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Applied Physics Letters / Volume 96 / Issue 10 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 96, 101108 (2010); http://dx.doi.org/10.1063/1.3358384 (3 pages)

Dielectrophoretically tuneable optical waveguides using nanoparticles in microfluidics

K. Kalantar-zadeh1,2, K. Khoshmanesh3, A. A. Kayani2, S. Nahavandi3, and A. Mitchell2

1Department of Chemical Engineering, MIT, Cambridge, Massachusetts 01239, USA
2School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3001, Australia
3Centre for Intelligent Systems Research, Deakin University, Geelong, Victoria 3217, Australia

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(Received 22 December 2009; accepted 9 February 2010; published online 10 March 2010)

We present a tuneable optical waveguide using dielectrophoretically controlled nanoparticles in microfluidics. Silicon dioxide nanoparticles of different sizes in de-ionized water are channelled through a microfluidic system. An array of microelectrodes generates the dielectrophoretic force to funnel nanoparticles, forming narrowbands at the center of the microfluidics at different applied voltages and frequencies. It is observed that these narrowbands either scatter or guide the coupled light under selected conditions. The realization of such a system offers exciting possibilities for the development of a new class of optofluidics, which are tuned by the positioning of nanoparticles on demand.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

electrophoresis, microfluidics, micro-optomechanical devices, optical waveguides

PACS

  • 42.79.Gn

    Optical waveguides and couplers

  • 85.85.+j

    Micro- and nano-electromechanical systems (MEMS/NEMS) and devices

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3358384

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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