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“This work is very interesting and significant in the sense that it provides a novel approach to converting mechanical energy through an electrochemical route, using a simple design and device structure,” says Wu Wenzhuo, an assistant professor of industrial engineering at Purdue University who was not involved in this work. “More significantly, the output current from the demonstrated device is very large, with a long pulse duration. This is very important for practical applications, since most other mechanical energy harvesting methods suffer from the issues of small current output with short pulse duration.”
Wenzhuo adds that “efficient harvesting of such mechanical energies will help to develop more capable and intelligent wearable devices and human-machine interfaces. … This work presents huge potential in many applications such as flexible electronics, self-powered sensors, wearable devices, human-machine interfaces, robotics, artificial skin, etc.”
The team also included postdoc Kejie Zhao (now assistant professor at Purdue University) and visiting graduate student Giorgia Gobbi , and Hui Yang and Sulin Zhang at Penn State. The work was supported by the National Science Foundation, the MIT MADMEC Contest, the Samsung Scholarship Foundation, and the Kwanjeong Educational Foundation.
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