A Breathable and Flexible Electronic Skin for Long-Term Electroencephalogram Monitoring

Abstract

Daily long-term, real-time monitoring of electroencephalogram (EEG) signals is essential for disease diagnosis, health monitoring, and brain-computer interaction. This work presents a breathable and flexible graphene-polyurethane (PU) mesh electronic skin (GPMES). With excellent breathability (1.904 $\text{kg}\cdot \mathrm{m}^{-2}\cdot \text{day}^{-1}$ at body temperature) comparable to naked skin, good flexibility, lightweight (1.5 mg), and low electrode-skin impedance (4.683 $\mathrm{k}\Omega$ at 1 kHz), the GPMES can be a promising candidate interface for long-term (> 10 h) and reliable daily EEG monitoring.