nn9b08462_si_005.avi (14.75 MB)
Ultrasound-Driven Two-Dimensional Ti3C2Tx MXene Hydrogel Generator
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posted on 2020-02-24, 23:44 authored by Kang Hyuck Lee, Yi-Zhou Zhang, Qiu Jiang, Hyunho Kim, Abdulkader A. Alkenawi, Husam N. AlshareefUltrasound
is a source of ambient energy that is rarely exploited.
In this work, a tissue-mimicking MXene-hydrogel (M-gel) implantable
generator has been designed to convert ultrasound power into electric
energy. Unlike the present harvesting methods for implantable ultrasound
energy harvesters, our M-gel generator is based on an electroacoustic
phenomenon known as the streaming vibration potential. Moreover, the
output power of the M-gel generator can be improved by coupling with
triboelectrification. We demonstrate the potential of this generator
for powering implantable devices through quick charging of electric
gadgets, buried beneath a centimeter thick piece of beef. The performance
is attractive, especially given the extremely simple structure of
the generator, consisting of nothing more than encapsulated M-gel.
The generator can harvest energy from various ultrasound sources,
from ultrasound tips in the lab to the probes used in hospitals and
households for imaging and physiotherapy.