A Novel Capacitive Energy Harvesting Concept (Energy Harvesting and Storage Europe 2015)

Dr Robert Hahn, Head of Micro Energy Systems Group
Fraunhofer IZM
Apr 29, 2015.


Europe 2015 Presentation - Fraunhofer IZM*
Europe 2015 Audio Presentation - Fraunhofer IZM*

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Presentation Summary

First results of the FP7 project MATFLEXEND will be presented. In contrast to electrostatic MEMS based parallel plate transducers or dielectric elastomer systems here, the capacitance is varied as function of the mechanical load with help of liquid metal or electrically conducting elastomers. These flexible energy harvesters are especially intended for wearables including smart textiles, shoes and other applications where mechanical compliance is needed.
Numerical simulation was used to identify the influence of material parameters and parasitic circuit elements on the harvester performance as function of actuation frequency. First experimental results are shown and the behaviour of liquid metal and elastomer electrodes in combination with several high-k dielectrics is discussed.

Speaker Biography (Robert Hahn)

Robert Hahn received the Ph.D degree in electrical engineering in 1990.
Since 1995 he is with the Fraunhofer-Institute for Reliability and Microintegration (Fraunhofer-IZM) were he is head of the portable power supply group. He has taken over the coordination of several national and European research projects for the development of new micro-batteries, micro-fuel cells and integrated power supplies for micro systems and portable electronics. Dr. Hahn has authored and co-authored numerous papers in the fields of microelectronics packaging and micro energy systems as well as 18 patents in the area of micro energy systems. He received the f-cell award for the Fraunhofer micro fuel cell development in 2005.

Company Profile (Fraunhofer IZM)

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Fraunhofer IZM specializes in industry-oriented applied research. With four technology clusters, Fraunhofer IZM covers the entire spectrum of technologies and services necessary for developing reliable electronics and integrating new technology into applications. Our customers are as varied as the applications for electronics. We take on development projects for the automotive industry, healthcare and industrial electronics and even textile companies. The Micro Energy Storage & Smart Power group works in the field of integrated rechargeable micro batteries, micro fuel cells and energy harvesting http://www.smart-power.de.
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