Beijing Research Institute of Mechanical and Electrical Technology

Recent Advances in Wearable Tactile Fiber Bragg Grating Sensors

With the advancement of wearable tactile technology, complex multi-site and multimodal sensing has become an inevitable trend [...]

Thermoacoustic systems for electrical power generation: Review of conversion technologies, performance characteristics, and practical applications

Despite their potential to convert waste heat into electricity with no moving parts in the thermoacoustic core, thermoacoustic electricity generators (TAEGs) remain underutilized in industrial energy-recovery applications. Industrial processes collectively reject 20-50% of the in...

Stabilizing Pt by Introducing TaON to Enhance the Long-Term Stability in Zinc-Air Batteries

Abstract For many years, the application of zinc-air batteries (ZABs) has been plagued by the limited durability of platinum (Pt)-based catalysts. Here, we overcome this problem by adopting an intelligent catalyst design, introducing tantalum (oxy)nitrides (TaON) as a carrier to...

V-Shaped {Cu8}-Added Polyoxometalate for Visible-Light-Driven Hydrogen Evolution and Photothermal Conversion

Abstract A {Cu8}-added polyoxometalate (Cu8AP), H3Cs13[CuB(OH)3(GeW6O26)Cu8(H2O)2(GeW9O34)2]·2Cl·15H2O (1), was synthesized via the lacunary directing synthetic strategy. Visible-light-driven photocatalytic H2 evolution performance revealed an exceptional evolution rate of 12632....

Ab Initio Chemical Kinetics of Radical–Radical Reaction of CH3O with NO2

Abstract This work theoretically investigated the ab initio chemical kinetics of the radical–radical reaction between the methoxy (CH3O) and nitrogen dioxide (NO2), which represents a key C–N interaction in ammonia/hydrocarbon cocombustion. The stationary-point energies were dete...

Fluorescent Molecular Scaffold-Building Mononuclear Iron(II) Complexes Display Synergistic Spin Crossover and Fluorescence Behaviors

Abstract Magnetic fluorescent bifunctional spin crossover (SCO) materials show switchable magnetic and optical properties and have attracted continuous research interest due to their potential application in magneto-optical switches and multi-sensors. Herein, we report two octahe...

Redox Decoupling Modulates Multi‐Electron Reaction in Mn‐Rich NASICON Cathode for High‐Energy Sodium‐Ion Batteries

ABSTRACT Coupled redox reactions caused by voltage hysteresis limit the application of Mn‐rich NASICON cathodes for sodium‐ion batteries. Herein, this work fabricates a Na 3.6 Mn 1.25 Ti 0.7 Ni 0.05 (PO 4 ) 3 (NM1.25TP‐Ni) cathode material achieving redox decoupling of Mn/Ti. Spe...

Design and Compression Failure Mechanisms of Stiffener–Skin Integrated CFRP Stiffened Panel

ABSTRACT Traditional cobonded CFRP stiffened panels are susceptible to premature stiffener–skin debonding under axial compression. This behavior is mainly caused by discontinuous load transfer across adhesive interfaces, leading to interface‐dominated failure. To investigate the...

Fractional-Quantum Ferroelectrics: A Route to High-Mobility Ferroelectric Semiconductors

Abstract Ferroelectric semiconductors are promising for multifunctional electronics, yet their typically low carrier mobilities remain a major limitation. Using first-principles phonon-limited transport calculations for monolayer In2Se3, we show that this limitation depends criti...

Differential Coupling of Nanoparticle Translational and Rotational Diffusion to Polymer Relaxation Modes in Unentangled Polymer Melts

Abstract The diffusion of spherical nanoparticles (NPs) in unentangled polymer melts is investigated using coarse-grained molecular dynamics simulations. We show that for both translational and rotational diffusion, when the NP diameter d is smaller than a characteristic length l...

Interpretable Spatiotemporal Coupling Network for Robust Emission Prediction and Implicit Mechanism Mining in Sludge Gasification

Abstract Thermochemical gasification is a vital green technology for sewage sludge reduction and resource recovery, yet real-time emission forecasting remains exceptionally challenging due to chaotic operational fluctuations, pronounced time lags, and noisy sensor data. Conventio...

Photothermal-Induced In Situ Crystallization of Perovskite Nanocrystals and the Application on Micro–Nano Defect Detection

Abstract Micro–nano defects on the optical elements are critical factors limiting the maximum light intensity tolerance and system reliability. Developing an accurate and efficient method for defect detection remains a significant technical challenge. Notably, under laser irradia...

Computer-Assisted Workflow for DNA Origami-Engineered Triangular Nanopores

Abstract Synthetic nanopores engineered by DNA origami provide a highly biocompatible and structurally programmable platform for elucidating the transmembrane mechanisms of functional macromolecules. However, engineering large DNA nanopores exceeding 30 nm in width remains a sign...

Halogen-free Flame-Retardant and Smoke-Inhibiting Rigid Polyurethane Foam with Modified Expandable Graphite and Layered Double Hydroxides

Abstract Developing rigid polyurethane foam (RPUF) featuring well-balanced heat insulation, mechanical robustness, flame retardancy, and smoke inhibition properties through a halogen-free method is crucial for the advancement of building heat-isolated materials. In this study, a...

Enzymatic Hydroxylation vs Desaturation: Mechanistic Insights from the Case of Diiron Alkane Monooxygenase AlkB

Abstract Understanding the enzymatic catalytic preferences for hydroxylation or desaturation could provide useful information for the potential regulation and engineering of enzymatic activity. AlkB, a non-heme diiron-dependent alkane oxygenase that catalyzes the hydroxylation of...

Coordination Environment Modulation of Laser Sensitivity in Copper(II) APTTz Energetic Complexes: From Aqua to Perchlorate Ligation

Abstract Coordinated water is a major obstacle in the design of high-performance energetic coordination complexes because inert aqua ligands lower energy density and suppress laser sensitivity. Herein, we report a simple strategy for removing coordinated water by changing the Cu:...

Research on Quality Inspection of PBF-LB 022Cr17Ni12Mo2 Steel Using Laser Ultrasonic Testing Technology

In this study, laser powder bed fusion (PBF-LB) 022Cr17Ni12Mo2 steel plates with dimensions of 50 mm × 50 mm × 2 mm were fabricated using a laser power of 206 W, a scanning speed of 900 mm/s, a hatch spacing of 90 μm, a layer thickness of 30 μm, and an interlayer scanning rotatio...

Bio‐Inspired Oligocellulose‐Regulated Ice‐Water Interfaces Enable Sustained Ion Transport in Frozen Aqueous Zinc Batteries

ABSTRACT While highly concentrated salts and organic components enhance the subzero performance of zinc batteries by improving electrolyte fluidity and conductivity, their high cost and environmental pollution negate the inherent sustainability and economy of aqueous electrolytes...

Superconducting Hydride Mg2RhH6 Experimentally Achieved at Lower Pressure

Abstract Although tremendous progress has been made in recent years in the field of polyhydride superconductors, the realization of high critical temperature (Tc) superconductivity still relies on formidable high pressures. Searching for superconducting hydrides at lower pressure...

Spontaneous ChlorineGeneration via Interfacial Oxidationof Chloride by O2 on Acidic Microdroplets

Abstract Reactive chlorine species significantly influence atmospheric chemistry, yet their sources remain inadequately defined. We have discovered a spontaneous formation pathway for substantial molecular chlorine (Cl2) from the oxidation of chloride (Cl–) through interfacial ox...