论文标题
粘弹性流体中的相互微晶状体
Reciprocal microswimmers in a viscoelastic fluid
论文作者
论文摘要
我们建议几种仅在粘弹性流体中导致运动的相互游泳机制。第一种情况是要在三个球体微型温度的振荡臂运动的两个振幅之间有差异。第二种情况是，对于三个球形微型温度，手臂运动的频率之一是另一个情况的两倍。第三种情况是，对于两个球形微型机器人，球体尺寸有所不同。在所有这三种情况下，平均速度与周围粘弹性介质的复杂剪切粘度的假想部分成正比。对于微型机器，打破其结构对称性至关重要，以便通过进行相互的身体运动在粘弹性流体中游泳。
We suggest several reciprocal swimming mechanisms that lead to a locomotion only in viscoelastic fluids. The first situation is to have a difference between the two amplitudes of the oscillatory arm motion for a three-sphere microswimmer. The second situation is when one of the frequencies of the arm motion is twice as large as the other one for a three-sphere microswimmer. The third situation is when the sphere sizes are different for a two-sphere microswimmer. In all these three cases, the average velocity is proportional to the imaginary part of the complex shear viscosity of a surrounding viscoelastic medium. It is essential for a micromachine to break its structural symmetry in order to swim in a viscoelastic fluid by performing reciprocal body motions.
