Differential Dynamic Microscopy of Bacterial Motility
Differential Dynamic Microscopy of Bacterial Motility
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DOI：
10.1103/physrevlett.106.018101
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发表时间：
2011-01-05
影响因子：
8.6
通讯作者：
Poon, W. C. K.
中科院分区：
文献类型：
--
作者：
Wilson, L. G.;Martinez, V. A.;Poon, W. C. K.
我们展示了一种快速，高通量的活性粒子的动力学特性的方法。具体来说，我们测量了游泳速度分布和运动细胞的比例在大肠杆菌悬浮液。通过对类似于10（4）个细胞进行平均，与传统跟踪相比，我们的方法是高度准确的，从而产生用于运动性表征的常规工具。我们发现，非运动细胞的扩散率的运动细胞的浓度成比例地增强。
We demonstrate a method for the fast, high-throughput characterization of the dynamics of active particles. Specifically, we measure the swimming speed distribution and motile cell fraction in Escherichia coli suspensions. By averaging over similar to 10(4) cells, our method is highly accurate compared to conventional tracking, yielding a routine tool for motility characterization. We find that the diffusivity of nonmotile cells is enhanced in proportion to the concentration of motile cells.