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Self-assembled biomimetic antireflection coatings

Appl. Phys. Lett. 91, 101108 (2007); doi:10.1063/1.2783475

Published 6 September 2007

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Nicholas C. Linn, Chih-Hung Sun, and Peng Jiang
Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611

Bin Jiang
Department of Mathematics and Statistics, Portland State University, Portland, Oregon 97201
The authors report a simple self-assembly technique for fabricating antireflection coatings that mimic antireflective moth eyes. Wafer-scale, nonclose-packed colloidal crystals with remarkable large hexagonal domains are created by a spin-coating technology. The resulting polymer-embedded colloidal crystals exhibit highly ordered surface modulation and can be used directly as templates to cast poly(dimethylsiloxane) (PDMS) molds. Moth-eye antireflection coatings with adjustable reflectivity can then be molded against the PDMS master. The specular reflection of replicated nipple arrays matches the theoretical prediction using a thin-film multilayer model. These biomimetic films may find important technological application in optical coatings and solar cells. ©2007 American Institute of Physics
History: Received 30 July 2007; accepted 20 August 2007; published 6 September 2007
Permalink: http://link.aip.org/link/?APPLAB/91/101108/1
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KEYWORDS and PACS

Keywords
PACS
  • 81.05.Lg
    Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials: fabrication, treatment, testing and analysis
  • 81.16.Dn
    Self-assembly in nanofabrication and processing
  • 81.15.Lm
    Liquid phase epitaxy; deposition from liquid phases (melts, solutions, and surface layers on liquids)
  • 68.55.Ac
    Thin film nucleation and growth: microscopic aspects
  • 78.66.Qn
    Optical properties of polymers; organic compounds (thin films)
  • 78.20.Ci
    Optical constants including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity
  • YEAR: 2007

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
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REFERENCES (28)
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