Trochoidal trajectories of self-propelled Janus particles in a diverging laser beam

Moyses Henrique; Palacci Jeremie; Sacanna StefanoGrier David G.

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Trochoidal trajectories of self-propelled Janus particles in a diverging laser beam

机译：余摆线的自行式Janus的轨迹粒子在一个不同的激光束

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We describe colloidal Janus particles with metallic and dielectric faces that swim vigorously when illuminated by defocused optical tweezers without consuming any chemical fuel. Rather than wandering randomly, these optically-activated colloidal swimmers circulate back and forth through the beam of light, tracing out sinuous rosette patterns. We propose a model for this mode of light-activated transport that accounts for the observed behavior through a combination of self-thermophoresis and optically-induced torque. In the deterministic limit, this model yields trajectories that resemble rosette curves known as hypotrochoids.

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来源
《Soft matter》 |2016年第30期|6357-6364|共8页
作者
Moyses Henrique; Palacci Jeremie; Sacanna StefanoGrier David G.;
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作者单位

Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA;

NYU, Dept Chem, New York, NY 10003 USA;

NYU, Dept Phys, New York, NY 10003 USA;

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正文语种英语
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关键词
laser beams; Janus particles; CHEMICAL FUELSHypotrochoiddeterministictrajectoryLIGHT ACTIVATEDlight beamsSELF PROPELLED;

机译：激光束,Janus粒子;化学FUELSHypotrochoiddeterministictrajectoryLIGHTACTIVATEDlight beamsSELF推动;

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Trochoidal trajectories of self-propelled Janus particles in a diverging laser beam

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