Electrospinning Machine | Permeable, Wet-Adhesive, and EMI-Resistant Liquid Metal Electronic Skin for High-Fidelity Electrophysiological Monitoring in Sweaty and Electromagnetic Environments

Challenge: Textile-based electronic skins possess excellent permeability, flexibility, and biocompatibility, making them ideal for wearable health monitoring and human-machine interfaces. However, the inherent trade-off between breathability and adhesion poses a significant challenge for maintaining a stable and comfortable skin-electrode interface. Under extreme conditions, this often leads to increased interfacial impedance, signal artifacts, and reduced signal fidelity. 

Method: Professor Huang Yunpeng's team from Jiangnan University proposed a breathable, wet-adhesive, anti-electromagnetic interference (EMI) textile-based electronic skin, designed for stable and high-fidelity electrophysiological monitoring, especially in sweaty and strong electromagnetic environments. 

Innovation 1: Liquid metal particles (LMP) are encapsulated in polysaccharide molecules to prevent surface oxidation and enhance printability. The conductive ink is directly patterned onto a sandwich-structured textile substrate, which integrates a wet-adhesive yet permeable fiber layer and an EMI shielding interlayer coated with silver nanoparticles. 

Innovation 2: The resulting electronic skin exhibits excellent permeability (1439.1±13.3 g m−2 day−1), strong wet adhesion (2.1 J cm−2), and a powerful EMI shielding effect (>50 dB in the X-band). These advantages collectively enable comfortable, stable, and high-fidelity acquisition of various electrophysiological signals (including electrocardiogram (ECG), electroencephalogram (EEG), and electrooculogram (EOG)). 

https://doi.org/10.1002/adma.202508041