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Polymer energy harvester for powering wireless communication systems

 
: Costache, Florenta; Schirrmann, Christian; Seifert, Ruben; Bornhorst, Kirstin; Pawlik, Boscij; Despang, Hans-Günter; Heinig, Andreas

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Postprint (PDF; )

Procedia Engineering 120 (2015), pp.333–336
ISSN: 1877-7058
European Conference on Solid-State Transducers (Eurosensors) <29, 2015, Freiburg>
English
Journal Article, Conference Paper, Electronic Publication
Fraunhofer IPMS ()

Abstract
Energy was generated from harvester structures based on various electroactive polymer thin films of different electro-mechanical properties under applied pressure and frequency characteristics specific to human motion. A self-priming energy harvesting circuit was designed and optimized to collect and store this energy. The circuit enables a gradual increase in voltage each time pressure is applied on the harvester and more energy to be stored with each generation cycle. Thus stored energy of up to 10 μW/cm2 at 10 Hz was successfully used to power a wireless transmitter. The results revealed that, with increasing number of layers in a fluoropolymer harvester system, the time between signal transmissions could be shortened more and more.

: http://publica.fraunhofer.de/documents/N-367198.html