A highly sensitive pressure sensor using conductive composite elastomers with wavy structures

Rujie Sun; Xiao-Chong Zhang; Jonathan Rossiter; Fabrizio Scarpa

doi:10.1117/12.2229775

13 May 2016 A highly sensitive pressure sensor using conductive composite elastomers with wavy structures

Rujie Sun, Xiao-Chong Zhang, Jonathan Rossiter, Fabrizio Scarpa

Proceedings Volume 9863, Smart Biomedical and Physiological Sensor Technology XIII; 98630Z (2016) https://doi.org/10.1117/12.2229775
Event: SPIE Commercial + Scientific Sensing and Imaging, 2016, Baltimore, MD, United States

Abstract

Flexible pressure sensors are crucial components for the next generation wearable devices to monitor human physiological conditions. In this paper, we present a novel resistive pressure sensor based on hybrid composites made from carbon nanotube (CNT) for the conductive coating layer and polydimethylsiloxane (PDMS) elastomers as the substrate. The high sensitivity of these sensors is attributed to the change of contact resistance caused by the variation of the contact areas between the wavy film and the electrodes. Porous electrodes were designed to increase the roughness of the interfaces, thus further enhancing the pressure sensitivity. The developed device was verified through a series of tests, and the sensor exhibited a high sensitivity of 2.05 kPa^-1 under a low pressure of 35.6 Pa.

Citation Download Citation

Rujie Sun, Xiao-Chong Zhang, Jonathan Rossiter, and Fabrizio Scarpa "A highly sensitive pressure sensor using conductive composite elastomers with wavy structures", Proc. SPIE 9863, Smart Biomedical and Physiological Sensor Technology XIII, 98630Z (13 May 2016); https://doi.org/10.1117/12.2229775

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available