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Feasibility on a piezoresistive tactile normal force sensor array

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Abstract

The paper presents a piezoresistive sensor array designed for use in touch panel applications. The sensor array is able to detect both amplitude and position of an applied force. A numerical method was used in designing both the normal force sensor and the sensor array. The normal force sensor has been designed, fabricated and tested with sensitivity of 0.5 mV/mN V. The sensor array has been modeled as feasible through the implementation of normal force sensor, and shows the sensitivity of 0.42 mV/mN V. The numerical results of the sensor array demonstrate linearity, which can be used for characterization of touch position and force amplitude. The intrinsic force-angle-related property of the normal force sensor can affect the characterization of the sensor array, and produce redundancy information for more precise data analysis.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Alberta Edmonton, Edmonton, AB, T6G 2G8, Canada

    Shichao Yue & Walied A. Moussa

  2. NEMSOR Technologies, Edmonton, AB, T5J 4P6, Canada

    L. Richard Williston

Authors
  1. Shichao Yue
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  2. Walied A. Moussa
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  3. L. Richard Williston
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Correspondence to Walied A. Moussa.

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Yue, S., Moussa, W.A. & Williston, L.R. Feasibility on a piezoresistive tactile normal force sensor array. Appl. Phys. A 116, 409–414 (2014). https://doi.org/10.1007/s00339-014-8491-3

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  • DOI: https://doi.org/10.1007/s00339-014-8491-3

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