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arXiv physics/0308105physics.optics
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利用平面偏振高斯光束光镊对生物细胞进行定向

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

S. Bayoudh, T. A. Nieminen, N. R. Heckenberg, H. Rubinsztein-Dunlop

摘要:

光镊被广泛应用于细胞及其内部结构的操纵。然而,操作的可能程度受到对捕获细胞的取向的不良控制的限制。我们表明,它是可能的可控地对齐或旋转盘形细胞-菠菜叶绿体-在平面偏振高斯光束陷阱,使用光学扭矩主要是从圆偏振引起的透射光束中的非球形形状的细胞。

英文摘要:

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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