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Vol. 34, No. 8(3), S&M3042

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Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
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Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
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Sensors and Materials, Volume 16, Number 1 (2004)
Copyright(C) MYU K.K.
pp. 25-41
S&M545 Research Paper in Biosensors and Related Areas
Published: 2004

Analysis of a Membrane-Type Polymeric-Based Tactile Sensor for Biomedical and Medical Robotic Applications [PDF]

Javad Dargahi and Siamak Najarian

(Received August 25, 2003; Accepted November 26, 2003)

Keywords: tactile sensor, FEM, medical robotics, PVDF

In this paper, we report on the design, fabrication, testing, and modeling of a novel membrane-type polyvinylidene fluoride (PVDF) tactile sensor. The designed assembly consists of a single film of PVDF sensor, which is held between two 12-mm-thick flat Plexiglas plates, each with a 90-mm-diameter center hole. Three rectangular-shaped aluminum electrodes, each 2 mm wide, formed a triangle in the central region of the PVDF film. Using a geometrical mapping process and by applying force at various points on the sensor surface, the loci of the isocharge contours for the three sensing elements are obtained. It is found that the variation in output charge is inversely proportional to the distance from the sensing element and that the exponent for this function is in the range of 0.58–1. Finite element modeling is used to obtain the stress generated in the membrane and to form a basis for the comparison between experimental results and the results of theoretical analysis. There is a good correlation between the theoretical predictions and the experimental data. The designed sensor can be potentially integrated with a medical probe in order to provide tactile mapping.

Corresponding author: Javad Dargahi, Siamak Najarian


Cite this article
Javad Dargahi and Siamak Najarian, Analysis of a Membrane-Type Polymeric-Based Tactile Sensor for Biomedical and Medical Robotic Applications, Sens. Mater., Vol. 16, No. 1, 2004, p. 25-41.



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