Size resolution with Light Induced Dielectrophoresis (LIDEP)

Steven L. Neale*, Michael Mazilu, Michael Peter MacDonald, John I. B. Wilson, Kishan Dholakia, Thomas F. Krauss

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

We present a study into the small particle size and resolution limits of Light Induced Dielectrophoresis (LIDEP). Here the illumination of a photoconductive layer creates virtual electrodes whose associated electric field gradients cause the dielectrophoretic response of the particles. In this way a potential energy landscape can be created that is optically controlled giving reconfigurable control over a large area [1]. In this paper we discuss the interlinked limits of size of particle it is possible to manipulate and the resolution these particles can be manipulated with. We compare traditional dielectrophoresis (DEP) experiments with LIDEP experiments, and discuss the mechanisms behind the physical limits comparing the effects of carrier diffusion verses the spreading of the electric fields in the medium.

Original languageEnglish
Title of host publicationOptical Trapping and Optical Micromanipulation III
EditorsK Dholakia, GC Spalding
PublisherSPIE
PagesU308-U317
Number of pages10
ISBN (Print)0-8194-6405-8
DOIs
Publication statusPublished - 2006
EventConference on Optical Trapping and Optical Micromanipulation III - San Diego, Canada
Duration: 13 Aug 200617 Aug 2006

Publication series

NamePROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Volume6326
ISSN (Print)0277-786X

Conference

ConferenceConference on Optical Trapping and Optical Micromanipulation III
Country/TerritoryCanada
Period13/08/0617/08/06

Keywords

  • Light Induced Dielectrophoresis (UDEP)
  • optoelectronic tweezers
  • optical tweezers

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