期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 111, 期 5, 页码 1927-1932出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1317233111
关键词
biomedical implants; flexible electronics; transfer printing; wearable electronics; heterogeneous integration
资金
- US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering through the Frederick Seitz Materials Research Laboratory at the University of Illinois at Urbana-Champaign [DE-FG02-07ER46471]
- National Institute of Biomedical Imaging and Bioengineering [U01EB012487]
Here, we report advanced materials and devices that enable high-efficiency mechanical-to-electrical energy conversion from the natural contractile and relaxation motions of the heart, lung, and diaphragm, demonstrated in several different animal models, each of which has organs with sizes that approach human scales. A cointegrated collection of such energy-harvesting elements with rectifiers and microbatteries provides an entire flexible system, capable of viable integration with the beating heart via medical sutures and operation with efficiencies of similar to 2%. Additional experiments, computational models, and results in multilayer configurations capture the key behaviors, illuminate essential design aspects, and offer sufficient power outputs for operation of pacemakers, with or without battery assist.
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