Yukai Liu

ORCID: 0000-0003-2759-1608
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About
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Research Areas
  • Magnetic confinement fusion research
  • Fusion materials and technologies
  • Superconducting Materials and Applications
  • Particle accelerators and beam dynamics
  • Ionosphere and magnetosphere dynamics
  • GaN-based semiconductor devices and materials
  • Laser-Plasma Interactions and Diagnostics
  • Ga2O3 and related materials
  • ZnO doping and properties
  • Nanowire Synthesis and Applications
  • Aluminum Alloy Microstructure Properties
  • MicroRNA in disease regulation
  • Cancer-related molecular mechanisms research
  • GNSS positioning and interference
  • Additive Manufacturing and 3D Printing Technologies
  • Semiconductor Quantum Structures and Devices
  • Circular RNAs in diseases
  • Additive Manufacturing Materials and Processes
  • Optical Systems and Laser Technology
  • Nuclear Materials and Properties
  • Solar and Space Plasma Dynamics
  • Astronomical Observations and Instrumentation

University of Science and Technology of China
2016-2021

Chinese Academy of Sciences
2016-2021

Nanchang University
2021

Shenzhen University
2019-2021

Hefei Institutes of Physical Science
2021

Institute of Plasma Physics
2016-2021

Army Medical University
2016

Daping Hospital
2016

Chung Yuan Christian University
2009-2011

Long non-coding RNAs (lncRNAs) have been found to be involved in the pathogenesis of coronary artery disease (CAD). However, it remains established whether or not circulating lncRNAs can serve as biomarkers CAD. Using a microarray-based lncRNA expression profiling, we 86 that were differentially expressed peripheral blood monocytes and plasma from 15 CAD patients control subjects. After choosing consistent criterion (average normalized intensity ≥7 with significance <0.005) confirmed by...

10.1093/cvr/cvw022 article EN Cardiovascular Research 2016-02-07

In the last few years, long-pulse H-mode plasma discharges (with small edge-localized modes and normalized beta, βN ~ 1) have been realized at Experimental Advanced Superconducting Tokamak (EAST). This paper reports on high-βN (>1.5) in 2015 EAST campaign. The characteristics of these plasmas presented a database. Analysis experimental limit has revealed several main features typical discharges. Firstly, efficient, stable high heating power is required. Secondly, control impurity radiation...

10.1088/1741-4326/aa626c article EN cc-by Nuclear Fusion 2017-03-24

The internal transport barrier (ITB) has been obtained in ELMy H-mode plasmas by neutron beam injection and lower hybrid wave heating on the Experimental Advanced Superconducting Tokamak (EAST). ITB structure observed profiles of ion temperature, electron density within ρ < 0.5. It was also that formation is stepwise. Due to formation, confinement quality H98y2 increases from 1 1.1 normalized beta, βN, 1.5 near 2. fishbone activity during phase suggests central safety factor q(0) ∼ 1....

10.1088/1361-6587/aa6f2a article EN Plasma Physics and Controlled Fusion 2017-06-06

Chinese fusion engineering test reactor (CFETR) is under conceptual design to bridge gaps between ITER and DEMO. CFETR envisioned produce a 200 MW (200 in phase I will be increased 1-GW level) power with tritium breeding ratio >1 duty cycle time of approximately 0.3-0.5. This paper present the status diagnostic system. Based on experience obtained development diagnostics combined special requirements, progress system has been described. They mainly includes: 1) conditions constraints...

10.1109/tps.2018.2810301 article EN IEEE Transactions on Plasma Science 2018-03-27

Abstract An eight-channel poloidal correlation reflectometer (PCR) with O-mode polarization has been installed in the EAST tokamak to measure fluctuations from core edge. The PCR launches eight different frequency microwaves (20.4, 24.8, 33, 40, 42.4, 48, 52.6, 57.2 GHz) into plasma low field side and two poloidally separated antennae are used receive reflected waves. As a result, diagnostic can (radial)× (poloidal) spatial positions. applied study edge pedestal during an inter-ELM phase...

10.1088/2058-6272/abf4b5 article EN Plasma Science and Technology 2021-04-02

Abstract A calorimetry system has been developed in Experimental Advanced Superconducting Tokamak (EAST). It is employed to evaluate the heat load exhausted by cooling water. Full poloidal coverage achieved after upgrade 2019. The experimental results show that water 64%–86% of injected energy. Moreover, increases faster case with a higher heating power, and this qualitatively confirmed simulation. In addition, longer time required for temperature achieve its maximum power. And decay phase...

10.1088/1402-4896/ac8647 article EN Physica Scripta 2022-08-02

Edge localized mode (ELM) mitigation accompanied by density pump-out has been achieved during the application of resonant magnetic perturbation (RMP) with a toroidal number n = 4 on EAST recently. The mean ELM frequency increases factor 2.7 from 86 to 235 Hz decreased reduction in loss. evolution pedestal electron measured profile reflectometer before and after turning RMP current is presented. Both gradient show decrease RMP. fluctuation region an O-mode reflectometer. broadband range...

10.1063/5.0056082 article EN AIP Advances 2021-07-01

Experimental Advanced Superconducting Tokamak (EAST) aims to demonstrate steady-state advanced high-performance H-mode plasmas with an ITER-like configuration, plasma control and heating schemes. The plasma-facing components in EAST are actively cooled, providing good conditions for researching long-pulse high-energy discharges. A discharge (#59892 discharge) of up 103 s a core electron temperature 4.5 keV was sustained injected energy exceeding 0.22 GJ the 2015–2016 experimental campaign....

10.1088/1361-6587/aa5d88 article EN Plasma Physics and Controlled Fusion 2017-02-01

It has been pointed out that plasma anisotropy a significant impact on the characteristics of magnetohydrodynamic equilibrium and instability. Recently, anisotropic pressure effects induced by 4.6 GHz lower hybrid wave (LHW) heating Experimental Advanced Superconducting Tokamak (EAST) investigated. The mechanism is due to high-energy electrons generated LHW Landau damping in direction parallel magnetic field line.

10.1088/1361-6587/aa6988 article EN Plasma Physics and Controlled Fusion 2017-03-28

Abstract The extraordinary mode (X-mode) lower cut-off frequency is proposed for use in the reflectometry diagnostic on ITER electron density profile measurement, which a trade-off between extreme plasma parameters and accessible probing frequency. In contemporary experiments, can be identified at below cyclotron ( f ce ) under certain conditions. We provide here, first time, experimental validation of profiles via measurement EAST. corresponding group delay evolves continuously with upper...

10.1088/2058-6272/ac52e9 article EN Plasma Science and Technology 2022-02-08

A visible laser-based vibration compensation interferometer has recently been designed for the EAST tokamak and bench test finished. The system was optimized its installation on EAST. value of final optical power before detectors without plasma calculated from component result, which is quite close to measured value. nanometer level displacement (of order laser's wavelength) clearly by a modulation piezoelectric ceramic unit, proving system's capability.

10.1088/1009-0630/18/2/19 article EN Plasma Science and Technology 2016-02-01

A method of fast data processing has been developed to rapidly obtain evolution the electron density profile for a multichannel polarimeter-interferometer system (POLARIS) on J-TEXT. Compared with Abel inversion method, analyzed by this can quickly offer important information. This advantage calculation speed order ten milliseconds per normal shot and it is capable up 1 MHz sampled data, which helpful studying sawtooth instability disruption between shots. In duration flat-top plasma current...

10.1088/1009-0630/18/12/01 article EN Plasma Science and Technology 2016-11-21

Fast Ejecting System of Targeted sAmple called FESTA has been developed to carry out the measurement dynamic hydrogen retention by a test sample. A sample can be exposed and extracted from targeted plasma at any time using FESTA, however, when exposing sample, chamber wall gets coated some as it is open QUEST vacuum vessel. We refer this plasma-induced background. To measure amount retained itself, contribution induced background must subtracted measurements. accurate plasma-exposed...

10.1585/pfr.15.2402013 article EN Plasma and Fusion Research 2020-04-06

This paper presents the results of density scanning experiment on 2018 EAST campaign to study effect gas fueling energy confinement ELMy H-mode. The is carried out in a USN configuration, with neutral beam and lower hybrid wave heating fueling, upper triangularity δup ∼ 0.47. total stored energy, H98, βN decrease normalized density. Compared variations temperature at pedestal, core decreases more significantly for both Te Ti, leading large reduction pressure an increase pedestal electron...

10.1063/5.0062690 article EN cc-by AIP Advances 2021-10-01

Microwave reflectometry diagnostics have been widely used to measure density profiles in fusion plasma. However, the high sensitivity of plasma turbulence often results large radial deviations edge profile and causes difficulty evaluation. To improve performance evaluation, a modified RANdom SAmple Consensus (RANSAC) method has applied fit measured by on experimental advanced superconducting tokamak. Compared with traditional least-squares method, RANSAC is much more efficient robust fitting...

10.1063/5.0035962 article EN Review of Scientific Instruments 2021-04-01

High orientation InN films on oxide buffer layer were grown by MOMBE. Near-infrared emission peak, centered at 0.75 eV, was observed from PL measurement. Experimental results reveal that can be used in lattice-mismatched III-V heteroepitaxial systems.

10.1109/cleopr.2009.5292468 article EN 2009-08-01
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