摘要
根据微粒尺度与入射光波长间的关系,给出几何光学模型和电磁模型.详细描述几何光学法、时域有限差分法(FDTD)、有限元法(FEM)、广义洛伦兹-米理论(GLMT)和瑞利散射方法等计算光镊捕获力的理论,并列出T矩阵法、离散偶极子近似法(DDA)、矩量法(MOM)及耦合偶极子法(CDM)等多种数值计算方法.研究表明:在光镊技术中,这些方法可用于不同性质的光束及微粒的研究,其研究方法与过程均有所不同.
According to the relationship between the particles size and incident beam wavelength.The rayoptics model and the electromagnetic model were studied,mainly reviewed the ray-optics method,finite difference time domain,finite element method,generalized lorentz-mie theory and Rayleigh scattering theory,which theories were used to calculate the trapping force.And also set out several numerical methods for solving the light scattering field,such as,T-matrix method,discrete dipole approximation,method of moments and coupled dipole method.The results show that these methods can be used to study different properties of the beams and the particles in the optical tweezers,and the study methods and the processes have some all different.
出处
《华侨大学学报（自然科学版）》
CAS
北大核心
2016年第5期615-621,共7页
Journal of Huaqiao University(Natural Science)
基金
国家自然科学基金资助项目(61178015)
福建省自然科学基金资助项目(2012J05120)
中央高校基本科研业务费专项基金资助项目(JB-ZR1146)
关键词
光镊
光学势阱
几何光学模型
电磁模型
瑞利散射理论
捕获力
optical tweezers
optical potential well
geometric-optical model
electromagnetic model
Rayleigh scattering theory
trapping force
