A5100622559- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Magnetic and transport properties of perovskites and related materials
- Superconductivity in MgB2 and Alloys
- HVDC Systems and Fault Protection
- Quantum and electron transport phenomena
- Electronic and Structural Properties of Oxides
- Geophysical and Geoelectrical Methods
- Advanced Condensed Matter Physics
- ZnO doping and properties
- Atomic and Subatomic Physics Research
- Hydrocarbon exploration and reservoir analysis
- Quantum, superfluid, helium dynamics
- Magnetic Properties and Applications
- Metallurgy and Material Forming
- Magnetic confinement fusion research
- Solidification and crystal growth phenomena
- Innovation Policy and R&D
- Earthquake Detection and Analysis
- Enhanced Oil Recovery Techniques
- Advanced Photocatalysis Techniques
- Advancements in Semiconductor Devices and Circuit Design
- Non-Invasive Vital Sign Monitoring
- Advanced oxidation water treatment
- Advanced Data Storage Technologies
Princeton Plasma Physics Laboratory
2023-2025
Manufacturing Institute
2019-2025
University of Houston
2019-2025
Tsinghua University
2014-2024
China University of Petroleum, Beijing
2021
Tianjin Hi-Tech Superconducting Electronic Technology (China)
2017-2019
The nonuniform superconducting current distribution in REBCO coated conductor, including a varying-field-induced screening current, is responsible for significant magnetization effect that not only degrades the field quality of magnets, but also introduces risks overstressing conductor. This paper presents our experimental and simulation studies on an 800-MHz (18.8-T) insert (H800) together with 500-MHz LTS NMR magnet (L500) constitutes MIT 1.3-GHz LTS/HTS (1.3G). To develop model, which...
We have developed and routinely used a reel-to-reel (R2R) scanning Hall-probe microscopy (SHPM) system to characterize REBCO conductors at the University of Houston. By mapping screening-current-induced field magnetized conductor, SHPM enables 2-dimensional imaging critical current density ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">J</i> <sub xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> ) distribution in contact-free,...
Abstract RE–Ba–Cu–O (REBCO, RE = rare earth) symmetric tape round (STAR ® ) wires of 1.5–2.5 mm diameter have been fabricated with 4–12 strands REBCO made by advanced metal organic chemical vapor deposition (MOCVD). 1.5 STAR just four MOCVD are able to sustain nearly the same critical current ( I c as 2.5 12 commercial-grade strands. An 1070 A, corresponding an engineering density J e 597 A −2 , has demonstrated at 4.2 K, 30 T in diameter, four-strand wire a bend radius 15 mm. This value...
High-temperature superconducting (HTS) magnets offer a promising solution for generating high magnetic fields efficiently and economically, serving as vital component in nextgeneration scientific instruments carbon-neutral power systems, notably cost-effective compact fusion reactors. These play pivotal role advancing research on quantum materials, particularly elucidating the intricate electronic states near phase transitions. This paper delves into conducted at Princeton Plasma Physics...
<bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">REBCO tapes have</b> an immense potential xmlns:xlink="http://www.w3.org/1999/xlink">in next-generation electric machines such as high-efficiency industrial motors,</b> high-power wind turbine generators, xmlns:xlink="http://www.w3.org/1999/xlink">and</b> aircraft xmlns:xlink="http://www.w3.org/1999/xlink">.</b> We have constructed a pilot-scale advanced metal organic chemical vapor deposition (...
The detection of extremely low magnetic fields has various applications in the area fundamental research, medical diagnosis, and industry. Extracting valuable signals from noises often requires shielding facilities. We demonstrated directly Maxwell's equations that specifically designed superconductor coils can exactly shield field to an value. experimentally confirmed this effect frequency spectrum 0.01–10 000 Hz improved electromagnetic environment a hospital, leading hospital...
Inductance is a very commonly used electrical parameter in transient progress analysis, as well energy storage evaluations. It was normally considered constant when the geometrical configuration of coil determined. However, experiments on Bi-2223 (Bi <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> Sr Ca Cu xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">10+x</sub> ) and YBCO (YBa...
In the past two years, a reel-to-reel (R2R) scanning hall probe microscope (SHPM) measurement system has been developed and routinely used at University of Houston for continuous 100% testing REBCO-coated conductors. The background magnetic field interference eliminated by introducing FFT into current density calculation. noise reduced factor 5 after customizing motor driver. Moreover, since data acquisition module upgraded to 100 kSPS sampling rate, resolution reached 0.06 mm <sup...
REBa2Cu3O7−δ (REBCO, RE = rare earth) tapes doped with 5% and 15% Zr have been scaled up to lengths more than 40 m in a pilot-scale advanced metal organic chemical vapor deposition (A-MOCVD) tool. The precursor compositions used for the long were guided by study of influence (Ba + dopant)/Cu content on critical current density (Jc) 5 15 mol.% Hf- Zr-added at 4.2 K 13 T. 40-m-long exhibited (Ic) over 4,000 A/12 mm T as well 1,400 20 densities tape measured National High Magnetic Field...
Abstract Current sharing between RE–Ba–Cu–O (REBCO, RE = rare earth) tapes within a high-temperature superconducting coil or cable is important to avoid damage from uncontrolled quench of devices operating at high currents. REBCO found be limited by the contact resistivity adjacent tapes, which about 20x higher in REBCO-facing-substrate (face-to-back) configuration that commonly used compared REBCO-facing-REBCO (face-to-face) configuration. Double-sided always offer face-to-face contacts and...
The magnetic circuit (MC) method has been developed to measure the critical current (I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> ) of long high temperature superconductor (HTS) tapes continuously since 2010. So far, with apparatus based on MC method, namely MCorder, industrial HTS produced by main manufactures worldwide have measured using including Bi2223/Ag multifilament and coated conductors with/without substrates. speed (360...
In this paper, the Ic degradation of bent YBCO tapes has been experimentally studied. The characteristics in length direction was measured through a non-contact, continuous measurement equipment (Mcorder), which is suitable for all kinds high temperature superconducting (HTS) tapes. detailed Jc mapping investigated by Hall microscopy (Mcorder 2-D), scans fields distribution on surface films or bulks. A 4.1-m-long tape wound 4.5-mm-diameter core with face outside inside. critical current...
We have reported the development of an Advanced Metal-Organic Chemical Vapor Deposition (A-MOCVD) method featuring ohmic heating substrate for REBCO film growth, direct tape temperature monitoring, and laminar precursor flow. This A-MOCVD has been used to fabricate 4-5 μm thick tapes with record-high performance: critical currents exceeding 8700 A/12 mm at 30 K, 3 T; engineering current density 5200 A/mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Until recently, a new type of open magnetic shielding system was realized by the combination series closed high temperature superconductor coils. We experimentally confirmed that factor (SF) can reach more than 40 dB in frequency spectrum 0.1-16 000 Hz. Because its superior ability to resist alternating field, we named, Tesla-shielding (TS), commemorate father current, Nikola Tesla. In this paper, will report design and realization Helmholtz coil-based TS. The TS has many advantages over...