Computational Nanotechnology Using Finite Difference Time Domain

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FDTD Simulation of Trapping Microspheres and Nanowires with Optical Tweezers

Jing Li,¹ Chunli Zhu,¹ and Xiaoping Wu²

¹ Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, China²Department of Modern Mechanics, University of Science and Technology of China, China

CONTENTS

5.1 Introduction

5.2 Calculation of Optical Trapping Force

5.2.1 Rayleigh Model

5.2.2 Mie Scattering Model

5.2.3 Region between Geometric and Rayleigh Dimensions

5.3 FDTD Methods

5.4 Application

5.4.1 FDTD Numerical Simulation of the Trapping Force of Microsphere in Single Optical Tweezers

5.4.1.1 Calculation Method

5.4.1.2 Numerical Simulation Results

5.4.1.3 Conclusions

5.4.2 FDTD Simulation of Trapping Nanowires ...