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arXiv physics/0305042physics.opticsphysics.comp-ph
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用耦合偶极子法确定介质平板上粒子所受的电磁力

Coupled Dipole Method Determination of the Electromagnetic Force on a Particle over a Flat Dielectric Substrate

P. C. Chaumet, M. Nieto-Vesperinas

摘要:

本文提出了一种用耦合偶极子法(CDM)计算光对介质平面上粒子的作用力的理论。我们表明,与此过程中,两个等效的分析方法是可能的,都基于麦克斯韦应力张量。使用这种方法的兴趣在于对象的性质和大小或形状可以是任意的。甚至,可以并入衬底的存在。为了验证我们的理论,我们提出了一个解析表达式的力量,由于光作用在一个粒子的存在,或不存在,一个表面。照亮球体的平面波可以是传播的,也可以是瞬逝的。二维和三维计算进行了研究。

英文摘要:

We present a theory to compute the force due to light upon a particle on a dielectric plane by the Coupled Dipole Method (CDM). We show that, with this procedure, two equivalent ways of analysis are possible, both based on Maxwell's stress tensor. The interest in using this method is that the nature and size or shape of the object, can be arbitrary. Even more, the presence of a substrate can be incorporated. To validate our theory, we present an analytical expression of the force due to the light acting on a particle either in presence, or not, of a surface. The plane wave illuminating the sphere can be either propagating or evanescent. Both two and three dimensional calculations are studied.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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