A wood-templated unidirectional piezoceramic composite for transmuscular ultrasonic wireless power transfer
A wood-templated unidirectional piezoceramic composite for transmuscular ultrasonic wireless power transfer
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DOI：
10.1039/d1ee02353e
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发表时间：
2021-11-04
影响因子：
32.5
通讯作者：
Yang, Zhengbao
中科院分区：
文献类型：
--
作者：
Hong, Ying;Jin, Lihan;Yang, Zhengbao
植入人体的生物电子设备越来越多地用于诊断和治疗目的，通过无线能量传输技术可以显着提高其功能和寿命。然而，受电磁辐射、低功率输出、高刚度、短传输距离和组织衰减的限制，大多数无线能量传输系统无法满足植入式医疗设备（IMD）的要求。在这里，受天然木材结构的启发，我们提出了一种跨肌超声无线功率传输系统，该系统基于单向 3D 互连陶瓷聚合物拓扑中的柔性木质模板压电超声能量采集器 (W-PUEH)。所开发的柔性W-PUEH器件的输出电压为21 V，输出电流为2 mA，平均输出功率密度为304 mu W cm(-2)，比现有技术高一个数量级。进一步的离体和体内实验证明了 W-PUEH 的足够供电能力及其在植入式设备中的潜在应用，以改善接受者的生活质量和福祉。
Bioelectronic devices implanted within the human body are increasingly used for diagnostic and therapeutic purposes, in which their functions and lifespan could be significantly improved with wireless energy transfer technology. However, limited by electromagnetic radiation, low power output, high stiffness, short transfer distance and tissue attenuation, most wireless energy transfer systems cannot meet the requirements of implantable medical devices (IMDs). Here, inspired by natural wood structures, we present a transmuscular ultrasonic wireless power transfer system based on a flexible wood-templated piezoelectric ultrasonic energy harvester (W-PUEH) in a unidirectional 3D interconnected ceramic-polymer topology. The developed flexible W-PUEH device demonstrates an output voltage of 21 V, an output current of 2 mA, and an average output power density of 304 mu W cm(-2), one order of magnitude higher than the state of the art. Further ex vivo and in vivo experiments demonstrate the sufficient power supply capacity of W-PUEH and its potential applications in implantable devices for the improvement of life quality and well-being of the recipients.