Heteropolar ferroelectrets for ultrathin flexible keyboards and tactile sensors

Ferroelectrets are flexible and conformable polymer transducer materials with a dominant longitudinal piezoelectric effect. They can be used in a wide range of transient pressure sensing applications. We present concepts for thin, flexible ferroelectret-keyboards (and advanced pressure sensors) base...

Full description

Saved in:
Bibliographic Details
Main Authors: Kogler, A., Buchberger, G., Bauer, S., Schwödiauer, R.
Format: Conference Proceeding
Language:English
Subjects:
Contact charging
Corona charging
Ferroelectrets
Flexible electronics
Large scale
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Ferroelectrets are flexible and conformable polymer transducer materials with a dominant longitudinal piezoelectric effect. They can be used in a wide range of transient pressure sensing applications. We present concepts for thin, flexible ferroelectret-keyboards (and advanced pressure sensors) based on ternary coded polarization patterns in a multilayer configuration. The decoration of a cellular polypropylene ferroelectret with a heteropolar polarization pattern of high resolution is a technical challenge. We discuss several concepts for achieving such polarization patterns and demonstrate a flexible 300 μm thin 3-layer keyboard where the combined signals of every single layer allow to encode and detect a total number of 26 keys.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2010.09.209