Beijing University of Technology

Single‐Photon Emitters in β‐Ga 2 O 3 at Distinct Excitation Energies: Defect Origin and Photophysical Properties

ABSTRACT Room‐temperature single‐photon emission in beta‐phase gallium oxide (β‐Ga 2 O 3 ) extends the application scope of this ultra‐wide bandgap semiconductor beyond power electronics, opening up the possibility of using it as a quantum light source platform. However, the rich...

Flexural behavior and debonding mechanism of RC beams strengthened with FRP mini-bars embedded in geopolymer matrix

Carbon fiber-reinforced polymer (CFRP) offers an efficient strengthening solution, however, pursuing higher load capacities via high reinforcement ratios triggers premature interfacial debonding. Basalt FRP (BFRP) serves as a cost-effective alternative, inherently alleviating int...

Hierarchical Assembly of Sub‐2 nm Amorphous Nanobelt Membranes for Oil–Water Separation via Pore Engineering

ABSTRACT The trade‐off between flux and selectivity in oil–water separation membrane fundamentally originates from a structural incompatibility between interconnected transport pathways and densely distributed interfacial active sites. Herein, we construct a free‐standing membran...

Spin-State Engineering in Ni-Doped Co3O4 Hollow Prisms for Enhanced Toluene Oxidation

Abstract Although the spin state of active centers is crucial to catalytic activity, its role in VOC deep oxidation remains unclear. Here, we report a spin-state engineering strategy to construct Ni-doped Co3O4 hollow prisms (Ni-Co3O4-HP) via sacrificial-template etching. The mes...

Polarity Reversal of Dipole at the SiO2/HZO Interface in Ferroelectric Field-Effect Transistors by Oxygen Scavenging of TiN

Abstract Doped HfO2-based ferroelectric field-effect transistors (FeFETs) have attracted considerable attention for their potential in nonvolatile memory applications. Research on the dipole at the SiO2/HfO2-based ferroelectric interface is scarce. This study finds that the polar...

Helicity conservation of the Riemann–Silberstein vector

Abstract In this paper, we consider Riemann–Silberstein (RS) helicity (RSH) given by the sum of the electric and magnetic helicities. We show that this quantity is chiral under parity transformation and invariant under duality. In the case of null fields in free space, we prove t...

Managing solar transmittance and long-wave infrared emissivity in dual-channel smart windows

Most smart windows regulate solar transmittance but overlook long-wave infrared (LWIR) radiative exchange, limiting year-round thermal regulation. This Review discusses dual-channel smart windows that dynamically tune both solar transmission and LWIR emissivity, including atmosph...

Molecular Riveting Stabilizes Wide‐Bandgap Perovskites by Reinforcing Cation‐Octahedron Coupling

ABSTRACT High‐quality wide‐bandgap (WBG) perovskites are essential top‐cell absorbers for perovskite/silicon tandem cells, yet their stability is limited by light‐induced halide phase segregation and defect evolution. Here, we report a molecular riveting strategy that reinforces...

Freeze–Thaw Characteristics of Pb(II)-Contaminated Soil Stabilized Using NaOH- and Na 2 SiO 3 -Activated Geopolymer

Abstract Lead [Pb(II)] contamination poses a significant environmental concern due to its detrimental effects on soil physicochemical (i.e., physical and chemical) properties and structural stability. This issue is further exacerbated by freeze–thaw (F-T) cycles, which accelerate...

Corrosion Resistance of Sn-58Bi and Sn-65.7Bi-2.3Sb Low-Melting Alloys in Simulated Geological CO2 Sequestration Environments

Abstract This study investigates the temperature-dependent corrosion of bismuth-based low-melting alloys (Sn-58Bi and Sn-65.7Bi-2.3Sb) in simulated geological CO2 storage environments. Experiments were conducted in a high-pressure autoclave, with post-corrosion analysis including...

From Molecular Designs to Nanomaterials for Electrochemical PFAS Detection: A Review

Abstract The pervasive occurrence of per- and polyfluoroalkyl substances (PFAS) and the implementation of stringent regulatory guidelines necessitate rapid, highly sensitive analytical methodologies. Although liquid chromatography-tandem mass spectrometry (LC-MS/MS) remains the g...

Anomaly Detection in Long-term Time Series with Transformer and Variational Autoencoder

Abstract Anomaly detection is crucial for ensuring system reliability and providing early warnings of potential failures. However, long-term time-series anomaly detection remains challenging because anomalous events are rare, anomaly patterns are diverse, and temporal dependencie...

Beyond resistance: an integrated psychological organizational model of employee response to digital transformation

Organizational competitiveness increasingly depends on successful digital transformation, yet employee resistance remains a critical barrier. This study develops an integrated framework grounded in Innovation Resistance Theory and Social Cognitive Theory to investigate key driver...

Information-Bottlenecked Variational Autoencoder for Top- N Recommendation via Gating Mechanism

Generative models for top- \(N\) recommendation have garnered significant attention, with Variational Autoencoder (VAE) emerging as a promising approach for modeling user preferences. Yet, traditional VAE-based models encounter two major challenges: simplistic priors may cause po...

UAV-Based Transmission Tower Inspection Using Hierarchical Multitask Learning Under Heterogeneous Supervision

Unmanned aerial vehicle (UAV) inspection of transmission towers requires joint analysis of corridor geometry, tower components, and localized defects, whereas available datasets provide incompatible annotations at different scales. Tower-HMT is a hierarchical multitask network th...

Damage-Quantified Reusability Evaluation of Reusable Launch Vehicle Avionics: A Framework Integrating Physics-of-Failure Modeling with Multi-Criteria Decision Making

Reusable launch vehicles (RLVs) subject avionics electronics to repeated vibration, shock, and thermal cycling, yet no standardized method exists to evaluate reusability at the device level. We integrate physics-of-failure models—Steinberg vibration fatigue, Engelmaier/Coffin–Man...

Dispersion Equations of Scholte Waves for Inclined Multi-layered Seabed

Abstract Scholte waves are surface waves that propagate along a fluid-solid interface and arise from the interference of P- and SV-waves. The conventional dispersion equations for surface waves are typically derived under the assumption of horizontal interfaces, and cannot be app...

Mechanism of Soil-Pipe-Water Coupling Effects in Liquefied Site Based on the Dynamic Response Characteristics of Pressurized Pipes

Acceleration.csv contains the acceleration time-history curves at measurement points A2, A3, and A4 under the El Centro earthquake wave and the Kobe earthquake wave with a peak ground acceleration (PGA) of 0.1 g. Pore water pressure.csv contains the pore water pressure time-histo...

Designing Tendon and Reinforcement Configurations for Punching and Postpunching Performance Demands of Posttensioned Concrete Flat Plate Slab–Column Joints

Abstract The punching shear and postpunching strengths of slab–column joints (SCJs) are the critical indicators of the resistance of posttensioned concrete flat plate structures to progressive collapse. These two capacities, however, are governed by distinct failure mechanisms an...

A Frequency-Domain Method for Determining Joint Stiffness in a Rock Mass Using Stress Wave Response

Abstract Accurate determination of joint stiffness is crucial for evaluating the deformation and stability of rock mass in geotechnical engineering. This study proposes a novel method for determining joint stiffness by analyzing the frequency characteristics of the stress wave. P...