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Article
Detection of the Position, Direction and Speed of Sliding Contact with a Multi-Layer Compliant Tactile Sensor Fabricated Using Direct-Print Technology
Smart Materials and Structures
  • Morteza Vatani, University of Akron, Main Campus
  • Erik D. Engeberg, University of Akron Main Campus
  • Jae-Won Choi, University of Akron, main campus
Document Type
Article
Publication Date
9-1-2014
Abstract

A multi-layer resistance based compliant tactile sensor was fabricated using direct-print (DP) and soft molding processes. The sensor consists of two layers of embedded stretchable sensing elements sandwiched by three layers of a polyurethane rubber material. The sensing elements were created by the DP process using a photopolymer filled with multi-wall carbon nanotubes, which exhibit the property of piezoresistivity. The printed sensing elements were fully cured using ultraviolet light. The sensing elements within each layer of the sensor structure change in electrical resistance when external forces are applied. By processing the measured sensor signals, the fabricated sensor was able to detect the position of contact forces with a 3 mm spatial resolution, as well as their two-dimensional translation directions and speeds. Based on the results, it is concluded that the fabricated sensors are promising in robotic applications and the developed process and material can be a reliable and robust way to build highly stretchable tactile sensors.

Citation Information
Morteza Vatani, Erik D. Engeberg and Jae-Won Choi. "Detection of the Position, Direction and Speed of Sliding Contact with a Multi-Layer Compliant Tactile Sensor Fabricated Using Direct-Print Technology" Smart Materials and Structures Vol. 23 Iss. 9 (2014) p. 095008 - 095008
Available at: http://works.bepress.com/jae-won_choi/14/