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Electrospray‐Assisted Fabrication of Uniform Photonic Balls
Author(s) -
Moon J. H.,
Yi G.R.,
Yang S.M.,
Pine D. J.,
Park S. B.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200305446
Subject(s) - materials science , electrospray , polystyrene , photonic crystal , fabrication , colloid , nanotechnology , photonics , template , structural coloration , suspension (topology) , chemical engineering , polymer , optoelectronics , composite material , mass spectrometry , chromatography , medicine , chemistry , alternative medicine , mathematics , pathology , homotopy , pure mathematics , engineering
Photonic balls have been fabricated (see Figure) by field‐enhanced electrospray of an aqueous colloidal suspension. The polystyrene (PS) beads inside the suspension droplets self‐organize into opaline balls while the solvent evaporates. The opaline balls are used as templates for inverse opaline photonic balls, and both types exhibit varying reflection colors depending on the diameter of the beads and the reflective index contrast.