在瑞利区域中散射laser辐射的球形纳米颗粒的粘性运动
Viscous motion of spherical nanoparticles that scatter laser radiation in the Rayleigh regime
摘要：
分析了纳米球在激光场中运动的横向辐射粘性机理。结果表明，在光散射过程中，除了使粒子在辐射传播方向上加速的力Fs和由光场空间不均匀性引起的梯度力Fg外，还有使粒子在横向上运动减慢的力Fvisc。这些光粘性力是由于散射辐射频率的多普勒频移造成的。这些力的一般表达式作用于粒子散射辐射在瑞利政权的推导和应用，以估计其效果悬浮的纳米球，也对慢电子移动的激光和磁场。讨论了观测光粘滞效应的可能实验。
英文摘要：
The mechanism of transverse radiation viscosity for nanospheres moving in laser field is analyzed. It is demonstrated that in the process of light scattering by these particles besides the force Fs accelerating them in the direction of radiation propagation and the gradient force Fg that is due to the spatial inhomogeneity of the light field, there are forces Fvisc that slow down the movement of particles in the transverse directions. These light viscosity forces are due to the Doppler shift in frequency of scattered radiation. The general expressions for these forces acting on particles that scatter radiation in the Rayleigh regime are derived and applied to estimate their effect on levitated nanospheres and also on slow electrons moving in the laser and magnetic fields. The possible experiments for observation the effects of light viscosity is discussed.
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