Constructing 3D crystal templates for photonic band gap materials using holographic optical tweezers

D.C Benito, D.M Carberry, S.H Simpson, G.M Gibson, M.J Padgett, J.G Rarity, M.J Miles, S Hanna

Research output: Contribution to journalArticle (Academic Journal)peer-review

37 Citations (Scopus)

Abstract

A simple and robust method is presented for the construction of 3-dimensional crystals from silica and polystyrene microspheres. The crystals are suitable for use as templates in the production of three-dimensional photonic band gap (PBG) materials. Manipulation of the microspheres was achieved using a dynamic holographic assembler (DHA) consisting of computer controlled holographic optical tweezers. Attachment of the microspheres was achieved by adjusting their colloidal interactions during assembly. The method is demonstrated by constructing a variety of 3-dimensional crystals using spheres ranging in size from 3μm down to 800 nm. A major advantage of the technique is that it may be used to build structures that cannot be made using self-assembly. This is illustrated through the construction of crystals in which line defects have been deliberately included, and by building simple cubic structures.
Translated title of the contributionConstructing 3D crystal templates for photonic band gap materials using holographic optical tweezers
Original languageEnglish
Pages (from-to)13005 - 13015
Number of pages11
JournalOptics Express
Volume16
Issue number17
DOIs
Publication statusPublished - Aug 2008

Bibliographical note

Publisher: Optical Society of America

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