Collective escape of chemotactic swimmers through microscopic ratchets.
Collective escape of chemotactic swimmers through microscopic ratchets.
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DOI：
10.1103/physrevlett.104.168102
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发表时间：
2010-04-23
影响因子：
8.6
通讯作者：
Austin RH
中科院分区：
文献类型：
--
作者：
Lambert G;Liao D;Austin RH
我们报告的出现自发形成迁移带大肠杆菌细菌内的微通道含有微结构棘轮。我们发现，收集的细菌是能够通过创建和维持一个化学引诱梯度迁移对漏斗形的障碍。纯整流和趋化性驱动的集体运动之间的过渡从理论模型预测，并观察实验作为初始接种密度是不同的。
We report on the emergence of spontaneously forming migrating bands of E.coli bacteria inside a microchannel containing microstructured ratchets. We show that a collection of bacteria is able to migrate against the funnel-shaped barriers by creating and maintaining a chemoattractant gradient. A transition between pure rectification and chemotaxis-driven collective motion is predicted from theoretical models, and is observed experimentally as the initial inoculation density is varied.