Acoustic waves can act as tweezers to trap and rotate particles without contact, which have promising application in the manipulation of tissues and living cells. Here, we report a realization of acoustic tweezers and motor. The device is fabricated on a silicon chip scaled to manipulate living cells. The silicon chip transfers incident plane ultrasonic waves into a vortex beam, which traps particles in the center of the device and exerts torque on the particles simultaneously. As an illustration, we put living shrimp eggs inside the acoustic vortex and observe the acoustic driving rotation. The rotation frequency of the shrimp egg can be easily controlled, and its relationship between driving voltage and the egg size is established. We anticipate that the acoustic tweezers and motor can find widespread applications in cell manipulation, cell screening, and micro actuator in the future.

中文翻译：

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用于活细胞的声学镊子和马达

声波可以充当镊子，在不接触的情况下捕获和旋转粒子，这在组织和活细胞的操作中具有广阔的应用前景。在这里，我们报告了声学镊子和电机的实现。该设备是在硅芯片上制造的，该芯片可用于操纵活细胞。硅芯片将入射平面超声波转换成涡流束，涡流束将粒子捕获在设备中心并同时对粒子施加扭矩。例如，我们将活虾卵放入声涡旋中，观察声驱动旋转。虾卵的旋转频率容易控制，其驱动电压与鸡蛋大小的关系建立。我们预计声学镊子和电机可以在细胞操作中得到广泛应用，