Опубликована: Апрель 15, 2025

Electronic skin (E-skin), a conformal human-machine interface, holds promise for healthcare monitoring and personal electronics. However, traditional fabrication methods face challenges of reliance on non-sustainable materials, intricate time-consuming processes, material softness-induced fragile transfer to target substrates. Inspired by "milk skin" phenomenon, we developed rapid "dipping-dipping" molecular assembly method in-situ fabricate cellulose-based bio-skin within seconds, exhibiting ultra-thin, high conformal, shape-customizable, degradable, low impedance performances. This technique immerses substrates sequentially into carboxymethyl cellulose (CMC) Cu(II) solutions, leveraging strong metal-coordination interactions. Membrane formation efficiency, influenced the oxidation metal ions, follows order: > Fe(II) Ca(II). CMC-Ag(I)/CMC-Cu(II) form stable membranes, whereas CMC-Fe(II) is fragmented structures, CMC-Mg(II)/CMC-Ca(II) remain in solution. adaptable extends other biomacromolecules like methylcellulose chitosan, broadening applications. The enables real-time electrocardiograms (ECG), electrooculograms (EOG), electroencephalograms (EEG), electromyograms (EMG), showcasing its potential wearable, biocompatible electronics healthcare.

Язык: Английский