A5030252526- High voltage insulation and dielectric phenomena
- Power Transformer Diagnostics and Insulation
- Nonlinear Partial Differential Equations
- Nanowire Synthesis and Applications
- Advancements in Semiconductor Devices and Circuit Design
- Semiconductor Quantum Structures and Devices
- Gas Sensing Nanomaterials and Sensors
- Nonlinear Differential Equations Analysis
- Advanced Mathematical Modeling in Engineering
- Plasma Diagnostics and Applications
- Lightning and Electromagnetic Phenomena
- High-Voltage Power Transmission Systems
- Electronic and Structural Properties of Oxides
- 2D Materials and Applications
- Spectral Theory in Mathematical Physics
- Graphene research and applications
- Plasma Applications and Diagnostics
- Semiconductor materials and devices
- Topological Materials and Phenomena
- Differential Equations and Boundary Problems
- Ga2O3 and related materials
- Advanced Mathematical Physics Problems
- Magnetic Properties and Applications
- Quantum chaos and dynamical systems
- Quantum and electron transport phenomena
China Southern Power Grid (China)
2016-2025
Soochow University
2024-2025
Nagaoka University
2025
Nagaoka University of Technology
2025
Jiangnan University
2024
Electric Power Research Institute
2020-2024
Institute of Semiconductors
2020-2024
Chinese Academy of Sciences
2020-2024
Shanghai Normal University
2024
Shandong University
2024
We report electron transport studies of a thin InAs-Al hybrid semiconductor-superconductor nanowire device using four-terminal design. Compared to previous works, thinner InAs (diameter less than 40 nm) is expected reach fewer sub-band regime. The design excludes electrode contact resistance, an unknown value which has inevitably affected previously reported conductance. Using tunneling spectroscopy, we find large zero-bias peaks (ZBPs) in differential conductance on the order $2e^2/h$....
Probing an isolated Majorana zero mode is predicted to reveal a tunneling conductance quantized at $2e^2/h$ temperature. Experimentally, zero-bias peak (ZBP) expected and its height should remain robust against relevant parameter tuning, forming plateau. Here, we report the observation of large ZBPs in thin InAs-Al hybrid nanowire device. The ZBP can stick close $2e^2/h$, mostly within $5\%$ tolerance, by sweeping gate voltages magnetic field. We further map out phase diagram identify two...
In this paper, we consider the following system ofpseudo-differential nonlinear equations in $R^n$\begin{equation}\left\{\begin{array}{ll}(-\Delta)^{\alpha/2} u_i (x)= f_i( u_1(x), \cdots u_m(x)), & i=1, \cdots, m, \\u_i \geq 0 ,   (1)\end{array}\right.\label{b1}\end{equation}where $\alpha$ is any real number between $0$ and $2$. We obtain radial symmetry critical case non-existencein subcritical for positive solutions. To end, first establish equivalence (1)and corresponding integral...
Hybrid semiconductor-superconductor InAs-Al nanowires with uniform and defect-free crystal interfaces are one of the most promising candidates used in quest for Majorana zero modes (MZMs). However, InAs often exhibit a high density randomly distributed twin defects stacking faults, which result an uncontrolled non-uniform interface. Furthermore, this type disorder can create potential inhomogeneity wire, destroy topological gap, form trivial sub-gap states mimicking MZM transport...
As an environmental friendly insulating medium, C4F7N has received extensive attention in the past two years. In this study, partial discharge (PD) and breakdown characteristics of C4F7N/CO2 gas mixture were investigated using insulation performance test platform. The influence pressure mixing ratio on PD initial voltage (PDIV) different electric fields was tested. It found that PDIV with 2–8% highly non-uniform field showed a linear saturation increasing trend change ratio. increases...
Hybrid semiconductor-superconductor nanowires are predicted to host Majorana zero modes that induce zero-bias peaks (ZBPs) in tunneling conductance. ZBPs alone, however, not sufficient evidence due the ubiquitous presence of Andreev bound states. Here, we implement a strongly resistive normal lead InAs-Al nanowire devices and show most expected state-induced can be suppressed, phenomenon known as environmental Coulomb blockade. Our result is first experimental demonstration this dissipative...
Abstract The detection of trace impurity gases in fluorinated gas (F‐gas) that are widely used the industry offers a significant avenue for equipment status monitoring and mitigating unnecessary emissions. However, formidable electron affinity (EA) adsorption propensity F‐gas molecules render identification impurities within high‐concentration atmosphere exceptionally challenging. Herein, filtration‐sensing strategy is proposed to realize highly sensitive selective Room Temperature (RT)...
Accurately quantifying gas production during internal faults in transformers is paramount for advancing the digitization and intelligence of electric power equipment. This paper introduces a model grounded thermodynamics to calculate transformer oil pyrolysis gases, leveraging chemical equilibrium theory explore temperature-dependent factors such as heat capacity, reaction enthalpy change, constants. By introducing factor quantify molecule molar fractions, establishes system equations track...
Abstract Artificial intelligence (AI) foundation models for colour fundus photography (CFP) have been extensively studied and demonstrated great potential advancing ocular systemic health screening. However, their high computational demands limited clinical interpretability constrain real-world application. These rely on self-supervised learning with massive unlabeled datasets to address the scarcity of high-quality annotations, but often generate irrelevant features fail improve due absence...
Abstract Lead-free piezoelectric ceramics are widely used in actuators, sensors, and transducers due to high coefficients thermal stability. However, the commonly strategies for improving coefficients, such as morphotropic phase boundary (MPB) polymorphic transition (PPT), ineffective temperature In this work, defect dipoles were introduced into barium titanate enhance both its coefficient Donor Nb 5+ acceptor Li + doped BaTiO 3 dipoles, resulting an increase of 267 pC/N a significant...
ABSTRACT Epoxy resin insulation materials are prone to micro‐damage such as scratches and electrical treeing, which can lead a decline in performance threaten the safe operation of entire system. Microcapsule‐based self‐healing technology is one most promising solutions address issues epoxy resin. However, research has shown that when microcapsule doping concentration exceeds 3 wt%, mechanical strength decreases significantly, while too low affects healing efficiency. This paper focuses on...
Objective To explore the application of a deep learning model based on lateral nasopharyngeal X-rays in diagnosing tonsillar and adenoid hypertrophy. Methods A retrospective study was conducted using DICOM images from pediatric outpatients aged 2-12 at our hospital July 2014 to 2024. The included patients exhibiting varying degrees respiratory obstruction symptoms (disease group). Initially, 1006 were collected, but after excluding low-quality standardizing imaging phase, 819 remained. These...
Ultra-high frequency (UHF) method is widely used in gas-insulated switchgear (GIS) partial discharge (PD) online monitoring because this technique has excellent anti-interference ability and high sensitivity. GIS PD pattern recognition based on effective features acquired from UHF signals. Therefore, paper proposes a new feature extraction that multifractal detrended fluctuation analysis (MFDFA). signals of four typical models were collected laboratory analyzed. In addition, the these was...
We extend the classical Liouville Theorem from Laplacian to fractional Laplacian, that is, we prove Every $α$-harmonic function bounded either above or below in all of $R^n$ must be constant.
The decomposition mechanism of an environmentally friendly insulating medium C<sub>3</sub>F<sub>7</sub>CN was explored.
As a new environmental-friendly gas insulating medium, perfluoroisobutyronitrile (C <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> F xmlns:xlink="http://www.w3.org/1999/xlink">7</sub> N) has been widely concerned in recent years due to its relatively low global warming potential and excellent dielectric strength, which the replace most greenhouse gas, sulfur hexafluoride(SF xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> ). However,...
As an environment-friendly gas insulating medium, C <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> F xmlns:xlink="http://www.w3.org/1999/xlink">7</sub> N has attracted great attention in recent years due to its excellent environmental protection and insulation performance. However, studies on the performance of N/N xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> mixture are not comprehensive at present. In this paper, breakdown...
C5-PFK has attracted much attention as one of the most promising SF <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</inf> substitutes for medium voltage (MV) power equipment because its high insulation strength and low global warming potential (GWP). In this paper, dielectric properties C5-PFK-Air C5-PFK-CO xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> mixtures are experimentally investigated, to explore effective solution application in...