{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,4]],"date-time":"2026-04-04T17:47:52Z","timestamp":1775324872450,"version":"3.50.1"},"reference-count":34,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2020,1,14]],"date-time":"2020-01-14T00:00:00Z","timestamp":1578960000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51775447, 51705429"],"award-info":[{"award-number":["51775447, 51705429"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this paper, a flexible and stretchable energy harvester based on liquid-metal and fluorinated ethylene propylene (FEP) electret films is proposed and implemented for the application of wearable devices. A gallium liquid-metal alloy with a melting point of 25.0 \u00b0C is used to form the stretchable electrode; therefore, the inducted energy harvester will have excellent flexibility and stretchability. The solid-state electrode is wrapped in a dragon-skin silicone rubber shell and then bonded with FEP electret film and conductive film to form a flexible and stretchable energy harvester. Then, the open-circuit voltage of the designed energy harvester is tested and analyzed. Finally, the fabricated energy harvester is mounted on the elbow of a human body to harvest the energy produced by the bending of the elbow. The experimental results show that the flexible and stretchable energy harvester can adapt well to elbow bending and convert elbow motion into electric energy to light the LED in a wearable watch.<\/jats:p>","DOI":"10.3390\/s20020458","type":"journal-article","created":{"date-parts":[[2020,1,15]],"date-time":"2020-01-15T03:20:22Z","timestamp":1579058422000},"page":"458","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Wearable Device Oriented Flexible and Stretchable Energy Harvester Based on Embedded Liquid-Metal Electrodes and FEP Electret Film"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2289-2076","authenticated-orcid":false,"given":"Jianbing","family":"Xie","sequence":"first","affiliation":[{"name":"Key Laboratory of Micro\/Nano Systems for Aerospace, Ministry of Education, Northwestern Polytechnical University, Xi\u2019an 710072, China"}]},{"given":"Yiwei","family":"Wang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Micro\/Nano Systems for Aerospace, Ministry of Education, Northwestern Polytechnical University, Xi\u2019an 710072, China"}]},{"given":"Rong","family":"Dong","sequence":"additional","affiliation":[{"name":"School of Mechatronic Engineering, Xi\u2019an Technological University, Xi\u2019an 710021, China"}]},{"given":"Kai","family":"Tao","sequence":"additional","affiliation":[{"name":"Key Laboratory of Micro\/Nano Systems for Aerospace, Ministry of Education, Northwestern Polytechnical University, Xi\u2019an 710072, China"}]}],"member":"1968","published-online":{"date-parts":[[2020,1,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"e1602051","DOI":"10.1126\/sciadv.1602051","article-title":"Flexible and stretchable power sources for wearable electronics","volume":"3","author":"Zamarayeva","year":"2017","journal-title":"Sci. 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