Microbubble actuator using photothermal effect

摘要

Recently, micro-actuators are attracted attention of advance technology. An optical actuator features characteristics such as energy supplied remotely in wireless and no generation of magnetic noise. In this report, a new type of a micro bubble actuator using photothermal effect is proposed The micro bubble by photothermal effect has advantage that to appear and disappear is easily to control. It is possible to drive micro-scale objects and an optical switch. An experimental set up consists of a laser diode with 450mW of power, water road and an optical microscope as observation. The microbubble is produced irradiated laser beam on to black liquid and/or transparent liquid on the black surface. The size of micro bubble is from 50 to several hundred micro-meters. Three difference methods are proposed such as driving micro object, rotating micro object, and optical switching.