A5072966215- Advanced Thermoelectric Materials and Devices
- Heusler alloys: electronic and magnetic properties
- Physics of Superconductivity and Magnetism
- Chalcogenide Semiconductor Thin Films
- Advanced Thermodynamics and Statistical Mechanics
- Magneto-Optical Properties and Applications
- Advanced Photocatalysis Techniques
- Machine Learning in Materials Science
- 2D Materials and Applications
- Magnetic properties of thin films
- Ga2O3 and related materials
- Magnetic and transport properties of perovskites and related materials
- Quantum and electron transport phenomena
- Nutrition and Health in Aging
- Engineering Applied Research
- Body Composition Measurement Techniques
- Semiconductor Quantum Structures and Devices
- Advancements in Semiconductor Devices and Circuit Design
- Topological Materials and Phenomena
- Surface and Thin Film Phenomena
- Advanced Memory and Neural Computing
- Thermodynamic and Structural Properties of Metals and Alloys
- Power Transformer Diagnostics and Insulation
- Magnetic Properties of Alloys
- Thermal properties of materials
First Affiliated Hospital of Nanchang University
2024
Nanchang University
2024
The Ohio State University
2016-2019
Tsinghua University
2005-2015
State Key Laboratory of New Ceramics and Fine Processing
2014-2015
Beijing University of Chemical Technology
2015
University of Science and Technology Beijing
2015
China Institute of Atomic Energy
2011
In this work, we demonstrate a high mobility two-dimensional electron gas (2DEG) formed at the β-(AlxGa1-x)2O3/Ga2O3 interface through modulation doping. Shubnikov-de Haas (SdH) oscillations were observed in modulation-doped structure, indicating high-quality channel heterojunction interface. The formation of 2DEG was further confirmed by weak temperature dependence carrier density, and peak low found to be 2790 cm2/Vs, which is significantly higher than that achieved bulk-doped Beta-phase...
Magnon drag is shown to dominate the thermopower of elemental Fe from 2 80 K and Co 150 600 K; it also contribute Ni 50 500 K. Two theoretical models are presented for magnon-drag thermopower. One a hydrodynamic theory based purely on nonrelativistic, Galilean, spin-preserving electron-magnon scattering. The second spin-motive forces, where results electric current pumped by dynamic magnetization associated with magnon heat flux. In spite their very different microscopic origins, two give...
Neutrons spot magnetic fluctuations that propel charges in a novel class of paramagnetic thermoelectrics.
Bi1−xLaxCuSeO ceramic bulks have been prepared by the spark plasma sintering method. Our results indicate that La-doping can lead to an obvious change of band structure evidenced absorption spectra and electric transportation behaviors (e.g., m* Seebeck coefficient). The variation in a great enhancement carrier mobility caused decreased energy offset between primary secondary valence bands. A maximum ZT value 0.74 be obtained 8% La-doped BiCuSeO sample at 923 K, which is 37% higher than pure...
Magnetic materials in which thermal transport involves the generation of spin fluxes provide new opportunities to improve thermal-to-electric energy conversion efficiency over that conventional, electron-based thermoelectrics. This review outlines basic concept for by both magnons and spin-polarized electrons. It begins outlining fundamentals transport, highlights thermopower electrons is proportional relative derivative their transmission function (the Mott relation), where specific heat...
The Nernst thermopower usually is considered far too weak in most metals for waste heat recovery. However, its transverse orientation gives it an advantage over the Seebeck effect on non-flat surfaces. Here, we experimentally demonstrate scalable generation of a voltage air-cooled metal wire coiled around hot cylinder. In this geometry, radial temperature gradient generates azimuthal electric field coil. A Galfenol (Fe$_{0.85}$Ga$_{0.15}$) wrapped cartridge heater, and drop across measured...
This article reviews the factors limiting figure of merit <i>zT</i> conventional thermoelectrics especially at cryogenic temperatures and then highlights modern approaches used to increase below 200 K. Two type materials are discussed. The first BiSb alloys, relatively in which is enhanced by using resonant levels. second spin- Seebeck effect (SSE), a new solid-state energy conversion technology. Classical thermoelectric SSE physics combined provide concepts, like magnon-drag, we hope...
We report here a systematic study of the magnon-drag induced thermoelectric properties Fe-rich, Fe-Co body-centered-cubic alloys. The sign low temperature behavior thermopower is explained well by hydrodynamic theory for magnon-drag, informed density functional calculations ground state high-temperature some alloys, and indeed that elemental iron, changes sign, as previously observed. propose mechanism to elucidate this hitherto unexplained observation. Further, power factor Fe72Co28 peaks...
Aim The diagnosis of sarcopenia in patients on peritoneal dialysis (PD) clinics is limited owing to its relatively complicated process and the need for expensive assessment equipment. This study aimed develop validate sex-specific nomogram models based body mass index (BMI), handgrip strength, other routine follow-up examination indicators predict PD. Methods From March 2023 February 2024, 699 eligible were recruited from PD centers two tertiary hospitals southeastern China. Routine such as...
Spintronic, spin caloritronic, and magnonic phenomena arise from complex interactions between charge, spin, structural degrees of freedom that are challenging to model even more difficult predict. This situation is compounded by the relative scarcity magnetically-ordered materials with relevant functionality, leaving field strongly constrained work a handful well-studied systems do not encompass full phase space phenomenology predicted fundamental theory. Here we present an important advance...
Beta-phase Ga2O3 has emerged as a promising candidate for wide range of device applications, including power electronic devices, radio-frequency devices and solar-blind photodetectors. The bandgap energy the predicted high breakdown field, together with availability low-cost native substrates, make \b{eta}-Ga2O3 material compared to other conventional materials, such GaN SiC. Alloying Al could enable even larger band gap provide more flexibility optoelectronic design. In this work, we...