摘要翻译:
我们发现,最近的实验观察表明,在一个具有非对称屏障阵列的系统中,游动细菌的纠正是由于细菌“马达”引入的细菌轨迹的弹道成分而发生的。每个细菌选择一个随机的运动方向,然后沿着这个方向运动一段固定的时间,然后随机改变方向,朝着新的方向运动。在细菌只经历布朗运动的极限中,屏障的纠正是不发生的。我们还检查了细菌之间的空间相互作用的影响,并观察到细菌密度增加时的堵塞效应。
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英文标题:
《Rectification of Swimming Bacteria and Self Driven Particle Systems by
Arrays of Asymmetric Barriers》
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作者:
M. B. Wan, C. J. Olson Reichhardt, Z. Nussinov and C. Reichhardt
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最新提交年份:
2008
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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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一级分类:Quantitative Biology 数量生物学
二级分类:Cell Behavior 细胞行为
分类描述:Cell-cell signaling and interaction; morphogenesis and development; apoptosis; bacterial conjugation; viral-host interaction; immunology
细胞-细胞信号传导及相互作用;形态发生和发育;细胞凋亡;细菌接合;病毒-宿主相互作用;免疫学
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英文摘要:
We show that the recent experimental observation of the rectification of swimming bacteria in a system with an array of asymmetric barriers occurs due to the ballistic component of the bacteria trajectories introduced by the bacterial "motor." Each bacteria selects a random direction for motion and then moves in this direction for a fixed period of time before randomly changing its orientation and moving in a new direction. In the limit where the bacteria undergo only Brownian motion, rectification by the barriers does not occur. We also examine the effects of steric interactions between the bacteria and observe a clogging effect upon increasing the bacteria density.
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PDF链接:
https://arxiv.org/pdf/708.3096


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