Yongqi Zhu

ORCID: 0000-0002-4822-7832
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Research Areas
  • Perovskite Materials and Applications
  • Quantum Dots Synthesis And Properties
  • Advanced materials and composites
  • Graphite, nuclear technology, radiation studies
  • Advanced Image and Video Retrieval Techniques
  • Domain Adaptation and Few-Shot Learning
  • Video Surveillance and Tracking Methods
  • Metal and Thin Film Mechanics
  • HVDC Systems and Fault Protection
  • Fusion materials and technologies
  • Conducting polymers and applications
  • Multilevel Inverters and Converters
  • Diamond and Carbon-based Materials Research
  • Titanium Alloys Microstructure and Properties
  • Advanced DC-DC Converters
  • Maritime Transport Emissions and Efficiency
  • Graphene research and applications
  • Intermetallics and Advanced Alloy Properties
  • Railway Systems and Energy Efficiency
  • Chalcogenide Semiconductor Thin Films
  • Tribology and Wear Analysis
  • Orthopaedic implants and arthroplasty
  • Spectroscopy and Chemometric Analyses
  • Silicon Carbide Semiconductor Technologies
  • Radiation Shielding Materials Analysis

Qingdao University of Science and Technology
2025

South China Agricultural University
2024

Beijing Jiaotong University
2022-2023

Chinese Academy of Sciences
2019-2023

University of Chinese Academy of Sciences
2019-2023

Lanzhou Institute of Chemical Physics
2023

Harbin Institute of Technology
2022

Nanjing University of Science and Technology
2022

Wuyi University
2022

Hubei University
2021-2022

Rapid and accurate estimation of soil organic matter (SOM) content is great significance for agricultural production carbon stock estimation. Visible-near-infrared spectroscopy (Vis-NIR) portable X-ray fluorescence (pXRF), with the fast, low-cost, environmental friendly characteristics, can realize rapid large-scale detection SOM. However, due to heterogeneity complexity soil, SOM using a single sensor often leads high uncertainty in result. Multi-sensor data fusion one approaches solve this...

10.1016/j.geoderma.2022.116301 article EN cc-by Geoderma 2022-12-09

Multi-view representation learning aims to extract comprehensive information from multiple sources. It has achieved significant success in applications such as video understanding and 3D rendering. However, how improve the robustness generalization of multi-view representations unsupervised incomplete scenarios remains an open question this field. In study, we discovered a positive correlation between semantic distance tolerance for data corruption. Moreover, found that ratio consistency...

10.1109/tcsvt.2023.3300319 article EN IEEE Transactions on Circuits and Systems for Video Technology 2023-08-01

ABSTRACT Polyethylene oxide (PEO)‐based polymers are commonly used in solid‐state lithium‐ion batteries, though their high crystallinity at room temperature reduces ionic conductivity. In this research, zeolitic imidazolate framework‐67 (ZIF‐67), with its regular dodecahedral structure, large surface area, and numerous nanoscopic pores, is synthesized uniformly dispersed into a PEO matrix to create novel composite polymer electrolyte (CPE). ZIF‐67 effectively enhances the mechanical...

10.1002/app.56780 article EN Journal of Applied Polymer Science 2025-01-27

SnO2 films as a promising electron transport layer (ETL) have been widely used in planar-type perovskite solar cells to achieve an impressive improvement the conversion efficiency. However, compared with mesoporous ETL, interfacial charge carrier transfer of ETL is severely limited due issues oxygen vacancy defects and crystal lattice mismatch between perovskite, which generally leads growth randomly stacked porous layers subsequently impacts properties. In this work, we developed facile...

10.1021/acsami.1c17260 article EN ACS Applied Materials & Interfaces 2021-11-20

For urban rail transit, high-voltage ac power is generally transmitted from the main substation to traction (TS), which employs isolated diode–rectifiers feed dc supply system. The train current feeds back negative cubicle of TS through running rail, not totally Earth. However, traditional (TTPS) shows limitations on braking energy-wasting, high potential, stray current, and so on. Thus, a autotransformer (DCAT) (HDATPS) proposed in this article. Both configurations principles three typical...

10.1109/tte.2022.3151071 article EN IEEE Transactions on Transportation Electrification 2022-02-12

The evolutions of phase constitutions and mechanical properties a β-phaseTi–36Nb–5Zr (wt%) alloy during thermo-mechanical treatment were investigated. consisted dual (β+α″) exhibited double yielding phenomenon in solution treated state. After cold rolling subsequent annealing at 698 K for 20 min, an excellent combination high strength (833 MPa) low modulus (46 GPa) was obtained. can be attributed to density dislocations, nanosized α grain refinement. On the other hand, Young׳s originates...

10.1016/j.pnsc.2015.05.001 article EN cc-by-nc-nd Progress in Natural Science Materials International 2015-06-01

Multi-view representation learning is essential for many multi-view tasks, such as clustering and classification. However, there are two challenging problems plaguing the community: i)how to learn robust representations from mass unlabeled data ii) how balance view consistency specificity. To this end, in paper, we proposed a novel hybrid contrastive fusion method extract view-common data. Specifically, found that introducing an additional space aligning on enables model representations. At...

10.1109/icdmw58026.2022.00068 article EN 2022 IEEE International Conference on Data Mining Workshops (ICDMW) 2022-11-01

2D materials (TDMs) have demonstrated their great potential as functional in perovskite solar cells (PSCs) to boost conversion efficiency. As a versatile TDM, g‐C 3 N 4 has far less applications PSCs than medical science, energy storage, supercapacitors, and catalysis. Is naturally incompatible with perovskites limiting cooperation? Herein, the capacity of two kinds triazine‐based interfacial modifiers for CH NH PbI (MAPbI ) based on density theory is discussed. Due existence feasible...

10.1002/aesr.202200076 article EN cc-by Advanced Energy and Sustainability Research 2022-06-26

Abstract Metal halide perovskites (MHPs) emerging as a promising semiconducting material have shown superiority in optoelectronic applications. Currently, polycrystalline perovskite thin films are dominantly employed; while owing to the existence of grain boundary, typically charge transport issues. To overcome these limitations, single crystal (SC) is synthesized and applied more superior bulk properties compared with its counterpart. Nevertheless, due defective nature surface, surfaces...

10.1002/mame.202200452 article EN Macromolecular Materials and Engineering 2022-08-27

In this work, we study the impact of pyrolysis temperature and time on crystalline structure lab made silicon carbide (SiC) fibers their mechanical properties. The polycrystalline characteristic length scales β-SiC in were characterized with X-ray diffraction, transmission electron microscope synchrotron small angle scattering. sizes crystallites, particles interparticle distance all increase as or increases while crystallinity nearly remains constant, indicating SiC crystals fiber grow by...

10.2109/jcersj2.18151 article EN Journal of the Ceramic Society of Japan 2019-01-31

Multilevel voltage-balancing DC-DC converter (MVBDC) is generally characterized by modularity, low electrical stress of switches, bidirectional energy flow, simple structure and control, which shows good prospects in high-voltage high-power applications. However, the potential failure risk increases along with MVBDC voltage levels. To address this issue, article proposes a fault protection multilevel (FP-MVBDC). Compared traditional MVBDC, FP-MVBDC introduces circuits that can remove module...

10.1109/tia.2023.3314017 article EN IEEE Transactions on Industry Applications 2023-01-01

Multilevel voltage-balancing DC-DC converter (MVBDC) generally shows the advantages of simple structure and control, modularization, low electrical stress switches, bidirectional energy flow, high power density efficiency, which has good prospect in high-power high-voltage DCDC application. However, with increasing voltage level MVBDC, both number modules potential risk fault increases. Therefore, ride-through scheme control strategy MVBDC are proposed this paper. By introducing improved...

10.1109/itec53557.2022.9814031 article EN 2022-06-15

In recent years, CH(NH<sub>2</sub>)<sub>2</sub>PbI<sub>3</sub> (FAPbI<sub>3</sub>) has received extensive attention due to the suitable band gap, becoming most attractive photoelectric functional material in perovskite solar cells. However, traditional layer prepared by formamidine iodide (FAI) and lead (PbI<sub>2</sub>) inaccurate stoichiometric ratio, high defect density, low stability, crystallinity, which makes it challenging...

10.7498/aps.72.20221461 article EN Acta Physica Sinica 2022-10-12

The traditional DC traction power supply system generally shows low utilization rate of train braking energy. High-voltage autotransformer (HDATPS) has been introduced to solve the problems. To further improve energy, an energy-storage based multilevel voltage-balancing DC-DC converter (ES-MVBDC) is proposed in this paper. Both operation principles and energy storage control strategy are discussed detail. Finally, simulation model ES-MVBDC built verify feasibilities effectiveness above...

10.1109/itec55900.2023.10186930 article EN 2023-06-21
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