论文标题
在波浪通道中抑制细菌风湿性
Suppression of bacterial rheotaxis in wavy channels
论文作者
论文摘要
例如，控制细菌的游泳行为至关重要，例如，防止管道和导管污染。我们显示，通过可变形的微晶状体建模的细菌可以通过其中心的直线微通道或通道壁附近的以前未知的吸引子积聚。我们预测了通过波浪形微通道中的流量中半融合的微晶状体的新型共振效果。结果，可以以受控的方式偏转Microswimmers，以便它们在频道横截面上分布的调制通道中游泳，而不是在墙壁或通道中心附近局部局部。 因此，根据流量幅度的不同，游泳者的上游方向及其在可能导致表面风湿性的边界的积累都被抑制。我们的结果提出了控制微通道中现场和合成游泳者的行为的新策略。
Controlling the swimming behavior of bacteria is crucial, for example, to prevent contamination of ducts and catheters. We show the bacteria modeled by deformable microswimmers can accumulate in flows through straight microchannels either in their center or on previously unknown attractors near the channel walls. We predict a novel resonance effect for semiflexible microswimmers in flows through wavy microchannels. As a result, microswimmers can be deflected in a controlled manner so that they swim in modulated channels distributed over the channel cross-section rather than localized near the wall or the channel center. Thus, depending on the flow amplitude, both upstream orientation of swimmers and their accumulation at the boundaries which can lead to surface rheotaxis are suppressed. Our results suggest new strategies for controlling the behavior of live and synthetic swimmers in microchannels.
