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arXiv 1401.6944cond-mat.stat-mechcond-mat.soft
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散斑场中的运动粒子

Run-and-tumble particles in speckle fields

M. Paoluzzi, R. Di Leonardo, L. Angelani

摘要:

由散斑场产生的随机能量景观可以用来用单个激光束约束和操纵大量的微观粒子。通过分子动力学模拟,我们研究了嵌入散斑图的游动细菌活性悬浮液的静态和动态特性。看着密度波动和平衡密度分布的相关性,我们观察到的交叉现象时,由斑点施加的力等于细菌的推进。

英文摘要:

The random energy landscapes developed by speckle fields can be used to confine and manipulate a large number of micro-particles with a single laser beam. By means of molecular dynamics simulations, we investigate the static and dynamic properties of an active suspension of swimming bacteria embedded into speckle patterns. Looking at the correlation of the density fluctuations and the equilibrium density profiles, we observe a crossover phenomenon when the forces exerted by the speckles are equal to the bacteria's propulsion.

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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