Humidity-/Sweat-Sensitive Electronic Skin with Antibacterial, Antioxidation, and Ultraviolet-Proof Functions Constructed by a Cross-Linked Network

Abstract

Most electronic skins (e-skins) show unique performance or possess sensory functions. The raw materials used for their preparation are potentially toxic or harmful, and there may be problems such as poor compatibility between the conductive fillers and polymers. In this paper, a silver-loaded nanocomposite film (PVA/CMS/vanillin/nanoAg) was prepared by the in situ reduction method in a greener route. The mechanical properties of this nanocomposite film had improved with a tensile strength of 30.95 MPa, an elongation at break of 101.9%, and a Young’s modulus of 10.62 MPa. In the composite matrix, a cross-linked network was constructed based on the coordination and hydrogen bonds, which was conducive to the stability of the reduced AgNPs and AgNWs. When applied as an e-skin in humidity/sweat sensors and wearable electronics, the nanocomposite film responds to humidity within 60 s and records the electric signals of human joint movements and skin sweating with a response range of 0–140% to strain at 93% RH. This kind of e-skin has excellent antibacterial and antioxidant activities and shows an outstanding ultraviolet-proof performance, which provides a greener promising reference route for the design of wearable e-skins to monitor the health and movements of humans.

Sweat lactate sensor for detecting anaerobic threshold in heart failure: a prospective clinical trial (LacS-001)

“…During physical activity, such as exercise, complex physiological changes have been observed in the human body 18 . Current wearable devices only obtain physical or electrophysiological information, such as heart rate, exercise, intermittent blood pressure, arterial oxygen saturation, and electrocardiogram; however, advances in sensing modalities are expected to help obtain a detailed picture of the complex physiological changes that occur during exercise [19][20][21] . The continuous measurement of lactate levels during exercise can provide useful insights into physiological changes that are otherwise not possible to obtain based on physical or electrophysiological information 22 .…”

Sweat lactate sensor for detecting anaerobic threshold in heart failure: a prospective clinical trial (LacS-001)

“…During physical activity, such as exercise, complex physiological changes have been observed in the human body [23]. Current wearable devices only obtain physical or electrophysiological information, such as heart rate, exercise, intermittent blood pressure, arterial oxygen saturation, and electrocardiogram; however, advances in sensing modalities are expected to help obtain a detailed picture of the complex physiological changes that occur during exercise [24][25][26]. The continuous measurement of lactate levels during exercise can…”

Lattice Strain Engineering on Metal‐Organic Frameworks by Ligand Doping to Boost the Electrocatalytic Biomass Valorization

“…These derivatives have been used in fungicides, antioxidants, anti-hardeners, drug intermediates, etc. [18][19][20][21][22] Nevertheless, the intricate molecular structure and inherent degradation resistance of lignin still hinder its depolymerization toward high-value utilization, especially through electrocatalytic process. Therefore, to break the depolymerization barrier for lignin valorization, enhancing the contact and adsorption between the electrocatalyst and reactant is of great importance.…”