Soft Artificial Skin with Multi-Modal Sensing Capability Using Embedded Liquid Conductors

Yong-Lae Park, Bor-rong Chen, and Robert J. Wood
Proceedings of the IEEE Sensors 2011 Conference, October, 2011, pp. 81-84.


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Abstract
We describe the design, fabrication and calibration of a highly compliant mechanism to be used as an artificial skin sensor. The artificial skin sensor consists of multilayered mircochannels filled with a conductive liquid capable of detecting multi-axis strains and contact pressure. A novel manufacturing method composed of layered molding and casting processes was proposed to fabricate a multilayered soft sensor circuit. Silicone rubber layers with channel patterns, cast with 3D printed molds, were bonded to create embedded microchannels, and a conductive liquid was injected into the microchannels. The channel dimensions are 200um × 200um for strain sensing and 500um (width) × 200um (height) for pressure sensing. The size of the sensor is 25mm × 25mm, and the thickness is approximately 3.5mm. The prototype was tested with a materials tester and showed linearity in strain sensing and nonlinearity in pressure sensing. The sensor signal was repeatable in both cases.

Notes
Number of pages: 4

Text Reference
Yong-Lae Park, Bor-rong Chen, and Robert J. Wood, "Soft Artificial Skin with Multi-Modal Sensing Capability Using Embedded Liquid Conductors," Proceedings of the IEEE Sensors 2011 Conference, October, 2011, pp. 81-84.

BibTeX Reference
@inproceedings{Park_2011_7487,
   author = "Yong-Lae Park and Bor-rong Chen and Robert J. Wood",
   title = "Soft Artificial Skin with Multi-Modal Sensing Capability Using Embedded Liquid Conductors",
   booktitle = "Proceedings of the IEEE Sensors 2011 Conference",
   pages = "81-84",
   month = "October",
   year = "2011",
}