Beihang University

Transient Regulation of Crystallization via Volatile Additives to Obtain High‐Quality Perovskite Films

ABSTRACT Exact regulation of nucleation and crystallization kinetics is essential for fabricating high‐performance perovskite solar cells (PSCs). However, regulating the fast assembly of precursors without incorporating residual impurities presents a significant difficulty. We pr...

Odometry and Mapping for Complex Environment Perception Under Partial-View Sensing

Dense partial-view LiDAR observations are attractive for outdoor perception, but limited overlap and viewpoint sensitivity make odometry and mapping less reliable than with spinning LiDARs. Many recent algorithms for this sensing regime are built as LiDAR-inertial odometry framew...

Flexible Osmotic Energy Batteries Enabled by Stacked Bicontinuous‐Network Hydrogels

ABSTRACT Reverse dialysis based on hydrogel membranes holds promise for the development of soft electrochemical batteries. However, the energy conversion efficiency is often constrained by excessive swelling, which dilates nanochannels and degrades permselectivity. Here, we prese...

Commodity WiFi Can Capture Your Respiration Even the Motion Interference Exists

As one widely used wireless technique, WiFi has the potential to perform non-contact monitoring of respiration. While pioneering works have demonstrated promising performance, they inevitably ignore the impact of pervasive motion interference caused by non-target body areas or ne...

Misaligning Cascaded Liquid Crystal Elements for Continuously Tunable Axial Spin‐Dependent Splitting

ABSTRACT Achieving continuous tunability and spin‐multiplexed functionality is essential for depth‐resolved imaging, yet existing approaches suffer from fixed focal lengths, transverse‐plane splitting, or inability to acquire two depth planes simultaneously. Here, we propose and...

High‐Temperature Alloys in Aeroengines: Damage and Fracture Insights From Micromechanical Modeling

ABSTRACT High‐temperature alloys are the cornerstone of aeroengine hot‐section components, where extreme thermomechanical conditions give rise to intricate damage and fracture behaviors that critically limit the structural integrity of whole aeroengines. Generally, Ni‐based super...

Perceived overqualification and work-family conflict: examining work-family centrality as a moderator

The relationship between perceived overqualification and work-family conflict (WFC) is unclear. We argue that the extent to which it is either positive or negative depends on work-family centrality. Overqualified employees who prioritize work more than their families will apprais...

Quality and measurement approach of railway track geometry: a review

Purpose This article aims to systematically review the state-of-the-art approaches for railway track geometry quality measurement and assessment. It identifies and compares available measurement platforms, classifies existing track quality indices (TQIs), and highlights current l...

Unveiling the nexus between products and influential countries in the multi-layer trade network of global lithium battery

Amid the accelerating global transition to renewable energy and the surge in electric vehicle adoption, ensuring the stability of the lithium battery supply chain has become a critical priority. This study explores the complex relationships between products and influential countr...

Multi‐Model Lifetime Prediction of Silicone Rubber Under Coupled Environmental Stressors Based on Accelerated Testing in Simulated Marine Atmospheric Conditions

ABSTRACT Marine equipment operating in atmospheric marine environments is subjected to multiple interacting stressors, making the durability of silicone‐rubber sealing components and their lifetime prediction both critical and difficult to assess. This study investigates the degr...

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...

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...

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...

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...

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...

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...

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...

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...