Flexible Sensor Array Using Composite Polymer as Artificial Skin
Date Issued
2007
Date
2007
Author(s)
Tsao, Li-Chi
DOI
en-US
Abstract
This work presents a novel method to fabricate temperature sensor arrays by dispensing electro-resistive polymer on flexible polyimide films. The fabricated temperature sensor array has 64 sensing cells in a 4×4 cm2 area. The sensor array can be used as humanoid artificial skin for sensation system of robots. The flexible polyimide substrate was patterned by interdigitated copper electrodes for determining the resistivity change of the electro-resistive polymer, which increases with ambient temperature. Polydimethlysiloxane(PDMS) was used as the matrix of the electro-resistive composites and different conductive fillers such as carbon black, graphite powder, carbon nano-fibrils have been investigated. It was found that graphite powder serves as the best conductive filler for highest temperature sensitivity and better stability. The volume fraction of the graphite powder for large dynamic range from 20oC to 110oC has been investigated and was found to be 20%. The fabricated temperature sensor array has been tested. The detected temperature contours are in well agreement with the shapes and magnitudes of different heat sources.
Subjects
電析出現象
溫度感測陣列
可撓性基板
人工皮膚
composite polymer
percolation
temperature sensor array
flexible substrate
artificial skin
Type
thesis
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