| 摘要 |
PROBLEM TO BE SOLVED: To provide a particle-controlling device capable of evaluating the state of optical trap created by an optical vortex for a particle.SOLUTION: A particle-controlling device 1 is configured to control the movement of a particle in a medium of a sample 90 and comprises a light source 10, an optical vortex generation unit 20, an objective lens 30, an imaging unit 60, an analysis unit 70, and a transfer unit 80. The analysis unit 70: acquires first movement information of the particle on the basis of image data outputted from the imaging unit 60 that imaged the particle optically trapped in an optical vortex, when the convergence position of the optical vortex created using an objective lens 30 is set at a first position; acquires second movement information of the particle on the basis of image data outputted from the imaging unit 60 that imaged the particle optically trapped in the optical vortex, when the convergence position of the optical vortex is set at a second position; and evaluates the state of the optical trap created by the optical vortex for the particle by comparing the first movement information and the second movement information. |
