Optimization of optically-driven micromachines

Loke, Vincent L. Y., Asavei, Theodore, Nieminen, Timo A., Heckenberg, Norman R. and Rubinsztein-Dunlop, Halina (2009). Optimization of optically-driven micromachines. In: Kishan Dholakia and Gabriel C. Spalding, Optical Trapping and Optical Micromanipulation VI. Optical Trapping and Optical Micromanipulation VI, San Diego, United States, (74001Z-1-74001Z-11). 2-6 August 2009. doi:10.1117/12.828423

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Author Loke, Vincent L. Y.
Asavei, Theodore
Nieminen, Timo A.
Heckenberg, Norman R.
Rubinsztein-Dunlop, Halina
Title of paper Optimization of optically-driven micromachines
Conference name Optical Trapping and Optical Micromanipulation VI
Conference location San Diego, United States
Conference dates 2-6 August 2009
Proceedings title Optical Trapping and Optical Micromanipulation VI   Check publisher's open access policy
Journal name Proceedings of SPIE - International Society for Optical Engineering   Check publisher's open access policy
Place of Publication Bellingham, WA, United States
Publisher S P I E - International Society for Optical Engineering
Publication Year 2009
Sub-type Fully published paper
DOI 10.1117/12.828423
Open Access Status File (Publisher version)
ISBN 9780819476906
ISSN 0277-786X
Editor Kishan Dholakia
Gabriel C. Spalding
Volume 7400
Start page 74001Z-1
End page 74001Z-11
Total pages 11
Collection year 2010
Language eng
Abstract/Summary While a variety of different optically-driven micromachines have been demonstrated by a number of groups around the world, there is a striking similarity in the designs used. The typical optically-driven rotor consists of a number of arms attached to a central hub, or elongated stalk in the case of free-floating rotors. This is a consequence of the relationship between the symmetry of a scattering object and the transfer of optical angular momentum from a beam to the object. We use a hybrid discrete-dipole approximation/T-matrix method algorithm to computationally model the scattering by such optically-driven rotors. We systematically explore the effects of the most important parameters of rotors, such as the thickness, length, and width of the arms, in order to maximize the torque efficiency. We show that it is possible to use computational modelling to optimize the design of such devices. We also compare the computational results with experiment.
Subjects E1
970102 Expanding Knowledge in the Physical Sciences
0205 Optical Physics
Keyword Micromachines
Symmetry optimization
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article number 74001Z Copyright 2009 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

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Created: Tue, 13 Apr 2010, 16:16:56 EST by Jo Hughes on behalf of Physics