Orientation of biological cells using plane-polarized Gaussian beam optical tweezers

Details Orientation of biological cells using plane-polarized Gaussian beam optical tweezers Orientation of biological cells using plane-polarized Gaussian beam optical tweezers

2003-08-28

arxiv.org/abs/physics/0308105v1

Journal of Modern Optics 50(10), 1581-1590 (2003)

Physics

Optics

9 pages, 6 figures

Scientific paper

10.1080/0950034031000069497

Optical tweezers are widely used for the manipulation of cells and their internal structures. However, the degree of manipulation possible is limited by poor control over the orientation of trapped cells. We show that it is possible to controllably align or rotate disc shaped cells - chloroplasts of Spinacia oleracea - in a plane polarised Gaussian beam trap, using optical torques resulting predominantly from circular polarisation induced in the transmitted beam by the non-spherical shape of the cells.

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