Ultrasound-Driven Two-Dimensional Ti3C2Tx MXene Hydrogel Generator

Kanghyuck Lee, Yi-Zhou Zhang, Qiu Jiang, Hyunho Kim, Abdulkader A. Alkenawi, Husam N. Alshareef

Research output: Contribution to journalArticlepeer-review

94 Scopus citations


Ultrasound 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.
Original languageEnglish (US)
Pages (from-to)3199-3207
Number of pages9
JournalACS Nano
Issue number3
StatePublished - Feb 20 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Research reported in this publication is supported by King Abdullah University of Science and Technology (KAUST). The authors thank Professor Khaled Salama and Professor Zhong Lin Wang for several useful comments.


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