Affiliation:
1. Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu Campus, Kitakyushu 808-0196, Japan
Abstract
This paper aims to enhance the capacitance of electroactive polymer (EAP)-based strain sensors. The enhancement in capacitance was achieved by using a free-standing stretchable polymer film while introducing conducting polymer to fabricate a hybrid dielectric film with controlled conductivity. In this work, styrene-ethylene-butylene-styrene (SEBS) rubber was used as the base material, and dodecyl benzene sulfonate anion (DBSA)-doped polyaniline (PANI) was used as filler to fabricate a hybrid composite conducting film. The maleic anhydride group of the SEBS Rubber and DBSA, the anion of the polyaniline dopant, make a very stable dispersion in Toluene and form a free-standing stretchable film by solution casting. DBSA-doped polyaniline increased the conductivity and dielectric constant of the dielectric film, resulting in a significant enhancement in the capacitance of the EAP-based strain sensor. The sensor presented in this article exhibits capacitance values ranging from 24.7 to 100 µF for strain levels ranging from 0 to 100%, and sensitivity was measured 3 at 100% strain level.
Subject
Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry
Reference91 articles.
1. Deformation capture via soft and stretchable sensor arrays;Glauser;ACM Trans. Graph.,2019
2. Zhu, Y., Giffney, T., and Aw, K. (2022). A Dielectric Elastomer-Based Multimodal Capacitive Sensor. Sensors, 22.
3. Bar-Cohen, Y., Anderson, I.A., and Shea, H.R. (2020, January 23). Dielectric elastomer based stretchable textile sensor for capturing motion. Proceedings of the Electroactive Polymer Actuators and Devices (EAPAD) XXII, Online.
4. Increasing the performance of dielectric elastomer actuators: A review from the materials perspective;Romasanta;Prog. Polym. Sci.,2015
5. Vibrations and waves in soft dielectric elastomer structures;Zhao;Int. J. Mech. Sci.,2023