to achieve effective biopotential monitoring (e.g., electrocardiograph (ECG), electromyogram (EMG), etc.) and are widely applied in life science fields such as clinical therapy, health monitoring, and behavioral analysis. [1][2][3][4][5][6] Wet electrodes, represented by Ag/AgCl electrodes, dominate practical clinical applications by virtues of noninvasiveness, ease of use, and low cost. [7]

Wearable bioelectrical monitoring devices can provide long-term human health information such as electrocardiogram and other physiological signals. It is a crucial part of the remote medical system. These can provide prediction for the diagnosis and treatment of cardiovascular disease and access to timely treatment. However, the patch comfort of the wearable monitoring devices in long-term contact with the skin have been a technical bottleneck of the hardware. In this study, the biomimetic patch with wicking-breathable and multi-mechanism adhesion performance to achieve adaptability and comfortability to human skin has been reported. The patch was designed based on a conical through-hole and hexagonal microgroove to directionally transport sweat from skin to air which gives the patch the breathable performance. The breathable and drainage capability of the biomimetic patch was experimentally verified by analyzing the conical through-hole and hexagonal microgroove with the structural mechanism of wicking. Multi-mechanism adhesion of the Ag/Ni microneedle array and PDMS-t adhesion material ensures the stability of patch signal acquisition. This study provides a new way for enhancing the breathability and adaptability of the patch to realize accurate bioelectrical signal monitoring under sweat conditions on human skin.

Biomimetic Microneedles‐Based Adhesive Electrode In article number 2200532, Cong Yuan, Keju Ji, Zhendong Dai, and co‐workers develop a bionic electrode for bioelectrical signal monitoring, which utilizes the mechanical locking of the microneedle array and the adhesion to synergistically enhance the stable adhesion on the skin surface, and realizes continuous and robust bioelectric monitoring.

No abstract

No abstract