Shape-Dependent Motion of Structured Photoactive Microswimmers
Shape-Dependent Motion of Structured Photoactive Microswimmers
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DOI：
10.1021/acsami.8b01940
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发表时间：
2018-05-30
影响因子：
9.5
通讯作者：
Gibbs, John G.
中科院分区：
文献类型：
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作者：
Nicholls, Dylan;DeVerse, Andrew;Gibbs, John G.
我们研究了结构化光敏微型游泳器的动力学，并表明形态敏感地决定了游泳行为。特别是在这项研究中，光激活粒子的底层结构的主要部分是由光催化材料构建的，这是通过动态物理气相沉积（DPVD）实现的。我们发现这种类型的游泳者表现出独特的形状依赖性自主游泳，这与具有相似结构形态但不是直接由催化剂制造的系统中所看到的不同。值得注意的是，运动方向是这些参数的函数。由于游泳行为与颗粒形状和材料成分密切相关，因此 DPVD 允许通过调整制造参数来匹配所需的性能来设计小规模推进装置。
We investigate the dynamics of structured photoactive microswimmers and show that morphology sensitively determines the swimming behavior. Particular to this study, a major portion of the light-activated particles' underlying structure is built from a photo catalytic material, made possible by dynamic physical vapor deposition (DPVD). We find that swimmers of this type exhibit unique shape dependent autonomous swimming that is distinct from what is seen in systems with similar structural morphology but not fabricated directly from the catalyst. Notably, the direction of motion is a function of these parameters. Because the swimming behavior is strongly correlated with particle shape and material composition, DPVD allows for engineering small-scale propulsion by adjusting the fabrication parameters to match the desired performance.