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- W3113553412 abstract "自驱动粒子在靠近边界尤其是平面上障碍物的边界时, 会展现出奇特的运动行为. 本文通过实验研究了固定于平面上的微米级障碍物的几何效应(包括大小和形状)对双氧水驱动的Janus微球运动行为的影响. 实验结果表明, 当障碍物尺寸超过临界值后, 自驱动的Janus微球会被其“捕获”并沿着其边界定向运动. 自驱动粒子在障碍物边界的停留时间及运动速率随着双氧水浓度的增加而增大, 且其在圆柱形障碍物边界和球形障碍物边界的停留时间及运动速率均随着障碍物直径的增加而增大. 但在相同的双氧水浓度和障碍物直径条件下, 自驱动粒子在圆柱边界上的停留时间比其在球形障碍物边界上长; 在圆柱边界上的运动速率比在球形障碍物边界上小, 揭示了自驱动粒子在障碍物边界上的运动行为与障碍物的几何特性密切相关. 本研究有助于进一步理解自驱动粒子在不同大小及形状的障碍物中的运动特征, 掌握并利用这些特征在诸如设计特殊几何形状来引导自驱动粒子的运动等领域有很好的应用价值." @default.
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- W3113553412 date "2019-01-01" @default.
- W3113553412 modified "2023-09-27" @default.
- W3113553412 title "The dynamics of self-propelled Janus microspheres near obstacles with different geometries" @default.
- W3113553412 doi "https://doi.org/10.7498/aps.68.20190711" @default.
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