Study Of Driving Particles With Double Light Traps Method

With the development of science and the perfect of the machining technology, thedevelopment of micro-machine robot can be started. The micro-motor is the corecomponent of micro-machine robot. At present the drive mode of micro-motor has three:microbes driving, optical driving and electromagnetic driving. The optical drivingcompared to the two additional driving has many advantages such as: high precision canbe control, without friction, big manipulate space and a small amount of additional parts.The main topics in this thesis are as follows:Firstly, the research status of light-induced rotation technology and driving particles inmulti-optical trap method is reviewed.Besides introducing the principle and applicationsof optical tweezers and light-induced rotation.Secondly, the study of driving particles with double light traps method was researched,the experimental system of it was designed. Theoretical studies have shown that Positiverelationship between angular velocity of crystal particles and laser power. The relationshipof angular velocity and the cube of the radius is inverse. The relationship of angularvelocity and thickness of particle is periodicity. The angular velocity will be the biggest,when the circularly polarized light incident to the particle. The theoretical analysis and theexperimental design laid a theoretical foundation for the experimental study of drivingparticles with double light traps method.Finally, the experimental study of driving micro-machine motors with double lighttraps method was completed. The experimental verified the relationship of the angularvelocity and the influencing factors.And this paper build the double optical trappingoptical tweezers experiment system by ourselves and achieved driving particles withdouble light traps method. This paper has been an important role in micro-motor driveresearch and practical applications.