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

  title={Orientation of biological cells using plane-polarized Gaussian beam optical tweezers},
  author={S. Bayoudh and Timo A. Nieminen and Norman R. Heckenberg and Halina Rubinsztein-Dunlop},
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… CONTINUE READING
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