Acoustic Vibration‐Induced Actuation of Multiple Microrotors in Microfluidics,Advanced Materials Technologies

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Acoustic Vibration‐Induced Actuation of Multiple Microrotors in Microfluidics
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2020-07-22 , DOI: 10.1002/admt.202000323
Yinning Zhou ₁ , Hao Wang ₁ , Zhichao Ma ₂ , Joel K. W. Yang _{1,

3} , Ye Ai ₁

Affiliation

Simultaneous and uniform actuation of multiple microrotors with easy fabrication method has been gathering significant attention in the field of precise microfluidic manipulation. In this work, the use of a piezoelectric vibration stage is presented to achieve the tunable acoustic vibration‐induced actuation of multiple microrotors fabricated by two‐photon polymerization. A series of curved sharp tips are predefined on the microrotors, which can generate paired asymmetric acoustic microstreaming to propel the rotor rotating around the stator with <1 kHz acoustic vibration. Microrotor's rotational speed can be readily controlled by tuning the signal input frequency and the number of rotor arms. A rotational speed of ≈1600 RPM can be achieved by a series of microrotors in aqueous solutions. This method enables easy and versatile microrotor fabrication and remote actuation of multiple rotors with simplicity and uniformity, providing promising solutions in various microfluidic manipulation applications.

中文翻译：

微流体中多个微转子的声振动引起的致动

易于制造的方法同时对多个微转子进行均匀致动已在精确微流体操纵领域引起了广泛的关注。在这项工作中，提出了使用压电振动台来实现由双光子聚合制造的多个微转子的可调声振动诱发的致动。在微转子上预定义了一系列弯曲的尖锐尖端，这些尖端可以产生成对的不对称声微流，从而以小于1 kHz的声振动推动转子绕定子旋转。通过调整信号输入频率和转子臂数，可以轻松控制微转子的转速。一系列微转子可以在水溶液中达到约1600 RPM的转速。

更新日期：2020-09-10

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