Piezoelectric ultrasonic resonant motor with stator diameter less than 250 μm: the Proteus motor
Piezoelectric ultrasonic resonant motor with stator diameter less than 250 μm: the Proteus motor
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DOI：
10.1088/0960-1317/19/2/022001
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发表时间：
2009-02-01
影响因子：
2.3
通讯作者：
Yeo, L.
中科院分区：
文献类型：
--
作者：
Watson, B.;Friend, J.;Yeo, L.
Minimally invasive and in vivo surgery is limited by the ability to provide controllable and powerful motion at scales appropriate for navigation within the human body. A motor for in vivo microbot propulsion is presented with a stator diameter of phi 250 mu m, demonstrating the potential to directly drive a flagellum for swimming at up to 1295 rpm with a torque of 13 nN m. The motor uses coupled axial-torsional vibration at 652-682 kHz in a helically cut structure excited by a thickness-polarized piezoelectric element. The output power is 4.25 mu W, on the order of what is necessary to navigate small human arteries.
