Transcutaneous ultrasound energy harvesting using capacitive triboelectric technology

Science
Ronan HinchetSang-Woo Kim

Abstract

A major challenge for implantable medical systems is the inclusion or reliable delivery of electrical power. We use ultrasound to deliver mechanical energy through skin and liquids and demonstrate a thin implantable vibrating triboelectric generator able to effectively harvest it. The ultrasound can induce micrometer-scale displacement of a polymer thin membrane to generate electrical energy through contact electrification. We recharge a lithium-ion battery at a rate of 166 microcoulombs per second in water. The voltage and current generated ex vivo by ultrasound energy transfer reached 2.4 volts and 156 microamps under porcine tissue. These findings show that a capacitive triboelectric electret is the first technology able to compete with piezoelectricity to harvest ultrasound in vivo and to power medical implants.

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Citations

Apr 10, 2020·Advanced Materials·Mingli ZhengZhong Lin Wang
Sep 17, 2020·Chemical Society Reviews·Yi-Zhou ZhangHusam N Alshareef
Jun 28, 2020·Nature Communications·Hemin ZhangPhilippe Basset
Jul 31, 2020·Nature Reviews. Materials·Geon-Hui LeeSei Kwang Hahn
Jul 28, 2020·Advanced Science·Aihua ChenZhong Lin Wang
Mar 20, 2020·Proceedings of the National Academy of Sciences of the United States of America·Md Osman Goni NayeemTakao Someya
Oct 8, 2020·Advanced Materials·Jiaqing XiongPooi See Lee
Oct 17, 2020·Science and Technology of Advanced Materials·Hong-Joon YoonSang-Woo Kim
Feb 9, 2021·Biosensors & Bioelectronics·Tucker StuartPhilipp Gutruf
Dec 10, 2020·Bioelectronic Medicine·Youngjun ChoSanghoon Lee
Feb 10, 2021·Current Problems in Cardiology·Michael Lawren CoIndranill Basu-Ray
Feb 5, 2021·Science Advances·Yuxiang ShiZhong Lin Wang
Sep 17, 2020·Science Advances·Yang WangZhong Lin Wang
Jun 2, 2020·Biosensors & Bioelectronics·Hyunsoo KimSeon Jeong Kim
Feb 20, 2021·Journal of Neural Engineering·Le Cai, Philipp Gutruf
Mar 25, 2021·Advanced Materials·Jianjun LuoZhong Lin Wang
Mar 23, 2021·Research : a Science Partner Journal·Jingwen TianXiangyu Chen
Apr 2, 2021·ACS Applied Materials & Interfaces·Ju Hwan LeeTae June Kang
May 1, 2021·Advanced Healthcare Materials·Kyun Kyu KimSeung Hwan Ko
May 1, 2021·Advanced Healthcare Materials·Hongwei ShengWei Lan
May 25, 2021·Advanced Science·Eve McGlynnHadi Heidari

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