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Proceedings Paper

Three-dimensional scanning optical tweezers
Author(s): Sun-Uk Hwang; In-Yong Park; Je-Hoon Song; Yong-Gu Lee; Thomas LeBrun; Nicholas Dagalakis; Cedric Gagnon; Arvind Balijepalli
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Paper Abstract

There are several new tools for manipulating microscopic objects. Among them, optical tweezers (OT) has two distinguishing advantages. Firstly, OT can easily release an object without the need of a complicated detaching scheme. Secondly, it is anticipated to manipulate an object with six degrees of freedom. OT is realized by tightly focusing a laser beam on microscopic objects. Grabbing and releasing is easily done by turning a laser beam on and off. For doing a dexterous manipulation on an object, a complicated potential trap must be calculated and applied. We foresee that such calculation method will be developed in the near future. One of the candidates for implementing the calculated trap is scanning optical tweezers (SOT). SOT can be built by using actuators with a scanning frequency in the order of a hundred Hertz. We need fast scanners to stably trap an object. In this study, we present our design of such SOT. The SOT uses piezo-actuated tilt mirror and objective positioner to scan full three-dimensional workspace.

Paper Details

Date Published: 5 December 2005
PDF: 12 pages
Proc. SPIE 6048, Optomechatronic Actuators and Manipulation, 604803 (5 December 2005); doi: 10.1117/12.644463
Show Author Affiliations
Sun-Uk Hwang, Gwangju Institute of Science and Technology (South Korea)
In-Yong Park, Gwangju Institute of Science and Technology (South Korea)
Je-Hoon Song, Gwangju Institute of Science and Technology (South Korea)
Yong-Gu Lee, Gwangju Institute of Science and Technology (South Korea)
Thomas LeBrun, National Institute of Standards and Technology (United States)
Nicholas Dagalakis, National Institute of Standards and Technology (United States)
Cedric Gagnon, National Institute of Standards and Technology (United States)
Arvind Balijepalli, National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 6048:
Optomechatronic Actuators and Manipulation
Kee S. Moon, Editor(s)

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