Response of P(VDF-TrFE) sensor to force and temperature

Hannah, Stuart and Uttamchandani, Deepak and Gleskova, Helena and Khan, Saleem and Dahiya, Ravinder; (2015) Response of P(VDF-TrFE) sensor to force and temperature. In: 2015 11th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME). IEEE, GBR. ISBN 9781479982295 (https://doi.org/10.1109/PRIME.2015.7251412)

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Abstract

Responses of a tactile sensor to force (0 to 9 N) and temperature (15 to 47°C) are investigated. The sensor is based on ferroelectric polyvinylidene fluoride – trifluoroethylene (P(VDF-TrFE)) copolymer. The 2.5-µm-thick copolymer layer was sandwiched between aluminum and gold electrodes and the active sensing area was 25 mm2. The response of the sensor was measured in a form of capacitance recorded at 2 kHz. The capacitance was measured in a steady-state condition, i.e. after the force and temperature have stabilized. We have found that the sensor’s sensitivity to temperature is comparable to that of force, and even greatly exceeds the force sensitivity when dealing with forces larger than 3 N. This is because the response of the sensor to temperature is approximately linear, while the response to the applied force is logarithmic. Consequently, at the lower end of applied forces (< 0.5 N), the sensitivity is 7.5 pF/N while the temperature sensitivity is about 7 pF/°C within the whole temperature range.

  • Item type:Book Section
    ID code:53865
    Dates:
    Date
    Event
    10 September 2015
    Published
    29 June 2015
    Published Online
    1 May 2015
    Accepted
    Notes:(c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:24 Jul 2015 13:25
    Last modified:15 Apr 2024 00:05
    URI:https://strathprints.strath.ac.uk/id/eprint/53865
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