POSFET devices based tactile sensing arrays

Dahiya, R. S. , Lorenzelli, L., Metta, G. and Valle, M. (2010) POSFET devices based tactile sensing arrays. In: 2010 IEEE International Symposium on Circuits and Systems (ISCAS), Paris, France, 30 May-02 Jun 2010, pp. 893-896. (doi:10.1109/ISCAS.2010.5537414)

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Publisher's URL: http://dx.doi.org/10.1109/ISCAS.2010.5537414


This work presents and experimentally evaluates novel POSFET (Piezoelectric Oxide Semiconductor Field Effect Transistor) devices based tactile sensing arrays. The arrays, primarily developed for the robotic applications, consist of 5 × 5 POSFET touch sensing devices or taxels. The POSFET touch sensing devices are developed by spin coating piezoelectric polymer P(VDF-TrFE) film on the gate area of MOS devices and polarizing the film in situ. To detect contact events, the taxels utilize the contact forces induced change in the polarization level (and hence change in the induced channel current) of piezoelectric polymer. Both, individual taxels and the array are designed to match spatio-temporal performance of the human fingertips. Experimental results demonstrate that the POSFET tactile sensing arrays presented here are able to detect complex dynamic contact events such as rolling of an object.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Dahiya, Professor Ravinder
Authors: Dahiya, R. S., Lorenzelli, L., Metta, G., and Valle, M.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering

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