Tsinghua University

Edge-Hydroxylated Boron Nitride Nanosheets for Simultaneous Improvement of Thermal and Mechanical Properties of Composite Films

Abstract With the rapid evolution of high-power electronics driven by advanced communication technologies and artificial intelligence, efficient thermal management has become a critical challenge. Hexagonal boron nitride (h-BN)/polymer composites, which integrate the flexibility...

Overcoming polarization-breakdown trade-off via hydrogen bonding-modulated molecular stacking in high-temperature high-energy-density flexible dielectric

Flexible dielectrics suffer from an inherent polarization-breakdown trade-off. Herein, we propose a hydrogen bonding-modulated molecular stacking strategy to improve high-temperature capacitive energy storage performance. A series of polyetherimide copolymers with tunable hydroge...

Predicting the continuity of international scientific collaboration in the BRICS: a machine learning approach

Purpose This study aims to predict respondent-reported continuity of international scientific collaboration within the BRICS through a supervised binary classification approach. It examines whether respondents reported that collaborations continued in the form of joint projects a...

Structural and functional insights into QueC-family protein in QatABCD anti-phage system

Abstract QatABCD is a widespread prokaryotic anti-phage defense system comprising four protein components, out of which QatC, a QueC-family protein is the signature component. QueC family proteins are nucleoside biosynthesis enzymes involved in the biosynthesis of queuosine, a 7-...

Validity of the twin-force analogy in Couette flows

This study combines linear stability analysis (LSA) and direct numerical simulations (DNS) to investigate the coupling mechanisms of rotation, stratification and shear in two flow geometries: spanwise rotating stratified plane Couette flow (between two infinite parallel plates) a...

Time-of-Use Pricing Enhances Vehicle-to-Grid Benefits for Power Systems and Vehicle Owners but May Undermine Decarbonization

Abstract Vehicle-to-grid (V2G) is an important flexibility management technology for lower-carbon transport and the electricity grid. However, its effectiveness relies on the temporal alignment between the price incentives and grid dynamics. To overcome the challenge of coordinat...

Mechanical Fault Diagnosis of High-Voltage Circuit Breakers Based on Multi-Sensor Gramian Angular Field and Deep Residual Network

The mechanical reliability of high-voltage circuit breakers (HVCBs) is crucial for power-grid stability, yet traditional diagnostic methods rely heavily on manually extracted scalar features that can discard transient information. This paper presents a mechanism-aware diagnostic...

Strengthening Mechanism of Cold-Sprayed Al6061 Protective Coating on LAZ931 Mg-Li Alloy

To address the key problems of dual-phase magnesium-lithium alloy LAZ931 such as easy corrosion, flammability and low strength, AA6061 protective coating was fabricated on LAZ931 alloy via cold spraying to form an Al6061/LAZ931/Al6061 sandwich structure. The strengthening mechani...

Learning in Lost-Sales Inventory Systems with Stochastic Lead Times and Random Supplies

Supply uncertainty, characterized by stochastic lead times and random supply quantities, has attracted increasing attention from academia, industries, and governments, particularly in the aftermath of the COVID-19 pandemic. In this paper, we consider the problem of managing lost-...

Stability assessment of masonry pagodas based on multi-temporal survey and material analysis

This study evaluates the condition and conservation effects of three Tang Dynasty masonry pagodas at Foguang Temple, Shanxi, through multi-temporal 3D laser scanning, material analysis, and micro-environmental monitoring. Four surveys (2011, 2020, 2024, and 2025) documented the p...

Low-Carbon Valorization of Waste PE Mulch Film: A Carbon Footprint Comparative Analysis of Typical End-of-Life Treatment Pathways

Widespread polyethylene (PE) mulch film application has caused severe farmland plastic pollution and greenhouse gas emissions. To identify low-carbon end-of-life pathways for waste agricultural mulch film, this study established a full life-cycle carbon footprint model comparing...

UPMA: unspecified pretraining and modular adaptation for context-aware target delineation in adaptive esophageal radiotherapy

Abstract Esophageal cancer, a serious malignancy, is primarily treated with radiotherapy (RT). Accurate delineation of gross tumor volume (GTV) and clinical target volume (CTV) is essential, yet manual contouring is time-consuming and automatic methods remain challenging. Adaptiv...

Value-Gradient Generalist Design of Muscle–Tendon Parameters for Cross-Terrain Musculoskeletal Locomotion

Compliant muscle–tendon mechanics can improve terrain adaptation in musculoskeletal robots, but heterogeneous terrains impose competing requirements on compliance, propulsion, foot clearance, and support transfer. This paper proposes Value-Gradient Generalist Design (VGGD), a fra...

Effect of melt flow control via runner design on microstructure and defect formation in high-pressure die cast Al-Si alloy

This study investigates the influence of runner design on the formation of externally solidified crystals (ESCs), porosity and eutectic bands in a non-heat-treated high-pressure die cast (HPDC) AlSi9MnVZr alloy. Three runner configurations: simple runner, pinched runner and pinch...

Evaluation of the antibacterial activity of turkish gall extract against Staphylococcus aureus ATCC 6538

Abstract Background Staphylococcus aureus is a common foodborne pathogen and a frequent cause of clinical infections. It forms dense biofilms by adhering to surfaces of objects or the human body, thereby reducing the bactericidal efficacy of antibiotics and disinfectants. This st...

Scratching Lithography: In Situ Mechanical Exfoliation of van der Waals Materials for Direct‐Write Circuits

ABSTRACT Ever since the discovery of graphene via mechanical exfoliation of graphite, 2D nanomaterials have garnered wide interest for high‐performance electronics. Mechanical exfoliation of van der Waals (vdW) layered materials produces nearly perfect 2D nanomaterials, yet their...

Exploring baryon semileptonic decays through polarization and entanglement

Abstract The unitarity of the Cabibbo–Kobayashi–Maskawa (CKM) matrix is a cornerstone of the standard model (SM). Precise tests of this unitarity require independent determinations of its elements, such as | V us |, which governs the transition between strange and up quarks. Curr...

Association of socioeconomic status transition with arthritis: a life-course study

Childhood socioeconomic status (SES) and adulthood SES have independent effects on health outcomes. However, the varied effects of SES transition throughout the life course on arthritis remain underrecognized. This study aimed to investigate the association of SES transition with...

Reduced element for adaptive finite element analysis in maximum norm

Purpose This paper aims to propose a novel yet simple approach to the adaptive finite element (FE) analysis of two-dimensional boundary value problems (BVPs) in the maximum norm with local refinement of unstructured meshes based on the reduced element technique. Design/methodolog...

A Topology‐Reconfigurable Wireless Charging System for Electric Vehicles Enabling Wide‐Range and High‐Efficiency Output

ABSTRACT With an increasing number of electric vehicles (EVs) manufacturers deploying wireless power transfer (WPT) technology, the efficiency and adaptability of such systems have garnered growing attention. To address the challenge of maintaining high efficiency over a wide bat...