Chi Ma

ORCID: 0000-0003-1598-6469
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Advanced Thermoelectric Materials and Devices
  • Chalcogenide Semiconductor Thin Films
  • Laser-Plasma Interactions and Diagnostics
  • Graphene research and applications
  • Heusler alloys: electronic and magnetic properties
  • Nuclear Physics and Applications
  • Atomic and Subatomic Physics Research
  • Optical Systems and Laser Technology
  • Physics of Superconductivity and Magnetism
  • Gyrotron and Vacuum Electronics Research
  • Magnetic confinement fusion research
  • Thermal properties of materials
  • Frequency Control in Power Systems
  • Electromagnetic Launch and Propulsion Technology
  • Cold Fusion and Nuclear Reactions
  • Metallurgy and Material Forming
  • Laser Material Processing Techniques
  • Remote Sensing and LiDAR Applications
  • Quantum and electron transport phenomena
  • Particle accelerators and beam dynamics
  • Laser-Ablation Synthesis of Nanoparticles
  • Hydrology and Watershed Management Studies
  • Laser-induced spectroscopy and plasma
  • Water resources management and optimization
  • Radio Frequency Integrated Circuit Design

Chongqing University
2024

Shandong University of Science and Technology
2019-2023

Beijing Normal University
2019-2023

Arizona State University
2020

State Key Laboratory of Remote Sensing Science
2019

Northeastern University
2017

Lucky Technology (China)
2006

China Academy of Engineering Physics
2003

Laser Fusion Research Center
2003

Institute of Mathematics and Informatics
2000

Mapping landfast sea ice at a fine spatial scale is not only meaningful for geophysical study, but also of benefit providing information about human activities upon it. The combination unmanned aerial systems (UAS) with structure from motion (SfM) methods have already revolutionized the current close-range Earth observation paradigm. To test their feasibility in characterizing properties and dynamics fast ice, three flights were carried out 2016–2017 austral summer during 33rd Chinese...

10.3390/rs11070784 article EN cc-by Remote Sensing 2019-04-01

This paper presents further research on the pulse-type magnetic flux pump (MFP). The MFP is used to excite a Bi-2223 double-pancake superconducting coil cooled by cryocooler. inductance of 76 μH. cryogenic structure optimized adding cold frame outside. powered dc voltage source. excitation effects are investigated changing input voltage. pumping current curves have been obtained with various from 2.0 5.5 V. fitting calculations show that saturated in high-temperature superconductor (HTS) 200...

10.1109/tasc.2017.2655001 article EN IEEE Transactions on Applied Superconductivity 2017-01-30

Abstract: In this paper we prove that a hypoelliptic vector fields on the torus Tn may be transformed by smooth diffeomorphism of into field with constant coefficients, which moreover satisfy Diophantine condition. We also discuss relation between vecttor and almost periodic motions

10.1080/03605300008821516 article EN Communications in Partial Differential Equations 2000-01-01

Thermoelectric (TE) materials attract worldwide attention due to their energy conversion advantage from its stability and no moving parts. Au/SnSe composites are designed prepared by using vacuum melting, grinding, physical vapor deposition, spark plasma sintering. Anisotropic microstructure is confirmed XRD patterns SEM images. Introduction of Au changes the transport channel carriers along press direction percolation effect, which results in increase electrical conductivity this direction....

10.1021/acsaem.8b02216 article EN ACS Applied Energy Materials 2019-03-01

First principles density-functional theory calculations were performed to investigate quantum confinement and edge effects on the electronic properties of zigzag green phosphorene nanoribbons (ZGPNRs) with chemical species including H, OH, F, Cl, O, S for ribbons width in range 0.5 \~{} 3.7 nm. The ZGPNRs obtained from relaxed two-dimensional (2D) monolayer different cutting strategies most energetically favorable ribbon configuration was selected further exploration size effects. It found...

10.1088/1361-648x/ab68f6 article EN Journal of Physics Condensed Matter 2020-01-08

Motivated by the possibility of a strain tuning effect on electronic properties graphene, semimetal-Mott insulator transition process uniaxial honeycomb lattice is numerically studied using Determinant Quantum Monte Carlo. As our simulations are based half-filled repulsive Hubbard model, system sign problem free. Herein, temperature-dependent DC conductivity used to characterize transport properties. The data suggest that metallic suppressed in presence strain. More interestingly, within...

10.1002/pssr.202100287 article EN physica status solidi (RRL) - Rapid Research Letters 2021-07-13

In this paper, we perform a comparative study, both experimentally and theoretically, on the dry laser cleaning SiO2 particles surface of SrTiO3 (STO) Si single crystal substrates. Firstly, dependences efficiency energy density, pulse number, size was investigated experimentally. It is found that threshold decreases with increase particle size. Furthermore, for same particles, STO larger than Si. Then, based analysis interactions among light field, substrate material, corrected thermal...

10.1063/5.0080911 article EN cc-by AIP Advances 2022-05-01

A current-mode neutron time-of-flight(nTOF) energy spectrometer for inertial confinement fusion(ICF) ion temperature measurements has been designed which will reduce measuring error of fusion spectra when the yield is low. The consists a shallow cup-shaped ST1422 fast plastic scintillator with thickness 3 mm and full effective volume 104 cm3, microchannel plate photomultiplier tube(MCP-PMT), piece coaxial cable(SUJ-50-7) length 20 m, transient oscilloscope bandwidth 7 GHz. main performances...

10.1088/1004-423x/8/12/006 article EN Acta Physica Sinica (Overseas Edition) 1999-12-01

The diagnostic of DT fuel plasma areal density in the direct-driven implosion experiments on SG-Ⅱ laser facility has been performed by measuring number recoil D and T produced 14MeV neutron′s scattering. particles were detected CR39 solid-state nuclear track detector. experimental results indicate that uniformity illuminating affects compression to a certain extent. exploding pusher target is about one order lower than ablative-driven target. This means better There strong relationship...

10.7498/aps.50.2408 article EN cc-by Acta Physica Sinica 2001-01-01

Abstract. Many rivers in the East Asian Monsoon region originates from Qinghai-Tibet Plateau (QTP), which provide huge amount of fresh water resources for downstream counties. As a characterized by high altitude and cold weather, distributed hydrological modelling valuable knowledge about cycle cryosphere QTP. However, lack streamflow data restricts application models this data-sparse region. Previous studies have demonstrated possibility using remote sensing evapotranspiration (RS-ET) to...

10.5194/hess-2023-200 preprint EN cc-by 2023-08-24
Coming Soon ...