Junjun Li

ORCID: 0009-0007-1282-7792
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About
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Research Areas
  • Superconducting Materials and Applications
  • Magnetic confinement fusion research
  • Particle accelerators and beam dynamics
  • Fusion materials and technologies
  • Photonic and Optical Devices
  • Photonic Crystals and Applications
  • Power System Reliability and Maintenance
  • Optical Coatings and Gratings
  • Advanced Computational Techniques and Applications
  • Power Systems and Technologies
  • Advanced Optical Sensing Technologies
  • Ga2O3 and related materials
  • Advanced Sensor and Energy Harvesting Materials
  • Advanced Photocatalysis Techniques
  • Advanced Measurement and Detection Methods
  • Software System Performance and Reliability
  • Industrial Vision Systems and Defect Detection
  • Smart Grid and Power Systems
  • Smart Grid Security and Resilience
  • Simulation and Modeling Applications
  • Organic Light-Emitting Diodes Research
  • Nanomaterials and Printing Technologies
  • Optical Systems and Laser Technology
  • Infrared Target Detection Methodologies
  • Simulation Techniques and Applications

ITER
2024-2025

Tianjin University
2023

Chinese Academy of Sciences
2013-2020

Hefei University of Technology
2018-2020

Institute of Plasma Physics
2013-2020

Tsinghua University
2017-2018

Fujian Normal University
2009-2012

For the large-scale fusion magnets of International Thermonuclear Experimental Reactor (ITER) tokamak, wound with cable-in-conduit conductors, application sophisticated numerical models able to analyse thermal–hydraulic behaviour during plasma scenarios is paramount importance guarantee an adequate stability margin operating conditions. The SuperMagnet code has been developed by CryoSoft intent simultaneously simulate electrical, thermal and hydraulic phenomena occurring operation...

10.3390/app15073526 article EN cc-by Applied Sciences 2025-03-24

Abstract Since the last IAEA-FEC in 2021, significant progress on development of long pulse steady state scenario and its related key physics technologies have been achieved, including reproducible 403 s long-pulse steady-state H-mode plasma with pure radio frequency (RF) power heating. A thousand-second time scale (∼1056 s) fully non-inductive high injected energy up to 1.73 GJ has also achieved. The EAST operational regime β P significantly extended ( H 98y2 > 1.3, ∼ 4.0, N 2.4 n e / GW...

10.1088/1741-4326/ad4270 article EN cc-by Nuclear Fusion 2024-04-24

Despite a century of research, the inability to design flexible transparent electrodes with low cost and high stability has been greatest obstacle in realizing electronics. Herein, we report growth self-assembled SnO2 nanoshells on thin copper nanowire (Cu NW) networks using simple effective solution method. In addition, SnO2–Cu NW films exhibit an extremely sheet resistance ∼13.6 Ω/sq, ∼83.5% optical transparency. harsh environments (such as strong oxidation, heat, humidity conditions),...

10.1021/acsanm.3c01608 article EN ACS Applied Nano Materials 2023-06-02

Disruption database and disruption warning of the EAST tokamak had been established by a research group. The database, based on Structured Query Language (SQL), comprises 41 parameters, which include current quench characteristics, EFIT equilibrium kinetic halo currents, vertical motion. Presently most databases are plasma experiments non-superconducting devices. purposes to find characteristics statistics fully superconducting EAST, elucidate physics underlying disruptions, explore...

10.1088/1009-0630/18/12/04 article EN Plasma Science and Technology 2016-11-21

The <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">SuperMagnet</i> suite of code is here applied to study the Poloidal Field (PF) and Correction Coils (CC) their cryogenic distribution during a quench in PF coils. In model, more than 65 km conductors, bus-bars, 3 pipes, cold circulator, several bypass control valves are implemented reproduce circuits. simulated with an external heat disturbance at location characterized by lowest temperature...

10.1109/tasc.2024.3356498 article EN IEEE Transactions on Applied Superconductivity 2024-01-22

We report 1 × 4 optical splitters (OSs) with different splitting ratios based on either rod-type or hole-type silicon photonic crystal self-collimation ring resonators (SCRRs). The four beam of the OSs are formed by changing radii rods air holes. light propagating along SCRR can be controlled effect. transmission spectra at through and drop ports investigated using finite-difference time-domain (FDTD) method. simulated results agree well theoretical calculation. For 1550-nm dropping...

10.1088/0256-307x/29/12/124201 article EN Chinese Physics Letters 2012-12-01

Integrated with advanced information technologies, traditional power grids are evolving to Cyber Physical Power Sys-tems (CPPS). Accordingly, new simulation methods demanded, which focuses on interactions between electrical network and in-formation network. In this paper, an event-driven method for CPPS is proposed. To modeling cross-network interactions, changes of component statuses taken as CPS events. Then, a virtual timeline created provide time coordination synchronizing continuous...

10.1109/ei2.2017.8245711 article EN 2017-11-01

To guarantee the display quality in harsh environment, a LCD military application has to be ruggedized via bonding an ITO glass reduce electromagnetic interference and reflection. However, with same process, rugged LCDs using LC panels from some manufacturers become more easier Mura than other manufacturers. The paper proposes experiment‐and‐simulation‐combined method analyze defects of LCDs. 2 kinds common were tested simulated. It is found that one kind sensitive external force...

10.1002/sdtp.12619 article EN SID Symposium Digest of Technical Papers 2018-05-01

In recent years, with the increase in scale of distribution networks and type devices, traditional fault diagnosis approach relying on human experiences is faced serious challenges. Meanwhile, through testing online monitoring various a large amount operating data has been acquired stored, providing necessary foundation for proposed analysis. To enhance efficacy devices maintenance, data-driven interactive platform designed implemented. this platform, physical models historical records...

10.1109/powercon.2018.8601525 article EN 2021 International Conference on Power System Technology (POWERCON) 2018-11-01

A Low-loss Fabry-Perot interferometer (FPI) constructed in a two-dimensional photonic crystal (2D PhC) is proposed and investigated. The 2D PhC consists of square-lattice cylindrical silicon rods air. It has flat equal frequency contours (EFCs) the range 0.187-0.201<i>c/a</i> for TM modes. Two same line defects with spacing <i>d</i> = 21&radic;2 <i>a</i>, which physical length FP resonant cavity, are introduced to form FPI. two have high reflectivity low transmission. Their transmission...

10.1117/12.851739 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2009-11-20

A drop and split filter (DSF) based on a self-collimation ring resonator (SCRR) in hole-type photonic crystal is proposed demonstrated. The DSF performance was investigated with the finite-difference time-domain (FDTD) simulation technique. By forming three splitters of SCRR properly, self-collimated light can come out from two ports equally while no through port. For wavelength 1550 nm, free spectral range 29.7nm, which covers whole optical communication C-band window. This may have...

10.1117/12.888584 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2010-12-26

LCD TVs are developing in the direction of large size and ultra-thinness. The glass substrate is subject to influence gravity caused by increase problem backlight heating, which turn affects optical characteristics large-size causes display defects. Therefore,this paper explains from perspective change light transmittance liquid crystal panel using mechanical test establishing 65-inch model simulation model, combination finite element TechWiz simulation. displays defect mechanism. Finally,...

10.1117/12.2552732 article EN 2020-01-31
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