Bio-inspired molecular design and synthesis of high-performance recyclable cross-linked polymers is reported. Reversible cross-links between hard segments are incorporated into linear segmented polyurethane via Diels-Alder reaction maleimide pendant group furan cross-linker. The materials form hierarchical structure exhibit excellent properties with high stiffness, strength toughness, can be easily thermally reshaped re-mended.

Tunnel-type vanadium oxides are promising cathodes for aqueous zinc ion batteries. However, unlike layer-type with adjustable layer distances, enhancing ion-transport kinetics in tunnels characterized by fixed sizes poses a considerable challenge. This study highlights that the macroscopic arrangement of electrode crucially determines tunnel orientation, thereby influencing transport. By changing material morphology, orientation can be optimized to facilitate rapid diffusion. In...

In this paper, an asymmetric plasmonic structure composed of a MIM (metal-insulator-metal) waveguide and rectangular cavity is reported, which can support double Fano resonances originating from two different mechanisms. One resonance originates the interference between horizontal vertical in cavity. And other induced by asymmetry structure. Just because originate mechanisms, each be well tuned independently changing parameters during tuning process, FOMs (figure merit) both keep unchanged...

Thermoresponsive hydrogel-based actuators are highly important for fundamental research and industrial applications, while the preparation of temperature-driven bilayer hydrogel with rapid response to bend recover properties remains a challenge. To date, most based on polymers only lower critical solution temperature (LCST) or an upper (UCST), which need more time just in small range bending angle. Herein, we propose new strategy design synthesize fully actuator, consists poly(N-acryloyl...

In this study, based on a nonsingular weight function, the improved element-free Galerkin (IEFG) method is presented for solving elastoplastic large deformation problems. By using interpolating moving least-squares (IMLS) to form approximation and weak total Lagrange formulation of problems discretilized equations, which solved with Newton–Raphson iteration method, we obtain formulae IEFG numerical examples, influences penalty factor, scale parameter influence domain functions computational...

Density functional theory (DFT) calculation is carried out to access the band structure and density of states (DOS) based on models TiO2 nanoparticle, nanotube, nanosheet, predicting order photocatalytic activity for three different nanostructures. Sol–gel method hydrothermal are used achieve desired morphologies: nanoparticles, nanotubes, nanosheets (fragmentized nanotubes). The ranks in > nanotubes which consistent with theoretical prediction. It was revealed that enlargement gap caused by...

Vitrimers are fascinating thermoset polymers to the industry since they can be recycled and reprocessed without compromising their mechanical strength solvent resistance. Particularly, transesterification reaction in epoxy resin (ER) vitrimers usually requires incorporation of a catalyst, whereas most reports only focused on investigating catalytic effect small molecules, such as zinc acetate (Zn(OAc)2) triazabicyclodecene (TBD). In this work, polymer poly(acrylonitrile-co-zinc methacrylate)...

Metasurfaces have found broad applicability in free-space optics, while its potential to tailor guided waves remains barely explored. By synergizing the Jones matrix model with generalized Snell’s law under phase-matching condition, we propose a universal design strategy for versatile on-chip mode-selective coupling polarization sensitivity, multiple working wavelengths, and high efficiency concurrently. The direction, operation frequency, excited mode type can be designed at will arbitrary...

Abstract Silicon‐based photodetectors show attractive prospects due to their convenient preparation, high detectivity, and complementary metal–oxide–semiconductor compatibility. However, they are currently limited by low responsivity sharp decay at sub‐bandgap wavelength. Although the aforementioned limitation can be partly solved femtosecond laser processing, surface defects carrier activation rates result in a large dark current narrow spectral response, which unsatisfactory. Herein, rapid...

Polymeric materials combining good mechanical performances with self-healing ability and malleability have attracted dramatic attention, but it presently remains a challenge for the facile fabrication of such high-performance materials, not to mention atomic-level characterization understanding molecular origin macroscopic properties. Herein, we proposed strategy fabricate dual-cross-linked poly(n-butyl acrylate) polymer material, in which self-complementary quadruple hydrogen bonding...

Micro-seismic monitoring during mining operations generates spatiotemporal data that could indicate strata fractures and deformations leading to water inrush anomalies. However, current prediction methods face challenges from the non-stationarity multi-dimensionality, resulting in low precision effectiveness. This study proposes an innovative data-driven approach for predicting using field 3D micro-seismic data. The couples machine learning deep models analyze events, pre-processed...

Abstract Aqueous Zn battery is promising for grid‐level energy storage due to its high safety and low cost, but dendrite growth side reactions at the metal anode hinder development. Designing with (002) orientation improves stability of anode, yet grain boundaries remain susceptible corrosion growth. Addressing these intergranular issues crucial enhancing electrochemical performance (002)‐textured Zn. Here, a strategy based on boundary wetting fill regions mitigate reported. By...

Abstract Rechargeable aqueous zinc batteries are promising but hindered by unfavorable dendrite growth and side reactions on anodes. In this study, we demonstrate a fast melting‐solidification approach for effectively converting commercial Zn foils into single (002)‐textured featuring millimeter‐sized grains. The melting process eliminates initial texture, residual stress, grain size variations in diverse foils, guaranteeing the uniformity of Zn. (002)‐texture ensures large‐scale epitaxial...

Aluminum nitride nanobelts with hexagonal structure were successfully synthesized by evaporating aluminum powder in ammonia/nitrogen atmosphere at 1200 °C. The as-prepared AlN have a rectangular cross section width of 30−500 nm and length about 100 μm. optical characterization indicates that the vibration modes nanobelt agree well those film despite its geometry. This geometry could be important for construction GaN-based nanoheterostructures future nanoelectronics.

To systematically investigate the influence of ligands with a large conjugated π-system on structures and properties their complexes, we synthesized seven ZnII complexes two anthracene-based carboxylic ligands, anthracene-9-carboxylic acid (HL1) anthracene-9,10-dicarboxylic (H2L2), sometimes incorporating different auxiliary {[Zn(L1)2(H2O)2](H2O)}∞ (1), [Zn5(μ3-OH)2(L1)8(2,2′-bipy)2] (2), Zn2(L1)4(phen)2(μ-H2O) (3), {[Zn(L1)2(4,4′-bipy)(CH3OH)2]}∞ (4), {[Zn(L2)2](Hdmpy)2(H2O)2}∞ (5),...

Hydrogels have received considerable attention as an innovative material due to their widespread applications in various fields. As a soft and wet material, its mechanical behavior is best understood terms of the viscoelastic response periodic deformation, which closely related microscopic chemically/physically cross-linked structures. Herein, dual-cross-linked (DC) hydrogel, where physically network by ionic coordination (Fe3+) imposed on chemically poly(acrylamide-co-acrylic acid) network,...

Hydrophobic elastomers are required for use in industry and daily life because of their versatile properties. Developing a hydrophobic elastomer with self-healing abilities excellent mechanical performance has been very challenging the mutually exclusive nature these Herein, supramolecular polydimethylsiloxane (PDMS) properties were designed through synergetic combination multistrength H-bonds disulfide bonds. The hierarchical formed urethane, urea, 2-ureido-4[1H]-pyrimidinone (UPy) moieties...

Abstract The field of nonlinear optics has grown substantially in past decades, leading to tremendous progress fundamental research and revolutionized applications. Traditionally, the optical nonlinearity for a light wave at frequencies beyond near-infrared is observed with very high peak intensity, as most materials only electronic dominates while ionic contribution negligible. However, it was shown that can be much larger than one microwave experiments. In terahertz (THz) regime, phonon...

We report the observation of a sharp absorption line in photoluminescence excitation spectra individual naturally occurring quantum dots narrow (2.8 nm) $\mathrm{GaAs}/\mathrm{Al}{}_{0.3}\mathrm{Ga}{}_{0.7}\mathrm{As}$ well that is remarkably constant throughout sample. propose it identified as delocalized two-dimensional exciton. This assignment confirmed by and diffusion experiments.

Indium borate has been prepared by a sol–gel method. The structure, morphology, and photophysics of the resultant photocatalysts have studied via techniques X-ray diffraction (XRD), transmission electron microscopy (TEM), diffuse reflectance UV–visible light spectroscopy. These used to photodegrade 4-chlorophenol. photocatalytic activity depends on annealing temperature during preparation. It is found that borates can exhibit high photodegradation under UV-light irradiation, for which...