@inproceedings{793099e2bbd445d4be1a3dcade06fdcb,
title = "Electret properties of PVDF film material: Flexible and lightweight energy harvesting device",
abstract = "An electrostatic energy harvesting device is presented that is built up like a film capacitor consisting of PVDF films as electret material. By using separated Aluminum foils as electrodes, the distance between PVDF film and Aluminum foil can be changed by compressive forces if the device is just loosely wound. The change of the distance in addition to the polarized PVDF film acts like an electrostatic generator. One challenge in the design of the device is to ensure a controllable change of distance between PVDF film and Aluminum foil if the device is stressed mechanically. One possibility is the change of parameters of the winding process to generate certain pretensions of the films. Main disadvantage of this method is the difficulty to produce devices with constant properties. A potential solution for this problem is to fold the device in a special way. The advantage of the fold is that the distance of the electrodes changes in a more controlled and uniform way, if it is pushed and pulled. The device was modeled analytically to find the optimum configurations for different constrains. The results found in the simulation have been evaluated experimentally, too.",
keywords = "Electret, Electrostatic energy harvester, Film capacitor, PVDF",
author = "Enrico Bischur and Norbert Schwesinger",
year = "2014",
doi = "10.1117/12.2045089",
language = "English",
isbn = "9780819499837",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
booktitle = "Active and Passive Smart Structures and Integrated Systems 2014",
note = "Active and Passive Smart Structures and Integrated Systems 2014 ; Conference date: 10-03-2014 Through 13-03-2014",
}