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Light Pressure Rotator and Light Pressure Rotating Device
A light pressure rotator trapped by irradiation with light and provided with three blades on the side rotating around the optical axis, which is characterized in that reverse torque generating sections are removed.
The three blade rotator is trapped and at the same time roteted by a stongly
focused laser beam as shown in Fig.1. It needs to have high light transmissivity using dielectric materials such as glass, organic substance such as PMMA and resist. To increse the rotation speed, a reverse torque generating sections is removed as shown in Fig.2, and a third side face is inclined as shown in Fig.5. This rotator has the potential application as (1) a micromixiser (1, 2) to promote comvective mixing in a micro chanel on a m- TAS (Lab-on-a-chip) and (2) a take-up tool (3) for the streching and rewinding DNA molecules device (Fig.16). (1) H. Ukita, K. Takada and Y. Itoh: Experimental and theoretical analyses of three dimensional micro-flows generated by an optical mixer, Proc. SPIE 5514, pp.704-711, 2004. (2) Y. Ogami, K. Nishikawa and H. Ukita: Study on the mixing performance of micro optical rotor by CFD, JSME International Journal, B-49, 3, pp.645-652, 2006. (3) H. Ukita and H. Kawashima：Optical Rotor Capable of Controlling Clockwise and Counterclockwise Rotation in Optical Tweezers by Displacing the Trapping Position, Appl. Opt. 49, 10, pp.1991-1996, 2010. To access the rest of the information on this page,
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