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摘要翻译：
人工微尺度游泳者利用其表面催化的化学反应来实现自主推进，其运动在实验上得到了充分的表征。结果表明，在短时间内，它有一个相当大的定向运动分量，其速度依赖于燃料分子的浓度。在更长的时间里，运动恢复到扩散系数大大增强的随机游动。我们的结果为设计人工趋化系统提供了策略。
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英文标题：
《Self-motile colloidal particles: from directed propulsion to random walk》
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作者：
Jonathan R. Howse, Richard A.L. Jones, Anthony J. Ryan, Tim Gough,
Reza Vafabakhsh, and Ramin Golestanian
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最新提交年份：
2007
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分类信息：
一级分类：Physics 物理学
二级分类：Soft Condensed Matter 软凝聚态物质
分类描述：Membranes, polymers, liquid crystals, glasses, colloids, granular matter
膜，聚合物，液晶，玻璃，胶体，颗粒物质
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一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
The motion of an artificial micro-scale swimmer that uses a chemical reaction catalyzed on its own surface to achieve autonomous propulsion is fully characterized experimentally. It is shown that at short times, it has a substantial component of directed motion, with a velocity that depends on the concentration of fuel molecules. At longer times, the motion reverts to a random walk with a substantially enhanced diffusion coefficient. Our results suggest strategies for designing artificial chemotactic systems.
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PDF链接：
https://arxiv.org/pdf/706.4406
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