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Silver nanowires (AgNWs) are becoming ideal materials for preparing flexible transparent conductive films (TCFs) due to their excellent properties. The high stability of AgNW-based TCFs is promising yet remains challenging. Herein, a simple and efficient interface assembly strategy is introduced via the top-down spray transfer assembly to enhance interface bonding, resulting in semiembedded TCFs using high-aspect-ratio AgNWs and monodisperse nanosilica microspheres (SiO2NPs) with the help of a thiol-ene click-based polyurethane acrylate (PUA) optical coating. The organic–inorganic composite antireflection film composed of SiO2NPs and PUA coating solves the problem of poor adhesion and uneven distribution of AgNWs on the substrate by electrostatic adsorption. The addition of SiO2NPs was shown to improve the connectivity of AgNWs, thus achieving high transparency and sheet resistance at lower AgNWs spray rates (sheet resistance of 13.4 Ω/sq, light transmittance of 93.9%). Indeed, the TCFs introduced in this study outperform the majority of existing metal oxide or AgNW-based TCFs, retaining the flexibility of AgNWs while possessing the high adhesion, stability, and conductivity uniformity of metal oxide-based TCFs. They are expected to replace traditional metal oxide nanoconductive materials with high brittleness and cost, playing a pivotal role in devices such as flexible displays. [ABSTRACT FROM AUTHOR]

Precise earthquake locations and InSAR (Interferometric Synthetic Aperture Radar) deformation observation are the major methods to understand the earthquake occurrence and disaster-causing process. This paper proposes a processing framework for analyzing strong earthquake mechanisms from one-dimensional velocity inversion to precise earthquake locations combined with InSAR deformation observation, and discusses earthquake-generating fault and dynamic mechanisms of tectonic deformation. We analyzed the Menyuan Ms 6.9 earthquake in 2022 and discuss the historical seismic activities and corresponding stress adjustment processes in the research region. To analyze and study the seismogenic structure and mechanism of the earthquake, we investigated the spatial and temporal distribution characteristics of the Menyuan earthquake sequence and analyzed the InSAR coseismic deformation field. We obtained the precise locations of the main shock and aftershocks and the coseismic InSAR deformation field of the main shock. It was confirmed that the Ms 6.9 earthquake was a shallow sinistral strike-slip earthquake, which led to the sequential activation of the Tuolaishan and Lenglongling faults. The main seismogenic fault of the mainshock was the northwestern end of the Lenglongling fault, and the earthquake rupture was segmented. It can be inferred that the earthquake was a stress-adjusted event triggered in the Qilian-Haiyuan tectonic belt caused by the northeasterly push of the Qinghai-Tibet Plateau. The risk of moderate to high earthquakes in the region remains high in the future, requiring enhanced seismic observations. [ABSTRACT FROM AUTHOR]

Highlights Herein, an efficient and rapid one‐step approach to construct CS@Ag nanohybrids through in‐situ reduction of AgNO3 with L‐ascorbic acid using chitosan (CS) as carrier only at room temperature was presented. Novel polyurethane/CS@Ag composite films with remarkable properties were fabricated via the reaction of CS@Ag nanohybrid as an antibacterial and reinforcing agent with bis(2‐hydroxyethyl) terephthalate (BHET)‐based polyurethane. With the increase of CS@Ag content, the antibacterial rate for polyurethane against Staphylococcus aureus and Escherichia coli increases. The antibacterial rate of polyurethane with 20 phr CS@Ag against S. aureus is 85.5%, and that containing 30 phr CS@Ag against E. coli is 94.9%. Thereby, the synergistic effect of CS and Ag can effectively improve the antibacterial rate of polyurethane. Meanwhile, the bond strength and tensile strength of polyurethane containing 20 phr CS@Ag are up to 8.72 MPa (improved by 74.3%) and 20.1 MPa (enhanced by 130.5%), respectively. Indeed, this work may unlock new possibilities for developing antibacterial and enhanced polyurethanes, which are expected to applied in the medical devices, food packaging, and automotive industries. CS@Ag was efficiently fabricated by in‐situ reduction via a one‐step approach. BHET is used as a novel chain extender for PU. CS@Ag is able to fully exert the synergistic effect of CS and Ag. CS@Ag endows PU with high strength and excellent antimicrobial properties. [ABSTRACT FROM AUTHOR]

Incorporation of functional nanofillers can unlock the potential of polymers as advanced materials. Herein, single-layered and three-dimensional reduced graphene oxide (rGO)/Ti 3 C 2 T x (B-rGO@Ti 3 C 2 T x ) nanohybrids were constructed using bis(2-hydroxyethyl) terephthalate (BHET) as a coupling agent between rGO and Ti 3 C 2 T x through covalent and hydrogen bonds. It is found that BHET can not only resist the weak oxidization of Ti 3 C 2 T x to some degree but also prevent the self-stacking of Ti 3 C 2 T x and rGO sheets. Then, B-rGO@Ti 3 C 2 T x was used as a functional nanofiller and three-dimensional chain extender for preparing the waterborne polyurethane (WPU) nanocomposite through in situ polymerization. Compared with WPU nanocomposites with an equivalent amount of Ti 3 C 2 T x /rGO@Ti 3 C 2 T x , although containing an equivalent amount of BHET, WPU/B-rGO@Ti 3 C 2 T x nanocomposites show significantly improved performance. For example, 5.66 wt % of B-rGO@Ti 3 C 2 T x endows WPU with a high tensile strength of 36.0 MPa (improved by 380%), thermal conductivity of 0.697 W·m -1 ·K -1 , electrical conductivity of 1.69 × 10 -2 S/m (enhanced by 39 times), good strain-sensing behavior, electromagnetic interference (EMI)-shielding performance of 49.5 dB in the X-band, and excellent thermal stability. Therefore, the construction of rGO@Ti 3 C 2 T x nanohybrids with the aid of chain extenders may unlock new possibilities of polyurethane as smart materials.