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Proceedings Paper

An experimental setup for combining optical tweezers and laser scalpels with advanced imaging techniques
Author(s): Mattias Goksor; Jonas Enger; Kerstin Ramser; Dag Hanstorp
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Paper Abstract

In this paper we will describe a system designed to combine optical tweezers and laser scalpels with confocal as well as epi-fluorescence microscopy. A continuos wave Nd:YVO4 laser is used to produce a dual optical tweezers, where each trap can be individually controlled. A second optical tweezers setup is based on a tunable titanium sapphire laser, which allows us to adjust the wavelength to minimize the damage to the cell under investigation. A pulsed nitrogen laser working at 337 nm forms a laser scalpel. The tweezers and scalpels are both incorporated in an inverted microscope equipped with epi-fluorescence and confocal imaging capabilities. In order to further control the sample we have developed a technique to tailor make the environment closest to the studied objects. Micrometer-sized structures such as channels and reservoirs have been produced in rubber silicon using lithographic methods. In combination with a micro-manipulator, our system can be used to extract single cells from a population of billions for further studies or growth.

Paper Details

Date Published: 18 July 2003
PDF: 8 pages
Proc. SPIE 4966, Microarrays and Combinatorial Technologies for Biomedical Applications: Design, Fabrication, and Analysis, (18 July 2003); doi: 10.1117/12.501010
Show Author Affiliations
Mattias Goksor, Chalmers Univ. of Technology (Sweden)
Goeteborg Univ. (Sweden)
Jonas Enger, Chalmers Univ. of Technology (Sweden)
Goeteborg Univ. (Sweden)
Kerstin Ramser, Chalmers Univ. of Technology (Sweden)
Goeteborg Univ. (Sweden)
Dag Hanstorp, Chalmers Univ. of Technology (Sweden)
Goeteborg Univ. (Sweden)


Published in SPIE Proceedings Vol. 4966:
Microarrays and Combinatorial Technologies for Biomedical Applications: Design, Fabrication, and Analysis
Dan V. Nicolau; Ramesh Raghavachari, Editor(s)

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