Piezoresistive Polymer Diaphragm Sensor Array Using Conductive Elastomeric Nanocomposite Films for Skin-Mountable Keypad Applications

This paper reports on arrayed piezoresistive polymer diaphragm sensor made entirely of elastomer for skin-mountable keypad applications. Two-step transfer of conductive elastomeric nanocomposites (CENs) combined with soft lithographic techniques enables the achievement of elastic sensing layers with...

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Published in:Journal of microelectromechanical systems 2015-06, Vol.24 (3), p.626-633
Main Authors: Kong, Jeong-Ho, Jang, Nam-Su, Huh, Jin-Yeop, Kim, Soo-Hyung, Kim, Jong-Man
Format: Article
Language:English
Subjects:
Arrays
conductive elastomeric nanocomposites
Fabrication
Piezoresistance
Piezoresistive polymer diaphragm sensor
Polymers
Sensors
skin-mountable keypad
Strips
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cited_by cdi_FETCH-LOGICAL-c435t-dff7ea261e7002e5f17fc46f9f3717a7edba088b48b9d748d81688e5e2dad9ec3
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container_title Journal of microelectromechanical systems
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creator Kong, Jeong-Ho
Jang, Nam-Su
Huh, Jin-Yeop
Kim, Soo-Hyung
Kim, Jong-Man
description This paper reports on arrayed piezoresistive polymer diaphragm sensor made entirely of elastomer for skin-mountable keypad applications. Two-step transfer of conductive elastomeric nanocomposites (CENs) combined with soft lithographic techniques enables the achievement of elastic sensing layers with strip-patterned CENs embedded in polydimethylsiloxane (PDMS) channels. After assembling with an elastomeric bump layer, simple all-elastomer sensor architectures are successfully demonstrated. The activated buttons of the sensor can be easily and distinguishably identified by sensing the simultaneous changes in the electrical resistance of CEN strips with respect to the applied force. The straightforward sensing mechanism makes it possible to detect the exact locations of input with negligible crosstalk between adjacent sensing buttons to each other. The usability of the sensor platform as a skin-mountable keypad is also demonstrated by integrating on a wrist.
doi_str_mv 10.1109/JMEMS.2014.2338332
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source IEEE Electronic Library (IEL) Journals
subjects Arrays
conductive elastomeric nanocomposites
Fabrication
Piezoresistance
Piezoresistive polymer diaphragm sensor
Polymers
Sensors
skin-mountable keypad
Strips
title Piezoresistive Polymer Diaphragm Sensor Array Using Conductive Elastomeric Nanocomposite Films for Skin-Mountable Keypad Applications
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