Abstract
This paper presents the trial of developing a miniature energy harvesting device for medical microrobot devised working in blood vessel for example in an artery, specifically focusing on fabrication of co-axial nanofibers as converting components from a high efficient piezoelectric material-Polyvinylidene Fluoride (PVDF). It is very meaningful to build up an effective miniature device to collect energy from environment or receive energy transferred in wireless way especially when the microrobot is in vivo working. A PVDF co-axial nanofiber based cantilever is designed to harvest the vibration power generated by ultrasonic wave transmitted in vitro. PVDF forms the shell of the nanofiber, whereas the core is conductive material, such as polyaniline, which simplifies greatly the fabrication of electrodes on single nanofiber. With specially designed cantilever, this device can resonate to desired frequency which leads the energy harvesting device to work under the optimal condition.
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