Guoqiang Liu

Local composition distribution of the zeotropic mixture in heat exchangers of auto-cascade refrigeration system: numerical modeling and experimental validation

Yinlong Li, Wang Xu, Yan Gang, Jiaheng Chen et autres

Auto-cascade refrigeration systems achieve a low temperature by utilizing the composition separation and temperature glide of zeotropic mixture refrigerant. At vapor–liquid equilibrium, the vapor and liquid phases of zeotropic mixture differ in composition because the components have different volatilities. Meanwhile, the vapor …

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Strong metal-support interaction enabled robust hydrogen storage in magnesium hydride

Shuai Li, Fuying Wu, Kai Jia, Daifen Chen et autres

Magnesium hydride (MgH 2 ) serves as promising hydrogen carriers for hydrogen infrastructure, yet its strong Mg-H bond imposes considerable constraints on practical operation under mild temperatures. Herein, an interfacial engineering strategy based on strong metal-support interaction (SMSI) was implemented to modulate …

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Homo‐Crystalline Interfaces for Durable Thermoelectric Generation

Kaikai Pang, Ruoyu Wang, Zejian Dong, Qiang Zhang et autres

ABSTRACT Enhancing average dimensionless figure of merit ( ZT ) through segmentation is central to thermoelectric energy conversion, yet practical application is hindered by the kinetic and electrical instability of conventional soldered hetero‐interfaces. Herein, we introduce a seamless partitioning (SP) approach that …

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Exceptional Ductility in N‐Type Bi 2 Te 3 Enabled by Atomic‐Scale Coulomb Tailoring of the Van Der Waals Gap

Chuan-Dong Zhou, Qiang Zhang, Ruijie Li, Jianfeng Cai et autres

ABSTRACT Inorganic semiconductors underpin modern electronics but suffer from their intrinsic brittleness that constrains functional applications. Here, we demonstrate a plasticity engineering strategy for layered semiconductor Bismuth Telluride via atomic‐scale Coulomb tailoring. By establishing long‐range interlayer Coulomb attraction through strategic doping in …

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Low‐Temperature Diffusion Welding Enables Phase‐Stable Interconnect Design for Bi 2 Te 3 ‐Based Thermoelectric Generators

Liya Miao, Qiang Zhang, Li Kong, Ruijie Li et autres

ABSTRACT The long‐term operation of Bi 2 Te 3 ‐based thermoelectric generators at elevated temperatures (500∼550 K) is limited by the lack of stable interconnect materials. Although substantial progress has been achieved in thermoelectric legs and diffusion barrier layers, welding layers remain …

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High‐Efficiency and Stable Step‐Graded PbTe Thermoelectric Module Achieved by a Synergistic Strategy of Thermal Matching and Diffusion Bonding

C. M. Han, Yinghua Chai, Jianfeng Cai, Zongwei Zhang et autres

ABSTRACT PbTe‐based thermoelectric modules for mid‐temperature waste‐heat recovery are often limited by the performance decay of n ‐type materials across a wide temperature range. Here, we develop a step‐graded n ‐type PbTe leg by diffusion‐bonding two compositionally distinct segments into a seamless …

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Phosphorus-driven electronic modulation on CoP/Co@NC heterostructures for highly efficient and stable hydrogen production in NaBH4 hydrolysis

Kai Jia, Yuhui Qian, Suning Li, Fuying Wu et autres

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A moving wave probe reveals a friction kernel hidden by phase averaging in turbulence

Guoqiang Liu, Maryam Alshehhi

Coarse-graining routinely discards fluctuations whose one-time mean vanishes, yet irreversible transport is controlled by two-time correlations. Here we introduce a moving-probe protocol that detects transport channels hidden by this discard operation. A prescribed wave-like carrier isolates a chosen bilinear coupling in a …

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Author response for "Interfacial Stress Limits PbTe Module Reliability: Porous Fe Foam Mitigates Thermal-Mismatch Stress"

Zhoumin Jiang, Xiaojian Tan, Zongwei Zhang, Ailong Yang et autres

Stable high-performance n-type PbTe enabled by lattice engineering for robust thermoelectric modules

Lulu Chen, Jianfeng Cai, Zongwei Zhang, Minhui Yuan et autres

P-type PbTe is one of the most representative high-performance thermoelectric materials, while the conversion efficiency of the fabricated module is limited by the relatively low zT of n-type PbTe. Here, we report the optimization of Cu-doped n-type PbTe by tuning the ionic …

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Synergistic Optimization of n -Type PbTe via Resonant Level and Strain-Induced Phonon Scattering for High-Efficiency Thermoelectric Modules

jinqu feng, Yao Luo, Jianfeng Cai, Zongwei Zhang et autres

PbTe stands as a leading n -type thermoelectric material for midtemperature applications, yet its performance is limited by a single conduction valley and high lattice thermal conductivity. To address these constraints, we propose a combined strategy integrating resonant level engineering with dislocation …

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Novel Interface Resonance‐Enhanced Organic Photodetectors with High Stability and Detectivity for Health Monitoring

Guoqiang Liu, Jiaxin Luo, Congdi Xu, Kepian Miao et autres

Abstract Wearable organic photodetectors (OPDs) operating in the near‐infrared (NIR) are pivotal for non‐invasive photoplethysmography (PPG)‐based health diagnostics. Yet, their practical deployment is impeded by excessive dark current density ( J d ) and poor stability. Here, it is demonstrated that strategic …

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