Articles

Natural polyphenols reduce metal ions into metal nanoclusters in water followed by subsequent self-assembly into metal-ornamented polyphenol supramolecular (MOPS) assemblies. MOPS assemblies, which integrate the merits of both the natural polyphenols and metal nanoclusters, possess excellent solubility, stability, and free radical scavenging capacity in aqueous solutions and enable further functional material engineering via polyphenol chemistry.

Aptamers functionalized smart photonic hydrogels based on two-dimensional photonic crystal (2DPC) were constructed and used as a facile biosensor for the accurate detection of thrombin in human serum by simply measuring the Debye diffraction ring of 2DPC without needing sophisticated instruments.

A new type of solid-sate colossal barocaloric material was fabricated by exploiting the amorphous high entropy inherited from huge disorder of liquid phase in solidified PEG(HO(CH₂CH₂O)_nH) by introducing 5 wt.% PET((C₁₀H₈O₄)_m) for copolymerization. Although PEG loses –OH end mobility, high entropy still retains in amorphous solid. Consequently, a colossal barocaloric entropy change as high as ΔS_p ∼ 416 J·kg⁻¹·K⁻¹ under a low pressure of 0.1 GPa was demonstrated.

Extracellular matrix (ECM) bioscaffolds have been widely studied to repair bladder tissue defects. In this work, ECM bioscaffolds were derived from decellularized sheets and then modified with vascular endothelial growth factor (VEGF)-conjugated superparamagnetic iron oxide nanoparticles to promote angiogenesis. The biomimetic proangiogenic scaffold accelerated vascularization in vivo and promoted urothelium and smooth muscle regeneration. These findings demonstrate that the developed biomimetic proangiogenic scaffold possesses great potential for bladder regeneration applications.

Dual-responsive disassembly of core-shell nanoplatform (Au@MPN) is reported with self-supplied H₂O₂ and autocatalytic Fenton reaction for enhanced chemodynamic therapy. Both ATP and low pH can disassemble the Au@MPN to release Fe(III), which can then be reduced into Fe(II) by the simultaneously released tannic acid. In particular, the exposed gold nanoparticles can catalyze the oxidation of intracellular glucose to produce H₂O₂. Subsequently, Fe(II) and the self-supplied H₂O₂ induce an efficient Fenton reaction for chemodynamic therapy by generating hydroxyl radicals. Additionally, tumor growth and melanoma metastatic lung cancer can be effectively suppressed by Au@MPN.

In this work, the formation of DNA supramolecular hydrogels was controlled by tuning rigidity of building blocks. The strand displacement reaction was used to in situ tuning the rigidity of the molecular network of the DNA supramolecular hydrogel. Our experiments revealed that the rigidity plays an important role in the formation and mechanical properties of hydrogels.

Tuning of the oscillations within a single nanodevice is a vital factor for harnessing them to neuromorphic computing. Herein, tuning of the oscillation properties of spin structures within a single permalloy circular disk achieved by manipulating the dimensionality of spin structures is directly observed by the time-resolved X-ray microscopy.

The wafer-scale homogeneous growth of WS_2xSe_2(1-x) monolayer alloys with full-range composition and bandgap modulation is demonstrated using metal–organic chemical vapor deposition. In these 2D TMD alloys, the bowing effect is substantially alleviated, enabling systematic bandgap modulation with the linear relationship between optical bandgap and alloying composition.

We developed all-solution-processed broadband photodetectors based on the wafer-scale perovskite quantum dots (PQDs)/MoS₂ through light management via the monochromatization effect of the PQDs. The rational nanohybrid-based photodetectors exhibited broadband photodetection behavior that retained high photocurrents over a wide spectral range and also show superb air stability and exceptional bending durability.

In this study, we prepared OKPP hydrogel constructed from, OKGM, ε-PL, and γ-PGA modified by dopamine and l-cysteine. OKPP hydrogel has the ability of injectable and self-healing through the thiol-aldehyde addition and schiff-base reactions, which can solve the problem of long time use and gel breaking. OKPP hydrogel has antioxidant properties and can scavenge free radicals. This hydrogel has good antibacterial effect on Pseudomonas aeruginosa and Staphylococcus aureus, and also has strong adhesion. In the burn wound infection model, OKPP hydrogel can promote wound healing and reduce the production of inflammatory factors. It is proved that this hydrogel has good clinical potential as a wound dressing for burn wound infection.

A facile chemical vapor method is developed for large-scale synthesis of CsPbX₃-ZSM-5 composites. Owing to the effective confinement and encapsulation of CsPbBr₃ QDs by ZSM-5, the composites possess excellent photophysical properties and ultrahigh stability. The prepared composites are applied in white light-emitting diodes (WLEDs) and multicolor-coded anti-counterfeiting inks. This technique provides the probability for commercial production of these perovskite composites with robust stability.

A magnetic superhydrophobic tubular actuator for water transport has been designed and successfully demonstrated. Under the control of an externally applied magnetic field, the actuator could deform correspondingly and propel the water droplet in the tube to move forward with a high speed up to 16.1 cm/s, which is the highest velocity measured for water transport in a closed actuator system. Several representative liquids (i.e., phosphate buffer solution, artificial urine, and sweat) widely used in biomedical engineering have also been achieved to transport in the tubular actuator with negligible liquid loss under an applied magnetic field.

A very active research area in superconductivity is the performance improvementofthe current carrying capability (J_c). Here, we show that the depairing current (J_d) can beincreased by controlling the penetration depth (λ) and coherence length (ξ) in the two most representative materials: in REBa₂Cu₃O_y we increased the carrier density to decrease λ and ξ, and in BaFe₂(As_1-xP_x)₂ we tuned the chemical pressure. The combination ofthese thermodynamic and flux-pinning optimization routes leads to a dramatic increase of J_c to J_c ~150 MA/cm² at 4.2 K (32.4% of J_d) for REBa₂Cu₃O_y, the highest value ever reported for any superconductor.

High quality thin films of the intrinsic magnetic topological insulator MnBi₂Te₄ were studied by means of optical spectroscopy in a broad spectral range from THz to UV. By analysing the optical conductivity at room temperature for different thickness, the presence of surface topological states superimposed to the bulk electrodynamics response was highlighted. For the thinnest film, where charge transport is dominated by the Dirac surface states, the interplay between the magnetic phase transition and the topological surface states was investigated. Crossing the Neèl temperature, the optical conductivity measurements indicate the opening of a magnetic gap at the Dirac node

A strain coupling device of QLED array based on Si micropillars is designed in this work. The device has high reference value in the field of pressure sensing and Si-based photonic integration.

In this work, an anticancer drug, metformin, has been used to promote DNA single strands to assemble into well-defined DNA nanostructures. The resulting metformin-DNA complex nanostructures can simultaneously deliver metformin and KRAS siRNA to synergistically treat KRAS-mutated, non-small cell lung cancer in vivo.

Our experiments and ab initio calculations demonstrate that a defect dipole (μ_def) composed of Cu³⁺ and oxygen vacancy in a ferroelectric BaTiO₃ ceramic is coupled with spontaneous polarization (P_s). By designing an arrangement μ_def, a shifted polarization (P)-electric field (E) loop is obtained because of the strong interaction between μ_def and P_s. The resultant ferrorestorable polarization delivers an extraordinarily large effective relative permittivity, beyond 7,000, with a high recoverable energy density (U_rec) and efficiency. This work paves the way to realizing efficient energy storage ceramic capacitors for self-powered applications.

Biohybrid micro/nanorobots that integrate biological entities with artificial nanomaterials have shown great potential in the field of biotechnology. Here, the magnetic plant biobots (MPBs) were fabricated by employing tomato-callus cultivation engineering in the presence of Fe₃O₄ nanoparticles that are capable of active movement and directional guidance under a transversal rotating magnetic field. The MPBs enabled rapid and efficient removal of chlorpyrifos (approximately 80%), a hazardous nerve gas agent that causes severe acute toxicity, and recovery using an external magnetic field. The eco-friendly plant biobots described here demonstrate their potential in environmental applications.

The first prototype of the portable protein analyzer made with liquid crystal polymer microtubes is constructed to perform the processes of suspending, depositing, and separating for protein extraction and detection by combined photo/magnetic control. Such an analyzer specifically purifies, enriches, and detects various proteins in complex samples in a short time (20 min) and with trace sample consumption (5 μL) and a low detection limit (1 μg mL^-1).

Solid-phase crystallized Ce and H codoped In₂O₃ (ICO:H) transparent conducting films achieve very high electron mobility values of over 100 cm²/Vs and suitable low-carrier concentration, leading to high electrical conductivity and broadband optical transparency. However, a high-temperature annealing process for solid-phase crystallization is necessary to obtain high mobility. Therefore, such a high processing temperature limits the formation and adoption of these films on heat-sensitive flexible substrates. Herein, we used excimer laser irradiation to achieve an ICO:H film on flexible polyethylene terephthalate that had ultrahigh mobility of 133 cm²/Vs, which is the highest among those reported for flexible transparent electrodes.