Laser-induced rotary micromotor with high energy conversion efficiency

作     者：YU ZHANG SIYU LIN ZHIHAI LIU YAXUN ZHANG JIANZHONG ZHANG JUN YANG LIBO YUAN 

作者机构：Key Laboratory of In-fiber Integrated OpticsMinistry of EducationHarbin Engineering UniversityHarbin 150001China National Demonstration Center for Experimental Physics EducationHarbin Engineering UniversityHarbin 150001China Photonics Research CenterGuilin University of Electronics TechnologyGuilin 541004China 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2020年第8卷第4期

页      面：534-538页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：National Key R&D Program of China(2018YFC1503703) National Natural Science Foundation of China(61975039,61675053,6177504761705051) 111 Project(B13015) Fundamental Research Funds for Harbin Engineering University of China 

主　　题：Laser-induced rotary micromotorhigh energy conversion efficiency 

摘      要：Light is a precious resource that nature has given to human *** green,recyclable light energy into the mechanical energy of a micromotor is undoubtedly an exciting ***,the performance of current light-induced micromotor devices is unsatisfactory,as the light-to-work conversion efficiency is only10-15–*** this paper,we propose and demonstrate a laser-induced rotary micromotor operated byΔα-type photopheresis in pure liquid glycerol,whose energy conversion ratio reaches as high as 10-9,which is 3–6 orders of magnitude higher than that of previous light-induced micromotor *** addition,we operate the micromotor neither with a light field carrying angular momentum nor with a rotor with a special rotating symmetrical *** just employ an annular-core fiber to configure a conical-shaped light field and select a piece of graphite sheet(with an irregular shape)as the ***Δα-type photophoretic force introduced by the conicalshaped light field drives the rotation of the graphite *** achieve a rotation rate up to 818.2 r/min,which can be controlled by tuning the incident laser *** optical rotary micromotor is available for twisting macromolecules or generating vortex and shear force in a medium at the nanoscale.