| Light energy conversion has been at the forefront of scientific research since the beginning of the last century.Light energy conversion materials can convert light energy into other forms of energy and have great potential for applications in energy as well as lighting.In this thesis,we focus on two types of light energy conversion materials,as follows:1.We investigated ZnO/Au nanoparticle materials that convert light energy into kinetic energy and explored their applications in swimming micro/nanomotors.This lightkinetic energy conversion material consists of ZnO micrometer rods with gold nanoparticles modified on the surface.Under UV illumination,the ZnO/Au microrods exhibit a variety of complex kinematic behaviors based on the mechanisms of selfelectrophoresis,self-thermophoresis,or a combination of both.By finely adjusting the UV light irradiation conditions,five different modes of motion can be achieved:rotation around the center of the micron rod,rotation around one end of the micron rod,rotation of the micron rod to a specified angle,helical motion,and translational motion.This lightkinetic energy conversion material can be used as a swimming micro-nano robot for precision motion and environmental purification applications.2.We have investigated titanium dioxide/carbon dot materials that can convert infrared light energy to white light and explored their applications in laser illumination.This infrared light-white light energy conversion material is composed of titanium dioxide coated carbon dot particles.Under the irradiation of infrared light at 10 W/cm2,this infrared light-white light energy conversion material emits stable directional white light in air under the modulation of nonlinear interaction and layered structure.The divergence angle of its white light is only 6°.This infrared light-white light energy conversion material can be applied to the field of laser illumination and is expected to be used in projection and directional illumination. |
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