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Visualization 3-Dispersion of trapped particles in an ellipsoidal potential well.mp4

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posted on 2024-07-31, 16:01 authored by Guanghui Wang, feng xu, yarong yu, yang liu, yao chang, wenxiang jiao, lin wang, hopui ho, bei wu, fei xu, yanqing lu, yuanjie pang
Visualization 3 shows the simulation results of the dispersion and movement of 300-nm particles in the different dimensions of a focused Gaussian beam with the same relative velocity, namely as an ellipsoidal potential well. It is obvious that the well width in the vertical direction (red) is wider than the width in the propagation direction (blue), so the critical velocity in the vertical direction is less, and the influence of the relative motion is more significant. It can be found that when almost all the particles (escape ratio is more than 99%) in the vertical direction potential well have escaped only 40% of the particles in the propagation direction potential well have escaped. This case is very common in the actual optical tweezer experiment system because of the thermal convection.

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