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Publication Citation: Three-dimensional Scanning Optical Tweezers

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Author(s): Thomas W. LeBrun; T W. Hwang; I Y. Park; Jun-Feng Song; Yong-Gu Lee; Nicholas G. Dagalakis; Cedric Victor Lucien Gagnon; Arvind K. Balijepalli;
Title: Three-dimensional Scanning Optical Tweezers
Published: December 05, 2005
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.
Conference: International Symposium on Optomechatronic Technologies, Optomechatronic Actuators and Manipulation, Kee S. Moon, Editor, December 2005
Proceedings: Proceedings of SPIE
Volume: 6048
Pages: 12 pp.
Location: Sapporo, JA
Dates: December 5, 2005
Research Areas: Metrology, Manufacturing