Digital Design Of Multimaterial Photonic Particles

Keywords

Fluid instabilities; Multimaterial fibers; Optical scattering; Particles

Abstract

Scattering of light from dielectric particles whose size is on the order of an optical wavelength underlies a plethora of visual phenomena in nature and is a foundation for optical coatings and paints. Tailoring the internal nanoscale geometry of such "photonic particles" allows tuning their optical scattering characteristics beyond those afforded by their constitutive materials - however, flexible yet scalable processing approaches to produce such particles are lacking. Here, we show that a thermally induced in-fiber fluid instability permits the "digital design" of multimaterial photonic particles: the precise allocation of high refractive-index contrast materials at independently addressable radial and azimuthal coordinates within its 3D architecture. Exploiting this unique capability in all-dielectric systems, we tune the scattering cross-section of equisized particles via radial structuring and induce polarization-sensitive scattering from spherical particles with broken internal rotational symmetry. The scalability of this fabrication strategy promises a generation of optical coatings in which sophisticated functionality is realized at the level of the individual particles.

Publication Date

6-21-2016

Publication Title

Proceedings of the National Academy of Sciences of the United States of America

Volume

113

Issue

25

Number of Pages

6839-6844

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1073/pnas.1601777113

Socpus ID

84975784643 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84975784643

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