Simulation of forces on Mie micro-particles in laser trap

摘要：

This paper concerns the mathematical model and simulation of forces on Mie micro-particles in laser trap. To make the mathematical models suitable for particles with arbitrary shape, the surface of Mie particle is divided into many microplanes, then the radiation pressure resulting from the interaction between a single incident light and a micro-plane and a individual ray tracing is obtained using the geometrical optical theory. A computer simulation program based on this mathematical model is designed to calculate the trapping force on Mie micro-particles with arbitrary shape (sphere, cone, polyhedron and particle with smooth surface).The simulation result for the trapping forces of spherical particles is consistent with that in reference 1, and comparisons are made between spherical particles and spherical particles reconstructed from NURBS, and between conical particles and conical particles reconstructed from polyhedron. These results verify the simulation program, so it can be an effective design and analysis tool for the application of laser trapping in nanometer testing and manufacturing.

关键词： laser trap Mie micro-particles arbitrary shape simulation

作者: Xiao-na WANG Jian BAI Tian-tai GUO Bo FANG

作者单位: China Jiliang University, Hangzhou310018, China State Key Laboratory of Modern Optical Instruments, Zhejiang University, Hangzhou310027,China

会议类型: 国际会议

会议名称: 第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology

会议地点: 沈阳

会议语种:英文

页码: 1-7

在线出版日期: 2008-09-15（万方平台首次上网日期，不代表论文的发表时间）