Micro-scale opto-thermo-mechanical actuation in the dry adhesive regime
作者机构：Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang ProvinceSchool of EngineeringWestlake University18 Shilongshan RoadHangzhou 310024 Zhejiang ProvinceChina Institute of Advanced TechnologyWestlake Institute for Advanced Study18 Shilongshan RoadHangzhou 310024 Zhejiang ProvinceChina State Key Laboratory of Modern Optical InstrumentationCollege of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2021年第10卷第10期
页 面：1905-1914页
核心收录：
学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学]
基 金：This project was supported by the National Key Research and Development Program of China(2017YFA0205700) the National Natural Science Foundation of China(61927820,61905201,12004313) the China Postdoctoral Science Foundation(2020M671809)
主 题：friction regime absorption
摘 要：Realizing optical manipulation of microscopic objects is crucial in the research fields of life science,condensed matter physics,and physical *** non-liquid environments,this task is commonly regarded as difficult due to strong adhesive surface force(~µN)attached to solid interfaces that makes tiny optical driven force(~pN)***,by recognizing the microscopic interaction mechanism between friction force—the parallel component of surface force on a contact surface—and thermoelastic waves induced by pulsed optical absorption,we establish a general principle enabling the actuation of micro-objects on dry frictional surfaces based on the opto-thermo-mechanical ***,we predict that nanosecond pulsed optical absorption with mW-scale peak power is sufficient to tameµN-scale friction ***,we demonstrate the two-dimensional spiral motion of gold plates on micro-fibers driven by nanosecond laser pulses,and reveal the rules of motion *** results pave the way for the future development of micro-scale actuators in non-liquid environments.
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