Independent control of optical stop-band wavelength and width of colloidal photonic crystals

Toshimitsu Kanai, Kotaro Sano, Hiroki Yano, Tsutomu Sawada

Abstract

Tunability of the optical stop-band wavelength and width of charge-stabilized colloidal crystals was examined theoretically and experimentally. Photonic band calculations and reflection spectroscopy indicated that the stop-band wavelength and width could be independently altered over a wide range by the combined variation of the colloidal particle size and concentration. The stop-band width of polystyrene colloidal crystals could be expanded threefold with the combined variation of the particle diameter and particle volume concentration at the fixed stop-band wavelength of red, green, and blue light. This control cannot be achieved in conventional opal-type colloidal crystals, and it is expected that the presented results will contribute towards the advanced applications of colloidal photonic crystals.

Original languageEnglish
Pages (from-to)586-590
Number of pages5
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume506
DOIs
StatePublished - 2016 Oct 5

Fingerprint

Wavelength
Crystals
Photonic crystals
Photonics
Polystyrenes
Particle size
Spectroscopy
Bandwidth

Keywords

  • Colloidal crystals
  • Optical stop-band
  • Photonic band calculation
  • Photonic crystals

ASJC Scopus subject areas

  • Colloid and Surface Chemistry

Cite this

Independent control of optical stop-band wavelength and width of colloidal photonic crystals. / Kanai, Toshimitsu; Sano, Kotaro; Yano, Hiroki; Sawada, Tsutomu.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 506, 05.10.2016, p. 586-590.

Research output: Contribution to journalArticle

Kanai, Toshimitsu; Sano, Kotaro; Yano, Hiroki; Sawada, Tsutomu / Independent control of optical stop-band wavelength and width of colloidal photonic crystals.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 506, 05.10.2016, p. 586-590.

Research output: Contribution to journalArticle

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