Beihang University

The New Type All‐Thin‐Film Electrochromic Devices: Separated‐Function Design for High‐Performance Intelligent VIS‐IR Multi‐Band Modulation

ABSTRACT Smart windows based on all‐thin‐film electrochromic devices (ECDs) with coordinated visible (VIS) and infrared (IR) modulation offer promising solutions for energy‐efficient buildings. However, conventional single‐layer ECDs often suffer from limited IR modulation, slugg...

Machine-learning-based model for predicting surface impedance of microslit panels in grazing flow

Accurately predicting the acoustic properties of noise-reduction materials in real-world, flow-exposed environments remains a significant challenge in engineering. Classical models of microslit panels are unsuited for grazing flow conditions due to complex, nonlinear flow-acousti...

Ambient‐Processed Organic Solar Cells Achieving Nearly 20.5% Efficiency and Industrially Viable Environmental Stability

The ability to process organic solar cells (OSCs) in ambient air is a critical prerequisite for industrial-scale production, as it obviates the need for a high-cost inert atmosphere. However, state-of-the-art cathode interlayers (CILs) typically require strongly hydrophilic group...

Kelvin–Helmholtz vortices at the magnetopause during northward IMF: multi-satellite observations of energy transport and plasma redistribution

The Kelvin–Helmholtz (KH) instability is a fundamental plasma process in many astrophysical environments; its vortices facilitate solar wind energy transport and plasma mixing. We investigate the energy flux density distribution and fluctuations of a typical KH vortex event obser...

MXene-Induced Adsorption of Transition Metals Stabilizes Lithium-Rich Manganese Cathodes against Voltage and Capacity Decay

Abstract Lithium-rich manganese-based materials (LRMO) have emerged as ideal cathode materials for high-energy-density lithium-ion batteries due to their high capacity (>250 mAh/g) and low cost. However, the continuous migration and dissolution of transition metal ions (TM...

Optimizing coronary CT angiography in patients with delayed contrast arrival using a free-breathing, high-threshold bolus-tracking protocol

OBJECTIVE: To investigate the performance of a free-breathing coronary computed tomography angiography (CCTA) protocol using a high-threshold bolus-tracking strategy in improving coronary enhancement and diagnostic visualization in patients with delayed contrast arrival. MATERIAL...

Confusing and Challenging Negative Proposals Mining for Few-Shot SAR Ship Detection Based on Uncertainty Estimation

Deep-learning-based few-shot synthetic aperture radar (SAR) ship detection has demonstrated considerable potential in scenarios with limited annotated samples and dynamically emerging ship categories, closely matching the practical requirements of maritime surveillance and intell...

Encountered-Type 3D Haptic Shape Display by Simulating Finger–Object Contact Regions

Encountered-type pin-array shape displays allow users to freely explore a simulated shape using bare fingers. However, current pin-array shape displays are limited to discontinuous shapes or 2.5D shapes. Here, we propose a novel shape display principle to render touch feedback be...

Exploring the Synergetic and Divergent Potentials of Multimodal Semantics for Feature Fusion-based Video Recommendation

Traditional multimodal video recommendation systems typically focus on semantic synergy across modalities (e.g., text, image, video) by employing attention mechanisms to weight and aggregate features, while overlooking the potential benefits of semantic divergence among modalitie...

Multimodal synthesis of neural correlates of motor imagery after spinal cord injury: a systematic review

Spinal cord injury (SCI) profoundly disrupts motor output while also reshaping central motor systems. Motor imagery (MI) provides a valuable window into retained motor-related neural processes because it enables investigation of covert motor state generation in the absence of ove...

Co-optimization of storage service scheduling and bidding strategies for community-shared energy storage: a distributionally robust bi-level model

The co-optimization of market participation and user-side service provision is key to ensuring the effective operation of community-shared energy storage systems. In fulfilling this dual role, while user-side storage consumes finite resources, it introduces critical flexibility f...

Isomer Effect of Double-Spiro Mechanophores in Polymer Mechanochemistry

Abstract Easy construction of rhodamine spiro rings and diversity of naphthalenediol enable various isomers of the naphthalene-fused double rhodamine structure and provide the possibility to study the structure–performance relationship of double-spiro mechanophores. Herein, we fo...

Diffusion-Based Trajectory Restoration for Aerial Vehicle Tracking in Ground-to-Air Remote Sensing Systems

Continuous trajectory maintenance is important for aerial vehicle monitoring, threat assessment, and warning or interception decisions in ground-to-air remote sensing systems. In the considered system, radar and radio-frequency (RF) sensing are used together to produce fused aeri...

Integrated All-Graphene Flexible Strain Sensors viaProgrammable Laser-Induced Conductivity Optimization for WearableMotion Monitoring

Abstract Flexible strain sensors are essential components in wearable electronics and soft robotic systems, yet their reliability is often compromised by the mechanical mismatch and interfacial instability inherent in heterogeneous material integration. Herein, we present an inte...

Biomimetic Self-AdhesiveArtificial Periosteum withMicro/Nanofibrous Structure Accelerates Bone Reconstruction via SynergisticOsteogenesis and Angiogenesis

Abstract Critical-sized bone defects remain a major clinical challenge, and the periosteum, comprising a highly vascularized outer fibrous layer and an osteogenic inner layer, is crucial for bone repair. Herein, a biomimetic bilayer artificial periosteum (CP-HP) was developed, co...

Inter‐Set Blood‐Flow Restriction Increases Peripheral Physiological Stress While Preserving Repeated‐Sprint Mechanical Output in Trained Athletes

ABSTRACT Inter‐set blood‐flow restriction (BFR) may increase the physiological stimulus of repeated‐sprint exercise without compromising mechanical output, but evidence in trained athletes is limited. In a randomized crossover design, 26 national‐level male badminton players comp...

High temperature performance of multilayer (Gd0.2Dy0.2Ho0.2Tm0.2Yb0.2)4Hf3O12 thermal/environmental barrier coatings at 1450°C.

A novel thermal/environmental barrier coating (T/EBC) composed of a Si-15 mol% HfO 2 bond coat, a Yb 2 SiO 5 -50mol% Yb 2 Si 2 O 7 intermediate layer, and a (Gd 0.2 Dy 0.2 Ho 0.2 Tm 0.2 Yb 0.2 ) 4 Hf 3 O 12 (15SH/50YbMDS/(5RE) 4 Hf 3 O 12 ) top layer was fabricated by air plasma...

Magnetic Insights Into Heterogeneous and Nonequilibrium Electrochemical Reactions

ABSTRACT Electrochemical energy systems are governed by interfacial reactions that are spatially heterogeneous and far from equilibrium, causing deviations from ideal behavior and unexpected phenomena. Despite significant advances, conventional characterization techniques remain...

Electrical control of exchange bias in sub-10 nm regime enabled by single-nanotube patterning

Achieving stable magnetization in sub-10 nm ferromagnetic layers represents a fundamental bottleneck in spin-orbit torque magnetic random-access memory development. While exchange bias potentially offers stabilization at such scales through antiferromagnetic coupling, conventiona...

Deep Reinforcement Learning-Guided Design of Broadband Electromagnetic Wave Absorbing Coatings

Abstract Artificial intelligence-assisted design of electromagnetic wave absorbing coatings is often restricted to geometry or topology optimization within fixed materials. Here, we present a modular particle swarm optimization−proximal policy optimization (PSO−PPO) framework for...