抄録
Selective mass transport technique is a key issue of microminiaturizing the analytical equipment. A particle transport control was developed by using laser radiation pressure generated in a microchannel, by which particles on the order of micron meter are trapped at the laser focused area. In a flow field one or two elliptical shaped laser focused area was generated near a micro nozzle in order to control particles behavior. Ratio of the number of particles that left from single-focused laser radiation pressure was calculated from observed images captured by a CCD camera. In the present experiment, an optical nozzle was made to control the particle concentration using dual-focused laser radiation pressure.
