A study on time-dependent electromechanical response of electroconductive textile

Abstract

This study aimed to enhance the instantaneous electromechanical response of a carbon nanotube (CNT)-based electroconductive textile by postulating that the time-dependent electrical components, such as capacitors and inductors formed within the microstructure of such materials, are the primary contributors to their time-dependent resistances observed during mechanical straining. To investigate this, the characteristics and the configurations of these components in a circuit were estimated by employing curve fitting method on the basis of impedance and phase angle data across various frequencies and strain levels. Utilizing the predicted circuit model, the response of the measured resistance under different strain conditions was simulated using finite element method (FEM) under both alternating current (AC) and direct current (DC) supply. The findings indicated that the time-dependent electrical components did not exclusively account for the time-dependent response of the resistance measured during straining of the electroconductive textile. The high-frequency AC power supply also enhanced the instantaneous electromechanical response of the electroconductive textile.