On-skin dry electronics are critical for stably transmitting vital and various electrophysiological signals for diagnostics and the human/machine interface, but they are limited by intrinsically poor compliance. High signal-to-noise ratio (SNR) and long-term monitoring fidelity require dry electrode to be highly adhesive in compensation to maintain the conformable contact. However, enlarged adhesive force between electrode and skin will lead to irritant contact with elevated risk of signal distortion and contamination caused delamination. Herein, we develop a delamination-resistant imperceptible bioelectrode (DrIE) on the merits of relieving deformation-induced stress during body movements and allowing gas permeation for long-term wearing. Furthermore, benefiting from the augmented mechanical compliance and ultralow thickness, the SNR of our electrode in recording electromyogram (EMG) signals retains 35.23 dB and even the adhesive force is down to 0.013 N/cm, considerably improving the fidelity, recyclability, and wearing comfortability. Our strategy of utilizing dynamic polymer chain rearrangements promoted stress relaxation for compliant DrIE proposes a universal route to the robust biointerface for next-generation clinical applications.

中文翻译：

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用于稳健电生理信号监测的抗分层不易察觉的生物电极

皮肤干燥电子设备对于稳定传输用于诊断和人机界面的重要和各种电生理信号至关重要，但它们受到固有的依从性差的限制。高信噪比 (SNR) 和长期监测保真度要求干电极具有高粘性以补偿以保持贴合接触。然而，电极和皮肤之间增大的粘附力会导致刺激性接触，从而增加信号失真和污染导致分层的风险。在此，我们开发了一种抗分层不易察觉的生物电极（DrIE），其优点是缓解身体运动过程中的变形引起的应力，并允许长期佩戴气体渗透。此外，得益于增强的机械顺应性和超薄厚度，我们的电极在记录肌电 (EMG) 信号时的 SNR 保持 35.23 dB，甚至粘附力降至 0.013 N/cm，显着提高了保真度、可回收性和佩戴舒适性。我们利用动态聚合物链重排的策略促进了符合 DrIE 的应力松弛，为下一代临床应用提供了通向稳健生物界面的通用途径。