Propulsion efficiency of achiral microswimmers in viscoelastic polymer fluids
Propulsion efficiency of achiral microswimmers in viscoelastic polymer fluids
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DOI：
10.1002/aic.17988
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发表时间：
2022-12-15
期刊：
影响因子：
3.7
通讯作者：
Ali，Jamel
中科院分区：
文献类型：
--
作者：
Quashie，David;Gordon，David;Ali，Jamel
我们报告的聚合物的大小，浓度和聚合物流体的粘弹性对非手性微泳推进运动学的影响。磁驱动游泳者的步出频率，方向角和推进效率被证明是依赖于流体的微观结构，粘度和粘弹性。此外，通过探索两种几何上不同的非手性结构的游泳动力学，我们观察到游泳者推进效率的差异。结果表明，较大的四珠游泳者在具有显著弹性的流体中更有效地推进，而较小的三珠游泳者能够利用剪切稀化行为进行有效推进。从这些调查中获得的见解将有助于未来的microswimmer设计和控制策略的发展，针对复杂流体中的应用。
We report the effects of polymer size, concentration, and polymer fluid viscoelasticity on the propulsion kinematics of achiral microswimmers. Magnetically driven swimmer's step‐out frequency, orientation angle, and propulsion efficiency are shown to be dependent on fluid microstructure, viscosity, and viscoelasticity. Additionally, by exploring the swimming dynamics of two geometrically distinct achiral structures, we observe differences in propulsion efficiencies of swimmers. Results indicate that larger four‐bead swimmers are more efficiently propelled in fluids with significant elasticity in contrast to smaller 3‐bead swimmers, which are able to use shear thinning behavior for efficient propulsion. Insights gained from these investigations will assist the development of future microswimmer designs and control strategies targeting applications in complex fluids.