A5046729671- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Photonic and Optical Devices
- Semiconductor Lasers and Optical Devices
- Frequency Control in Power Systems
- Advanced Condensed Matter Physics
- Quantum many-body systems
- Smart Grid and Power Systems
- HVDC Systems and Fault Protection
- Quantum and electron transport phenomena
- Magnetic confinement fusion research
- Robotics and Sensor-Based Localization
- Nanofabrication and Lithography Techniques
- Iron-based superconductors research
- Optical Network Technologies
- Digital Media Forensic Detection
- Electric Motor Design and Analysis
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Steganography and Watermarking Techniques
- Direction-of-Arrival Estimation Techniques
- Superconductivity in MgB2 and Alloys
- Magnetic and transport properties of perovskites and related materials
- Urological Disorders and Treatments
- Particle accelerators and beam dynamics
- Topological Materials and Phenomena
BOE Technology Group (China)
2023-2025
Hefei Institutes of Physical Science
2023-2024
Institute of Plasma Physics
2023-2024
Chinese Academy of Sciences
2019-2024
China Southern Power Grid (China)
2020-2024
Zhejiang University
1996-2024
National Synchrotron Radiation Laboratory
2024
University of Science and Technology of China
2005-2024
Institute of Physics
2019-2023
Songshan Lake Materials Laboratory
2023
Large-area and highly sensitive image sensors are vital for undercell fingerprint recognition technology. The photomultiplication-type organic photodetector (PM-OPD) is one of the alternative choices due to its special active layers with ratio donor acceptor by weight about 100:3 achieving single charge carrier transport channels, resulting in relatively low dark current density high external quantum efficiency under bias. optimal PM-OPDs exhibit a maximal 2.1 × 1012 Jones specific...
We employ the determinant projector quantum Monte Carlo method to investigate ground-state magnetic properties in Mott insulating states of half-filled $SU(4)$ and $SU(6)$ Fermi-Hubbard model two-dimensional square lattice, which is free sign problem. The long-range antiferromagnetic Neel order found for case with a small residual moment. Quantum fluctuations are even stronger case. Numeric results consistent either vanishing or weaker ordering than that $SU(4)$.
Facial Expression Recognition (FER) is an important task in computer vision and has wide applications many fields. In this paper, we introduce our approach to the fifth Affective Behavior Analysis in-the-wild (ABAW) Competition which will be held CVPR20223. For facial expression recognition task, there urgent need solve problem that limited size of FER datasets limits generalization ability models, resulting ineffective performance. To address problem, propose a semi-supervised learning...
With the intensification of global climate change, frequency wildfires has markedly increased, presenting an urgent challenge in assessing tripping failures for power systems. This paper proposes innovative method to evaluate spatial wildfire-induced risk transmission lines based on a flame combustion model. Firstly, Bayes theory is employed assess probability wildfire occurrence. Subsequently, Wang Zhengfei’s model utilized estimate potential height along corridor. Thirdly, insulation...
We perform the projector quantum Monte Carlo (QMC) simulation to study trion formation and phase transition in half filled attractive SU(3) Hubbard model on a honeycomb lattice. With increasing interaction, our simulations demonstrate continuous from semimetal charge-density wave (CDW) at critical coupling ${U}_{c}/t=\ensuremath{-}1.52(2)$. The exponents $\ensuremath{\nu}=0.82(3)$ $\ensuremath{\eta}=0.58(4)$ determined by QMC remarkably disagree with those of $N=3$ chiral Ising universality...
Due to the nonlinear properties of superconductors, modeling high-temperature superconducting (HTS) devices is difficult, especially for ones in large scale. In this paper, we develop multiscale model from a two-dimensional (2-D) planar geometry 2-D axisymmetric successfully calculate ac loss large-scale HTS coils. By applying appropriate boundary conditions, infinite-turn coil built 2-D-axisymmetric produce approximated current density an coil. Besides, improved terms coupling, so that...
We report on the fabrication and optimization of lithium niobate planar ridge waveguides at wavelength 633 nm. To obtain a waveguide, oxygen ions with an energy 3.0 MeV fluence 1.5×1015 ions/cm2 are implanted in polished face LiNbO3 crystals. For waveguides, loss 0.5 dB/cm is obtained after annealing 300°C for 30 min. The waveguide fabricated by diamond blade dicing method optimized waveguides. guiding properties investigated prism coupling end-face methods.
We perform large-scale projector determinant quantum Monte Carlo simulations to study the insulating states of half-filled SU(6) Hubbard model on square lattice. The transition from antiferromagnetic state valence bond solid occurs as increasing $U$. In contrast, in SU(2) and SU(4) cases antiferromagnetism persists throughout entire interaction range. case, starts develop weak interacting regime based Slater mechanism Fermi surface nesting. As $U$ passes a crossover value...
We investigate the physics of projected d-wave pairing states using their fermionic entangled pair state (fPEPS) representation. First, we approximate a Bardeen-Cooper-Schrieffer Gaussian fPEPS. Next, translate resulting into fPEPS tensors and implement Gutzwiller projection which removes double occupancy by modifying local tensor elements. The network representation allows us to evaluate physical quantities in thermodynamic limit without employing approximation. Despite having very few...
Electromagnetic simulations are critical procedures before constructing REBCO-based high-field magnets. However, the large number of tapes in multiple pancakes makes calculation challenging. Homogenization technique is effective simplifying modeling large-scale REBCO coils, which has been employed both <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">H</i> and xmlns:xlink="http://www.w3.org/1999/xlink">T-A</i> models. Among them, model...
The market share of organic light-emitting diode (OLED) screens in consumer electronics has grown rapidly recent years. In order to increase the screen-to-body ratio OLED phones, under-screen or in-screen fingerprint recognition is a must-have option. Current commercial hardware schemes include adhesive, ultrasonic, and optical ones. No mature solution been proposed. this work, we designed manufactured an panel with system for first time, by integrating active sensor array into panel....
A wavelength switchable semiconductor laser based on half-wave coupled Fabry-Pérot and rectangular ring resonators is proposed demonstrated. The device consists of all-active waveguides to facilitate the fabrication. cavity lengths are designed with a small difference employ Vernier effect obtain large tuning. coupler used produce phase-dependent loss, thus achieving high side-mode suppression ratio (SMSR). By adjusting current applied just one electrode, six-channels switching 200-GHz...
Abstract Here we propose a new approach capable of calculating the hysteresis loss 3D HTS coil models based on modeling framework multi-scale method. The study enhances method for 2D simulations by introducing homogenization technique to simplify topological features coils’ cross sections. With simplification, A -formulation magnetostatic model is built magnetic field estimation, while H superconducting solved tape’s current density and loss. Since different spatial dimensions are employed...
A hybrid superconducting central solenoid employs Bi-2212 high-temperature superconductors and Nb3Sn low-temperature under the design of Institute Plasma Physics, Chinese Academy Of Science for further upgrade to CFETR, namely, China Fusion Engineering Testing Reactor. The conductor type both parts is cable-in-conduit conductors. This paper mainly focuses on stability study inner part whose works a peak magnetic field 16.79 T, maximum operating current each turn 50 kA. simulation based 1-D...