Tianjin University

Gain-switched all-fiber 3.5 μm laser with high pulse energy

We report the demonstration of an all-fiber pulsed laser at 3.5 μm based on gain-switching scheme. The cavity, formed by splicing two fiber Bragg gratings to a piece of Er-doped fluoride fiber, is dual-wavelength pumped by a pulsed 2 μm fiber laser and a continuous-wave 0.98 μm l...

Probing Internal Dynamics of Spatiotemporal Optical Vortex Strings: Spatiotemporal Attraction and Filament Stretching

ABSTRACT Vortex dynamics are intriguing and challenging across multiple physics fields. In optics, customized spatiotemporally structured optical fields, especially spatiotemporal optical vortices (STOV), offer the potential to tailor light via coupled space‐time degrees of freed...

Multi-objective optimization of gradient porosity gas diffusion layer of PEMFC with metal foam flow fields by LBM and AI-MOO

A gas diffusion layer (GDL) with a porosity gradient has been widely recognized as an effective approach to enhancing the performance of proton exchange membrane fuel cells (PEMFCs). However, research on gradient porosity GDL structures for PEMFCs with metal foam flow field (MFFF...

Solubility Behavior of Baloxavir Marboxil in 13 Pure Solvents: Combined Experimental Measurement and Molecular Simulation Analysis

Abstract This study was designed to determine the solubility of Baloxavir marboxil (BXM) in 13 solvents (i.e., water, methanol, ethanol, n-propanol, i-propanol, i-butanol, s-butanol, n-pentanol, i-pentanol, acetone, ethyl formate, ethyl acetate, pentyl acetate) by high-performanc...

Real-time spectral signal processing for robust thickness monitoring during wafer thinning

Wafer thinning, as a key step in 3D integration using through-silicon via (TSV), highly relies on precise in-situ thickness monitoring to control accurate endpoint and avoid overgrinding or undergrinding. For ultra-thin wafers, conventional contact-based techniques become increas...

Production prediction of shale gas reservoirs during CO2 huff-and-puff based on inflow performance relationship curves

China is endowed with abundant shale gas resources and considerable development potential; however, shale gas production frequently declines rapidly after the initial development stage. CO 2 huff-and-puff has emerged as a promising technique for enhancing shale gas recovery. To a...

LiCoO 2 /LiMn 0.6 Fe 0.4 PO 4 Composite Cathode with Enhanced Interfacial Structure Enables Long‐Life Lithium‐Ion Batteries

ABSTRACT Extending the cycle life of LiCoO 2 (LCO) cathodes under elevated cutoff voltages remains a critical challenge for lithium‐ion batteries, as accelerated degradation is often governed by reaction heterogeneity and interfacial instability. Herein, we report a composite cat...

Mechanism and Origins of Enantioselectivity of Rhodium‐Catalyzed [4+3] Annulation of Benzosilacyclobutenes with 7‐Oxabenzonorbornadienes

ABSTRACT Rhodium‐catalyzed asymmetric [4+3] annulation of benzosilacyclobutenes with 7‐oxabenzonorbornadienes provides an efficient route to enantioenriched seven‐membered sila‐heterocycles. In this study, density functional theory calculations were performed to elucidate the rea...

Comparative Efficacy of Bone Defect Filler Strategies Following Lesion Debridement for Osteonecrosis of the Femoral Head: A Systematic Review and Network Meta‐Analysis

ABSTRACT Objective This study aimed to systematically review and compare the clinical and radiographic outcomes of different bone defect filler materials following lesion debridement for osteonecrosis of the femoral head (ONFH). Existing evidence on filler materials relies heavil...

Delocalized Electronic Buffering at Pd/High-Entropy Oxide Interfaces Enables Water-Tolerant Methane Oxidation

Abstract Developing Pd-based catalysts for methane oxidation that combine low-temperature activity with strong water tolerance remains a major challenge for emission control applications. Herein, we introduce a high-entropy architecture into Co3O4-based spinel supports to regulat...

Research on cross-industry production based on system dynamics under major emergencies

Purpose This study aims to investigate how supply chain disruptions caused by major public emergencies, such as geopolitical conflicts, affect firm performance and examines whether cross-industry production (CIP) can mitigate losses by repurposing capacity to produce contingency...

Energy storage for a flexible and decarbonized power system in China: Pathways and regional deployment

The power system transition is central to achieving China's dual‑carbon targets of carbon peaking by 2030 and carbon neutrality by 2060. The rapid expansion of variable renewable energy (VRE) has made pumped hydro storage (PHS) and battery energy storage systems (BESS) critical f...

Identification and compensation of geometric parameter errors for Non-Orthogonal shafting laser coordinate measuring instrument

With the deepening research in the field of large-scale coordinate measurement, non-orthogonal shafting 3D laser coordinate measuring instruments provide new possibilities for high-precision measurement in complex scenarios due to their advantages such as compact structure and st...

Association between low-level geometric features of central gaze-guiding patterns and SSVEP responses in mixed reality head-mounted display environments

This study investigated the correlation between the low-order geometric properties of centrally fixated guide patterns and steady-state visual evoked potential (SSVEP) responses in a mixed reality (MR) head-mounted display environment. An MR-SSVEP experimental environment was est...

N-Terminal Basic Helix and S120 Phosphorylation Cooperatively Regulate Nuclear Localization of UBE2A/B in Mechanotransduction

Cells are continuously exposed to mechanical stimuli arising from the extracellular matrix, neighboring cells, and tissue architecture. Through mechanotransduction, these physical cues are converted into intracellular signaling events that regulate cellular behavior and fate. In...

Modal degeneracy and oblique bending modes in ultra-long cable-strut deployable space masts

With the increasing application of large-scale ultra-long space deployable structures in aerospace engineering, low-order modal degeneracy and the resulting oblique bending modes have become critical issues affecting structural dynamic performance and on-orbit stability. This pap...

Synthesis of a Stable Crystalline Dibenzopentacene Triplet Diradical via a Protection–Oxidation–Protection Strategy

ABSTRACT The synthesis of triplet‐ground‐state 1,14:11,12‐dibenzopentacene (DP) has been sought after for over 60 years, but the isolation of stable derivatives in crystalline form has been unsuccessful. Herein, we report the synthesis and first single‐crystal isolation of a stab...

Synthesis of a Stable Crystalline Dibenzopentacene Triplet Diradical via a Protection–Oxidation–Protection Strategy

ABSTRACT The synthesis of triplet‐ground‐state 1,14:11,12‐dibenzopentacene (DP) has been sought after for over 60 years, but the isolation of stable derivatives in crystalline form has been unsuccessful. Herein, we report the synthesis and first single‐crystal isolation of a stab...

Investor heterogeneity and stock market volatility: cross-country evidence from an extended heterogeneous agent model

We study how investor heterogeneity relates to stock-market volatility in a cross-country setting using an extended fundamentalist–chartist heterogeneous agent model (HAM). We propose a time-varying heterogeneity intensity measure that combines belief differentials with endogenou...

Bisphenol A and Its Substitutes Bisphenol S/Bisphenol F in Combined Exposure Collectively Exacerbate Hepatotoxicity by Triggering Oxidative Stress and Inflammatory Responses via the PI3K-Akt/NF-κB Axis

Abstract Bisphenol A (BPA) and its substitutes bisphenol S (BPS) and bisphenol F (BPF) are environmental endocrine-disrupting chemicals that frequently co-occur. However, the hepatotoxic effects and underlying mechanisms of their combined exposure remain unclear. This study integ...