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research article

Soft metal constructs for large strain sensor membrane

Michaud, Hadrien O
•
Teixidor, Joan
•
Lacour, Stéphanie P
2015
Smart Materials and Structures

Thin gold films on silicone display large reversible change in electrical resistance upon stretching. Eutectic liquid metal conductors maintain bulk metal conductivity, even upon extensive elongation. When integrated together, the soft metals enable multidirectional, large strain sensor skin. Their fabrication process combines thermal evaporation of thin gold film patterns through stencil mask with microplotting of eutectic gallium indium microwires, and packaging in silicone rubber. Using three-element rectangular rosettes, we demonstrate a sensor skin that can reliably and locally quantify the plane strain vector in surfaces subject to stretch (up to 50% strain) and indentation. This hybrid technology will find applications in soft robotics, prosthetics and wearable health monitoring systems.

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Type
research article
DOI
10.1088/0964-1726/24/3/035020
Web of Science ID

WOS:000349958800024

Author(s)
Michaud, Hadrien O
Teixidor, Joan
Lacour, Stéphanie P
Date Issued

2015

Publisher

Iop Publishing Ltd

Published in
Smart Materials and Structures
Volume

24

Issue

3

Article Number

035020

Subjects

soft conductors

•

additive manufacturing

•

large strain sensing

•

miniaturized strain rosette

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LSBI  
Available on Infoscience
March 14, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/112479
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