4.6 Article

Bio-inspired artificial iridophores based on capillary origami: Fabrication and device characterization

Journal

APPLIED PHYSICS LETTERS
Volume 99, Issue 14, Pages -

Publisher

AMER INST PHYSICS
DOI: 10.1063/1.3646394

Keywords

bio-inspired materials; biological techniques; biomechanics; bio-optics; capillarity; cellular biophysics; drops; microfabrication; wetting

Funding

  1. United States Air Force Office of Scientific Research (AFOSR) Multi-University Research Initiative (MURI)

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Cephalopods have evolved complex optical mechanisms of dynamic skin color control based on mechanical actuation of micro-scale optical structures such as iridophores and chromatophores. In this work, we describe the design, fabrication, and characterization of bio-inspired artificial iridophores, which resemble microflowers with flexible reflective petals, based on capillary origami microstructures. Two methods of petal actuation have been demonstrated-one based on the electrowetting process and the other by volume change of the liquid droplet. These results were in good agreement with a model derived to characterize the actuation dynamics. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3646394]

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