Optical Microrheology Using Rotating Laser-Trapped Particles

Bishop, Alexis I., Nieminen, T. A., Heckenberg, N. R. and Rubinsztein-Dunlop, H. (2004) Optical Microrheology Using Rotating Laser-Trapped Particles. Physical Review Letters, 92 19: 198104-1-198104-4.

Document type: Journal Article
Sub-type: Article
Collections: Excellence in Research Australia (ERA) - Collection
School of Physical Sciences Publications
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Author Bishop, Alexis I.
Nieminen, T. A.
Heckenberg, N. R.
Rubinsztein-Dunlop, H.
Title Optical Microrheology Using Rotating Laser-Trapped Particles
Journal name Physical Review Letters  (ERA 2012 Listed)    (ERA 2010 Rank A*)
Publication date 2004-05-01
Sub-type Article
Volume number 92
Issue number 19
ISSN 0031-9007
Start page 198104-1
End page 198104-4
Total pages 4
Editor Blume , M.
Place of publication College Pk
Publisher American Physical Society
Language eng
Subject 249903 Instruments and Techniques
240401 Optics and Opto-electronic Physics
Abstract We demonstrate an optical system that can apply and accurately measure the torque exerted by the trapping beam on a rotating birefringent probe particle. This allows the viscosity and surface effects within liquid media to be measured quantitatively on a micron-size scale using a trapped rotating spherical probe particle. We use the system to measure the viscosity inside a prototype cellular structure.
Keyword optical tweezers
optical torque
Linearly polarized light
laser science
biophotonics
tweezers
orientation
alignment
microrheometer
Q-Index Code C1
 
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Created: Mon, 17 May 2004, 10:00:00 EST by Timo Nieminen on behalf of School of Mathematics & Physics  -  Detailed History