 2D arrays, sintering process of the polymer particles (3.06, 1.034, and 0.491 μm diameter) was examined. The sintered 2D particle arrays on glass substrates were easily peeled off as a freestanding film by soaking into water. The freestanding 2D particle arrays were stable enough in room temperature. They show the iridescent colors due to their optical periodicity. To convince the layer number of those freestanding 2D particle arrays, fluorescent polystyrene particles were added in the arrays. Fluorescent light propagation patterns in the arrays suggest that the freestanding films were monolayers. The transmission spectra of the freestanding film were also examined.

Original languageEnglish
Pages (from-to)315-319
Number of pages5
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume284-285
DOIs
Publication statusPublished - 2006 Aug 15
Externally publishedYes

Keywords

  • Evanescent field
  • Particle
  • Photonic crystal
  • Self-assembly
  • Self-organized

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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