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Proceedings Paper

Engineering optically driven micromachines
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Paper Abstract

Optical forces and torques acting on microscopic objects trapped in focussed laser beams promise flexible methods of driving micromachines through a microscope cover slip or even a cell wall. We are endeavouring to engineer special purpose micro-objects for a range of tasks. Colloidal self assembly of calcium carbonate provides birefringent spheres which can exert considerable torque, while two photon polymerisation allows us to fabricate objects of arbitrary shape that can be designed to exchange both spin and orbital angular momentum. Numerical calculations of forces and torques can allow an optimal design, and optical measurements provide us with certain knowledge of the forces and torques which are actually exerted.

Paper Details

Date Published: 29 August 2008
PDF: 7 pages
Proc. SPIE 7038, Optical Trapping and Optical Micromanipulation V, 703816 (29 August 2008); doi: 10.1117/12.798529
Show Author Affiliations
Theodor Asavei, The Univ. of Queensland (Australia)
Simon Parkin, The Univ. of Queensland (Australia)
Martin Persson, The Univ. of Queensland (Australia)
Robert Vogel, The Univ. of Queensland (Australia)
Maren Funk, The Univ. of Queensland (Australia)
Vincent Loke, The Univ. of Queensland (Australia)
Timo Nieminen, The Univ. of Queensland (Australia)
Halina Rubinsztein-Dunlop, The Univ. of Queensland (Australia)
Norman Heckenberg, The Univ. of Queensland (Australia)


Published in SPIE Proceedings Vol. 7038:
Optical Trapping and Optical Micromanipulation V
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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