半導体レーザ光ピンセットのトラップカと回転トルクの測定

概要

論文の詳細を見る
A laser optical tweezers (LOT) system was developed by combining a diode laser with an optical microscope equipped with a long working distance objective lens, which can trap, translate, and rotate microparticles. The LOT system was applied to the manipulation of particles, and the optical trapping forces and torque generated with upward-directed and downward-directed laser beams were measured by changing the laser power. The experimental results showed that trapping forces and torque in the order of 10^<-12> N and 10^<-20> Nm, respectively, were generated under the present condition, and both were linearly proportional to the power of the laser. It was also found that the trapping forces with the downward-directed laser beam were greater than those with the upward-directed laser beam, and the torque was vice versa.
中部大学の論文
2005-12-15