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Poor adhesion between silver nanomaterials and substrates seriously restricts the development of electronic composite devices. In this work, flexible and conductive silver nanowires/fibroin/degummed silk (AgNWs/fibroin/dSF) composite fibers with high adhesion and conductivity via capillarity-assisted assembly for electromagnetic interference (EMI) shielding are designed and fabricated by a facile and scalable all-solution dip-coating method. The nanocomposite fiber possesses high conductivity with a resistance of 8.8 Ω/cm at a low AgNWs/fibroin loading of 19.3 wt%. The assistance of the capillary force in the fiber highly increases the mass of deposited AgNWs. Furthermore, the AgNWs show high adhesion on the fibers in the tape-peel test. The enhanced deposition factors and mechanisms are detailly investigated. Moreover, the composite fibers are further woven into a soft and flexible fabric. The composite fabric shows an absorption-dominated EMI shielding performance with an efficient shielding effectiveness of 38 dB. The capillarity-assisted assembly is an attractive procedure for constructing high-conductive and uniform coatings for a wide application. [Display omitted] [ABSTRACT FROM AUTHOR]

• A highly sensitive and strain-insensitive fiber-based wearable temperature sensor. • A conductive ligand chemically grafts onto the surface of silver nanowires. • Theoretically calculate the electrical conductivity properties of the ligands. • Silver nanowire network shows high conductivity with decreased junction resistance. • Modified silver nanowires tightly absorb on a stretchable covering yarn. The real-time monitoring of human temperature can facilitate efficient family health supervision, disaster diagnosis, and treatment. To meet these requirements, there is an urgent need to develop fibre-based temperature sensors with high sensitivity, fast response rates, and excellent stability. This study investigated the positive temperature characteristics of a stretchable and strain-insensitive temperature sensor with a chemically modified silver nanowire (AgNW). The regulation of the surface polymer on the AgNWs using a conductive ligand of polyaniline-L-cysteine ethyl ester hydrochloride (PANI-LCO) improved the network conductivity by decreasing the junction resistance. In addition, the pristine flexibility and helicoid structure of a spandex polyurethane (SP) covered yarn substrate proved advantageous for the ultra-stretchability of the temperature sensor. Therefore, the synergistic effect of the PANI-LCO-AgNWs and the substrate endowed the composite fibre-based temperature sensor with a high-temperature coefficient of resistance (TCR) of 47.4%/°C and a high stretchability of up to 120%. Furthermore, this study investigated the actual characteristics of the sensor required for the high-performance monitoring of human temperatures. Moreover, theoretical calculations of the electrical distribution of the PANI-LCO ligands further confirmed the experimental chemical modification. A fibre-based temperature sensor can be integrated and woven or sewn onto a cloth or glove with high adaptability. This work provides an efficient strategy to control the surface chemical structure of metal nanomaterials as well as the design of fibre-based temperature sensors that are promising for wearable healthcare management systems, artificial intelligence, electronic skin, and smart robots. [ABSTRACT FROM AUTHOR]

[Display omitted] • Synergistic electroporation/chlorination was constructed to promote i-ARG removal. • DC-EP/Cl 2 promoted the damage of ARB cells for i-ARG leakage and removal. • DC-EP/Cl 2 decreased significantly the HGT frequency than individual treatment. • DC-EP/Cl 2 had much lower energy consumption for i-ARG removal in tap water. • DC-EP/Cl 2 exhibited excellent stability of i-ARG removal within 7-day operation. Conventional chlorination (Cl 2) is inefficient to eliminate intracellular antibiotic resistance genes (i-ARGs) of antibiotic-resistant bacteria (ARB) due to the chlorine permeation barrier and oxidative competition of cell wall/membrane. Herein, we proposed an efficient strategy by constructing synergistic nanowire-induced electroporation (DC-EP) and Cl 2 (DC-EP/Cl 2) with H 2 -reduced TiO 2 nanowire (TiO x NW) electrodes, attempting to promote i-ARG removal via DC-EP-induced cell damage for chlorine permeation and i-ARG leakage. DC-EP/Cl 2 (∼3.7 log and ∼ 60.5 J/L/log) exhibited excellent synergistic effects for ARB inactivation (Escherichia coli) and i-ARG removal (tet(W) , aac(3)-II , and bla TEM – 1), which achieved much larger i-ARG removal and lower energy consumption than the individual 1.5 V-DC-EP (∼0.05 log) and 10 mg/L-Cl 2 (∼0.5 log and ∼ 262.0 J/L/log). Analyses of i-ARG/e-ARG abundances, bacterial cell integrity, and cell morphology indicated that DC-EP-induced cell pores provided channels of chlorine permeation, which was accompanied with oxidative enlargement of cell pores for i-ARG leakage and subsequent degradation. DC-EP/Cl 2 exhibited 15–90 times lower frequency of horizontal gene transfer than the individual Cl 2 disinfection. The TiO x NW-based DC-EP/Cl 2 exhibited excellent stability of i-ARG removal (undetectable ARG abundance and ∼ 20.3 J/L/log) for treating 103 CFU/mL ARB-contaminated tap water within 7-day continuous operation, suggesting its great application potential to alleviate ARG dissemination risk for drinking water. [ABSTRACT FROM AUTHOR]

Supercapacitor with favorable power density and short charging time has attracted tremendous attention. However, its energy-storing capability is still far less than the battery's. Pseudocapacitive materials such as polypyrrole exhibit great potential in the high-capacitance devices. Here, pyrrole was in-situ polymerized on the hollow polyurethane thread (PPy/HPU), then the PPy/HPU acted as working electrode for the electrochemical polymerization of pyrrole to construct PPy nanowires on its outer surface (EPPy-PPy/HPU thread). EPPy-PPy/HPU electrode with abundant PPy nanowires exhibits higher slope value of Δ J /2 vs. scan rates (1.43 mF cm−1) than the PPy/HPU's one (0.327 mF cm−1), indicating its larger active area for electrochemical reaction. Thus, EPPy-PPy/HPU performs a superior capacitance (475.9–221.3 mF cm−2 at 0.25–1.00 mA cm−2) than the PPy/HPU (249.1–92.5 mF cm−2). Two EPPy-PPy/HPU electrodes were penetrated by PVA/H 2 SO 4 gel electrolyte to assemble a solid-state supercapacitor (SSC), which presents a dominant diffusion-controlled capacitance, good rate capability (only falling from 36.25 to 29.5 mF cm−1) and stable energy density (0.915–1.286 μWh cm−1). This fiber-shaped SSC has great potential in the application of wearable energy storage devices. • The combination of spinning and multiple morphology regulation for electrode. • A hollow thread electrode with polypyrrole nanowires for supercapacitors. • Polypyrrole nanowires with good capacitive contribution and rate capability. [ABSTRACT FROM AUTHOR]