Harbin Institute of Technology

Fabrication and Lithium Storage Performance of Trigonal W2N Thin-Film Anode

Abstract The preparation, characterization of materials, and electrochemical performance of trigonal W2N thin film as the anode material for lithium-ion batteries have been reported. The trigonal W2N thin film with the space group of P3̅ was synthesized by the sputtering depositi...

Binary-error compensation iteration for optimized Fourier single-pixel imaging

Fourier single-pixel imaging utilizing binary-speckles modulation offers significant advantages in high-speed acquisition; however, it is inherently constrained by quantization-induced image degradation. To address this challenge, we propose an optimized reconstruction method bas...

Fragility modeling of air-supported membrane roofs under unfavorable fire area growth: A time-based reliability approach

Air-supported membrane structures, characterized by complex roof geometry, diverse combustible layouts, and limited fire resistance, pose challenges to conventional fire analysis models and prescriptive fire protection design. This study develops a time-based fire fragility frame...

Latent versus sensible thermal storage for load-shifting energy management in medium-deep U-type geothermal heat pump systems: A comparative performance analysis

Thermal energy storage can enhance load shifting and extend heat-pump shutdown periods in medium-deep U-type borehole heat exchanger (MDUBHE) heating systems. However, latent and sensible thermal energy storage are commonly evaluated separately, and their differences in heat-supp...

Texture evolution and tension–compression yield symmetry of AZ31 magnesium alloy during cyclic extrusion and compression: Experiments and polycrystal plasticity simulations

Cyclic extrusion and compression (CEC) was selected as a representative variable-strain-path process for mitigating tension–compression yield asymmetry in extruded AZ31 magnesium alloy. A machine-learning-assisted VPSC-dDRX(CA) framework was developed to characterize the associat...

Dissecting the NVIDIA Hopper Architecture through Microbenchmarking and Multiple Level Analysis

This study presents a comprehensive multi-level analysis of the NVIDIA Hopper GPU architecture, focusing on its performance characteristics and novel features. We benchmark Hopper’s memory subsystem, highlighting improvements in the L2 partitioned cache and global memory access c...

Effect of low-level Ti microalloying on the microstructure, mechanical properties, and corrosion behaviour of WAAM-processed nickel-aluminium bronze

The coarse columnar grains and anisotropic mechanical properties inherent to wire arc additive manufacturing (WAAM) significantly limit the performance of nickel-aluminum bronze (NAB) alloy. To address this, the effects of Ti nanoparticles on WAAM-NAB alloy are systematically inv...

Dynamic Vacancy Self-stabilization Strategy on Sulfur-Doped Mn3O4 for Efficient and Durable Seawater Electrolysis

Abstract Vacancy engineering can enhance Mn-based electrocatalysts, yet in seawater, vacancies often promote Cl– adsorption, metal leaching, and stability loss. Here, we report a dynamic vacancy self-stabilization strategy for sulfur-modified Mn3O4 (S-Mn3O4-E), in which lattice-s...

Stability behaviour and design approach of slender concrete-filled double-skin corrugated steel tubes under axial compression

Concrete-filled double-skin corrugated steel tube (CFDCST) members have been proven to exhibit superior mechanical performance, durability, and construction efficiency. In practice, hollow-section CFDCSTs are often designed as slender components in piers, towers, and high-rise bu...

Integrated BSEM-Raman reveals the spatial heterogeneity of mineralogical phases in KOH-GGBS pastes

The large volume utilisation of GGBS from locally available sources remains challenging in China because compositional variability influences the long-term degree of slag reaction, spatial heterogeneity, assemblage, and chemistry of the resulting reaction products. This study int...

Denoising framework for SFCW ground-penetrating radar under spectrally adjacent electromagnetic interference

Stepped-frequency continuous-wave ground-penetrating radar is susceptible to interference spectrally adjacent to its probing frequencies. After down-conversion, interference components with frequency offsets within the passband of the low-pass filter remain at nonzero baseband fr...

Dynamic and techno-economic assessment of solar-assisted biomass gasification for continuous hydrogen production

Solar-driven biomass gasification offers a promising route to produce green hydrogen while storing solar energy in chemical form. To mitigate solar intermittency, a solar/autothermal hybrid gasification strategy based on solar-input-dependent adjustment of gasifying-agent ratios...

Dynamic Sulfur Reservoir Programs Cation-Exchange Kinetics in PbS Quantum Dots for Short-Wave Infrared Imaging Chips

Abstract Cation-exchange synthesis produces monodisperse PbS quantum dots (QDs), yet its central limitation─precursor preparation and dropwise injection─is usually treated as a practical issue. Here, we recast it as sulfur chemical-potential programming; that is, ethyl ziram (EZ)...

Synergistic effects of ionization and displacement damage in GaN HEMTs

The effect of ionization damage on displacement damage in AlGaN/GaN high electron mobility transistors (HEMTs) is investigated via sequential proton and electron irradiation experiments. Electrical degradation is characterized following 170-keV proton irradiation and subsequent 1...

Energy dependence and the differential pass-through of oil price shocks to inflation: evidence from 72 countries

International oil price fluctuations are an important source of external inflation pressure, but their domestic effects vary across economies depending on exposure to imported energy costs. This study examines whether energy dependence systematically explains heterogeneous inflat...

Ultrafast laser direct welding of sapphire: interfacial microstructure, joining mechanism and optical performance optimization

Sapphire is critically important for ultraviolet photodetectors, high-temperature sensors and optical windows. Traditional brazing and diffusion bonding suffer from integral heating, structural deformation and optical performance degradation. In this work, an innovative interlaye...

Strengthening the BZCYYb electrolyte/cathode interface for protonic ceramic fuel cells via Ni doping and in situ exsolution

A reliable electrolyte/electrode interface is crucial to the performance of protonic ceramic fuel cells (PCFCs), yet the poor sinterability of proton-conducting electrolytes and their limited interfacial bonding with cathodes remain challenging. This study proposes a synergistic...

Machine learning prediction of chloride convection-zone depth in marine tidal concrete with model explainability and experimental validation

Reliable prediction of chloride convection-zone depth is important for service-life assessment of tidal-zone concrete, but most data-driven chloride studies focus on surface concentration or diffusion-related indicators. This study proposes a data-driven prediction and explainabi...

Land-cover classification stability tracks divergent productivity and water-use-efficiency trajectories across boreal woody vegetation in the Daxing’anling Mountains

Annual land-cover labels are often treated as fixed ecological classes, yet boreal pixels near canopy-cover thresholds may repeatedly alternate between forest and woody-savanna categories. We tested whether classification persistence identifies distinct long-term carbon–water tra...

Triggering high-energy orbits in rotational nonlinear energy harvesters via time-varying external excitation and internal parameter modulation

The nonlinear dynamics of rotational piezoelectric energy harvesters can enhance power output and broaden the operational bandwidth. However, their practical application is severely constrained by uncontrollable switching between the high-energy orbit (HEO) and low-energy orbit (...