光俘获聚合物纳米纤维的旋转动力学
Rotational dynamics of optically trapped polymeric nanofibers
摘要：
报道了聚合物纳米纤维的光捕获及其旋转动力学特性。本文提出了一种利用对称线偏振高斯光束倾斜被困光纤，对聚合物光纤施加扭矩的方法。旋转频率高达10赫兹的测量，这取决于捕获功率，光纤长度和倾斜角。在不同的捕获配置的实验旋转频率与计算的基础上，通过T矩阵形式主义的线性纳米结构的光学捕获和旋转的比较，准确地再现测量数据，提供了一个全面的描述的捕获和旋转动力学。
英文摘要：
The optical trapping of polymeric nanofibers and the characterization of the rotational dynamics are reported. A strategy to apply a torque to a polymer nanofiber, by tilting the trapped fibers using a symmetrical linear polarized Gaussian beam is demonstrated. Rotation frequencies up to 10 Hz are measured, depending on the trapping power, the fiber length and the tilt angle. A comparison of the experimental rotation frequencies in the different trapping configurations with calculations based on optical trapping and rotation of linear nanostructures through a T-Matrix formalism, accurately reproduce the measured data, providing a comprehensive description of the trapping and rotation dynamics.
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