Yongkang Zhang

ORCID: 0000-0001-7050-1132
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Advanced Fiber Optic Sensors
  • Photonic Crystal and Fiber Optics
  • Photonic and Optical Devices
  • Molecular Junctions and Nanostructures
  • Optical Network Technologies
  • Supramolecular Chemistry and Complexes
  • Sensorless Control of Electric Motors
  • Terahertz technology and applications
  • Plasmonic and Surface Plasmon Research
  • Luminescence and Fluorescent Materials
  • High-Voltage Power Transmission Systems
  • Conducting polymers and applications
  • Control Systems in Engineering
  • Advanced Fiber Laser Technologies
  • Advanced biosensing and bioanalysis techniques
  • Power Systems and Technologies
  • Power Systems and Renewable Energy
  • Magnetic Bearings and Levitation Dynamics
  • Electric Motor Design and Analysis
  • Spectroscopy and Laser Applications
  • Advanced Sensor Technologies Research
  • Microgrid Control and Optimization
  • Navier-Stokes equation solutions
  • Surface Chemistry and Catalysis
  • Analytical Chemistry and Sensors

Southeast University
2012-2025

The Eighth Hospital of Xi'an
2025

Wuhan University
2023-2024

Jinan University
2020-2024

Shanghai Jiao Tong University
2024

Wenzhou University
2022-2023

North China Electric Power University
2023

Technology and Engineering Center for Space Utilization
2022

Ludong University
2022

Shandong Academy of Sciences
2022

Intermolecular charge transport is one of the essential modes for modulating in molecular electronic devices. Supermolecules are highly promising candidates devices because their abundant structures and easy functionalization. Herein, we report an efficient strategy to enhance through pillar[5]arene self-assembled monolayers (SAMs) by introducing cationic guests. The current density SAMs can be raised up about 2.1 orders magnitude inserting molecules into cavity pillar[5]arenes SAMs....

10.1002/anie.202216987 article EN Angewandte Chemie International Edition 2023-02-02

Rationale: Macular damage is a rare yet significant ocular complication of coronavirus disease 2019 (COVID-19) infection. This report highlights the clinical features, diagnosis, treatment, and outcomes in 2 cases COVID-19-associated macular damage, contributing to understanding its pathophysiology management. Patient concerns: Both patients presented with sudden onset visual impairment black shadows their central fields shortly after contracting COVID-19. Diagnoses: The first patient,...

10.1097/md.0000000000041076 article EN cc-by-nc Medicine 2025-01-17

We propose the design of a simple large-mode area microstructured optical fiber with low bending loss and large difference between fundamental mode high-order modes. Single-mode operation in is realized by introduction small diameter holes, whereas three holes two-ring hole fiber. also introduce low-index rods into core fiber, which can effectively compensate reduction induced

10.1109/jlt.2012.2230245 article EN Journal of Lightwave Technology 2012-12-05

We propose the design of a low-loss suspended core terahertz fiber with rectangular-shaped dielectric strips in cross section. The finite element method is used to analyze characteristics fiber. Terahertz wave frequency range from 0.74 ~ 0.95 THz efficiently confined region total loss lower than 0.086 dB/cm ( 0.02 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> ). Meanwhile, any contact on surface this will not disturb field and...

10.1109/jphot.2013.2293609 article EN cc-by-nc-nd IEEE photonics journal 2013-12-01

This paper studies the nonautonomous micropolar fluid with generalized Newton constitutive law in two‐dimensional bounded domains. We first establish that generated continuous process of solutions operator possesses a pullback attractor. Then we verify existence statistical by constructing invariant Borel probability measures. Further, prove possess degenerated regularity Lusin's type provided Grashof number associated to external forces is small enough.

10.1002/mma.9123 article EN Mathematical Methods in the Applied Sciences 2023-03-04

Abstract Intermolecular charge transport is one of the essential modes for modulating in molecular electronic devices. Supermolecules are highly promising candidates devices because their abundant structures and easy functionalization. Herein, we report an efficient strategy to enhance through pillar[5]arene self‐assembled monolayers (SAMs) by introducing cationic guests. The current density SAMs can be raised up about 2.1 orders magnitude inserting molecules into cavity pillar[5]arenes...

10.1002/ange.202216987 article EN Angewandte Chemie 2023-02-02

Operando and precisely probing aqueous pH is fundamentally demanded, both in chemical biological areas. Conventional probes, subjected to the larger size, are probably unfit for application some extreme scenarios, such as a trace amount of samples. In this paper, we have further developed sensor that leverages microfiber Bragg grating with an ultra-compact size down order magnitude 10−14 m3. Using electrostatic self-assembly layer-by-layer technique, functional film consisting sodium...

10.3390/opt1020016 article EN cc-by Optics 2020-08-11

The aim of this research is to shorten the startup time for high-speed vane-motor. This considered as a challenging task because during startup, signal-to-noise ratio (SNR) motor back electromotive-force (EMF) too low implement closed-loop control. Herein, unique control strategy with hybrid speed-position-current tracking controller (HSPCTC) proposed achieve rapid sensorless and an instantaneous mode switching into closed-loop. HSPCTC forms equivalent semi-closed-loop that allows...

10.1109/tpel.2024.3363039 article EN IEEE Transactions on Power Electronics 2024-02-06

Elucidating charge transport (CT) through proteins is critical for gaining insights into ubiquitous CT chain reactions in biological systems and developing high-performance bioelectronic devices. While intra-protein has been extensively studied, crucial knowledge about inter-protein via interfacial amino acids still absent due to the structural complexity. Herein, by loading cytochrome c (Cyt c) on well-defined peptide self-assembled monolayers mimic protein–protein interface, we provide a...

10.1021/acs.nanolett.4c00164 article EN Nano Letters 2024-03-29

We demonstrate a non-intrusive dynamic monitoring method of oil well flow based on distributed optical fiber acoustic sensing (DAS) technology and the turbulent vibration. The quantitative measurement rate is theoretically acquired though amplitude demodulated phase changes from DAS impact in tube pipe wall. experimental results show that relationships between changes, both whole frequency region sensitive-response region, fit quadratic equation well, with max R2 0.997, which consistent...

10.3390/s22114044 article EN cc-by Sensors 2022-05-26

This paper presents the design and performance of an integrated magnetorheological fluid brake axial flux permanent magnet (IMRFB-AFPM) machine with two switchable operation modes: rotation modes while has kinds windings: armature winding in stators braking radial stator. In mode, this is equal to a conventional AFPM high torque density. When switching MR excited by applies large damping stress rotor it. illustrates topology, principles, flow proposed machine. Then, analyzes generation...

10.1109/tte.2023.3287925 article EN IEEE Transactions on Transportation Electrification 2023-06-23

A novel kind of terahertz directional optical fibre coupler is proposed. The coupling characteristics and operation bandwidth the three-core photonic crystal are investigated. Numerical results show that it possible to achieve a broadband with small length few centimetres. In addition, modified configuration, which can wider lower absorption loss,

10.1088/0022-3727/44/40/405104 article EN Journal of Physics D Applied Physics 2011-09-14

We present in this article a proposal and design for dual-mode optical fibres fibre-to-the-home applications. High-order modes the fibre can be effectively suppressed by connection of with standard single-mode at two ends fibre. The alignment tolerance splicing process is presented. In particular, low bending loss operation splice demonstrated using proposed technique.

10.1088/2040-8978/13/1/015402 article EN Journal of Optics 2010-12-07

10.1016/j.photonics.2013.12.002 article EN Photonics and Nanostructures - Fundamentals and Applications 2014-01-04

We demonstrate a microfiber Bragg grating as the reflective refractometer with function of self-photoheating. The rare earth-doped fiber provides not only photosensitivity to UV modulation but also effective pump laser absorption and photoheating conversion. grating, which is cladding-removed by hydrofluoric acid, can detect tiny refractive index change resolution 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-4</sup> RIU scale....

10.1109/jphot.2021.3081675 article EN cc-by IEEE photonics journal 2021-05-18
Coming Soon ...