Browse/search for people

Publication - Dr Joanne Zhang

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

    Citation

    Sun, R, Zhang, X-C, Rossiter, J & Scarpa, F, 2016, ‘A highly sensitive pressure sensor using conductive composite elastomers with wavy structures’. in: Brian Cullum, Douglas Kiehl, Eric McLamore (eds) Proceedings of SPIE - The International Society for Optical Engineering. Society of Photo-Optical Instrumentation Engineers (SPIE)

    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.

    Full details in the University publications repository