Electronic skins (e‐skins), which are mechanically compliant with human skin, are regarded as ideal electronic devices for noninvasive human–machine interaction and wearable devices. In order to fully mimic human skin, e‐skins should possess reliable mechanical properties and be able to resist external environmental factors like heat, cold, desiccation, and bacteria, while perceiving multiple external stimuli, such as temperature, humidity, and strain. Here, a transparent, mechanically robust, environmentally stable, versatile natural skin‐derived organohydrogel (NSD‐Gel) is nanoengineered through the integration of betaine, silver nanoparticles, and sodium chloride in a glycerol/water binary solvent. The transparent NSD‐Gel e‐skin exhibits outstanding tensile strength (7.33 MPa), puncture resistance, moisture retention, self‐regeneration, and antibacterial properties. Additionally, the NSD‐Gel e‐skin possesses enhanced cold/heat resistance and stimuli‐responsive characteristics that effectively sense environmental temperature and humidity changes, as well as physiological human body motion signals. In vitro and in vivo experiments show that the NSD‐Gel e‐skin confers desired biocompatibility and tissue protective properties even in extremely harsh environments (−196 °C to 100 °C). The NSD‐Gel e‐skin has great potential for applications in multidimensional wearable electronic devices, human‐machine interfaces, and artificial intelligence, generating a versatile platform for the development of high‐performance e‐skins with on‐demand properties.

As a vital component of wearable electronics, flexible strain sensors have drawn vast attention due to their capabilities in capturing postures and monitoring various human activities. However, most emerging strain...

Ultra-strong adhesive, self-healable and electroactive bio-based hydrogels (CAM-Gels) were nano-engineered as a conductive adhesive layer for the on-demand fabrication of a brand -new sandwich-inspired leather-based smart electronic sensing floor.

Natural skin–derived products, as traditional wearable materials are widely used in people's daily life due to the products’ excellent origins. Herein, a versatile daytime‐radiation cooling wearable natural skin (RC‐skin) consisting of the collagen micro‐nano fibers with the on‐demand double‐layer radiation cooling structure is nano‐engineered through the proposed facile “synergistic inner–outer activation” strategy. The bottom layer (inner strategy) of the RC‐skin is fabricated by filling the skin with the Mg11(HPO3)8(OH)6 nanoparticles by soaking. The superstratum (outer strategy) is constituted by a composite coating with an irregular microporous structure. The RC‐skin harvests the inherent advantages of natural building blocks including sufficient hydrophobicity, excellent mechanical properties, and friction resistance. Owing to the subtle double‐layer structure design, the solar reflectance and the average emissivity in the mid‐infrared band of RC‐skin are ≈92.7% and ≈95%, respectively. Therefore, the RC‐skin's temperature in the sub‐ambient is reduced by ≈7.5 °C. Various outdoor practical application experiments further substantiate that RC‐skin has superior radiation cooling performances. Collectively, RC‐skin has broad‐application prospects for intelligent wearing, low‐carbon travel, building materials, and intelligent thermoelectric power generation, and this study also provides novel strategies for developing natural‐skin–derived functional materials.

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