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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 2 — Mar. 4, 2013

Optical manipulation of self-aligned graphene flakes in liquid crystals

Christopher W. Twombly, Julian S. Evans, and Ivan I. Smalyukh  »View Author Affiliations


Optics Express, Vol. 21, Issue 1, pp. 1324-1334 (2013)
http://dx.doi.org/10.1364/OE.21.001324


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Abstract

Graphene recently emerged as a new two-dimensional material platform with unique optical, thermal and electronic properties. Single- or few-atom-thick graphene flakes can potentially be utilized to form structured bulk composites that further enrich these properties and enable a broad range of new applications. Here we describe optical manipulation of self-aligned colloidal graphene flakes in thermotropic liquid crystals of nematic and cholesteric types. Three-dimensional rotational and translational manipulation of graphene flakes by means of holographic optical tweezers allows for non-contact spatial patterning of graphene, control of liquid crystal defects, and low-power optical realignment of the liquid crystal director using these flakes. Potential applications include optically- and electrically-controlled reconfigurable liquid crystalline dispersions of spontaneously aligning colloidal graphene flakes and new electro-optic devices with graphene-based interconnected transparent electrodes at surfaces and in the bulk of liquid crystals.

© 2013 OSA

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(160.3710) Materials : Liquid crystals
(180.6900) Microscopy : Three-dimensional microscopy
(160.4236) Materials : Nanomaterials

ToC Category:
Optical Trapping and Manipulation

History
Original Manuscript: November 12, 2012
Revised Manuscript: December 24, 2012
Manuscript Accepted: December 24, 2012
Published: January 11, 2013

Virtual Issues
Vol. 8, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Christopher W. Twombly, Julian S. Evans, and Ivan I. Smalyukh, "Optical manipulation of self-aligned graphene flakes in liquid crystals," Opt. Express 21, 1324-1334 (2013)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-21-1-1324


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