By Topic

Flexible Tactile Sensor for Tissue Elasticity Measurements

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Peng Peng ; Dept. of Mech. Eng., Univ. of Minnesota, Minneapolis, MN, USA ; Rajesh Rajamani ; Arthur G. Erdman

This paper presents a novel tactile sensing technique for tissue elasticity measurements. A prototype flexible tactile sensor has been successfully fabricated using polydimethylsiloxane as the structural material. The proposed sensor comprises an array of capacitors with no active elements used. By varying the sizes of sensing membranes within the capacitors, different stiffnesses of sensing diaphragms can be achieved. The elasticity of the targeted object can be thereafter measured based on the relative deflections of the sensing diaphragms. The fabricated sensor has been calibrated by an off-the-shelf polymer durometer hardness selector pack. The results show a sensing resolution of 0.1 MPa for elasticity measurement and a force sensing resolution as small as 5 mN. This flexible tactile sensor can be embedded on the distal portions of various endoscopic instruments for in vivo tissue elasticity measurements.

Published in:

Journal of Microelectromechanical Systems  (Volume:18 ,  Issue: 6 )