(Invited) Air-Permeable MXene Electrode with Miura-ori Structure for Biosensing

Abstract

In this work, we present an air-permeable MXene electrode capable of recording surface electromyographic (sEMG) signals on the skin surface based on the Miura-ori structure. MXene is a two-dimensional (2D) nanomaterial composed of transition metal carbides, nitrides, and carbonitrides developed in recent years. Taking advantage of the Miura-ori structure, MXene-based electrodes have high breathability as well as low and stable electrode-skin interfacial impedances, facilitating long-term reliable electrophysiological monitoring. The electrolytic gel on conventional wet Ag/AgCl gel electrodes increases the impedance between the electrode and the skin as it gradually dries, inhibits sweat evaporation and affects signal acquisition. Therefore, we provide a fascinating electrode design that can be used to obtain high-quality sEMG signals for assessing body movements such as swallowing.