A5004290542- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Cognitive Radio Networks and Spectrum Sensing
- High voltage insulation and dielectric phenomena
- Acoustic Wave Resonator Technologies
- Advanced Computational Techniques and Applications
- Microwave and Dielectric Measurement Techniques
- Wireless Signal Modulation Classification
- Microwave Engineering and Waveguides
- Orbital Angular Momentum in Optics
- Indoor and Outdoor Localization Technologies
- Power Line Communications and Noise
- Microwave-Assisted Synthesis and Applications
- Advanced Algorithms and Applications
- Power Transformer Diagnostics and Insulation
- Human Mobility and Location-Based Analysis
- Anomaly Detection Techniques and Applications
- Wireless Communication Networks Research
- Thermal Radiation and Cooling Technologies
- Speech and Audio Processing
- Energy Efficient Wireless Sensor Networks
Yunnan University
2016-2025
Aviation General Hospital
2024
Alibaba Group (China)
2024
Zhengzhou University
2023-2024
Anhui Polytechnic University
2024
Hong Kong Metropolitan University
2021-2024
Guangzhou Electronic Technology (China)
2024
National Engineering Research Center of Electromagnetic Radiation Control Materials
2024
Beijing University of Civil Engineering and Architecture
2013-2023
Nanjing University of Science and Technology
2022-2023
The electromagnetic concentrators play an important role in the harnessing of light solar cells or similar devices, where high field intensities are required. material parameters for two-dimensional (2D) metamaterial-assisted with arbitrary geometries derived based on transformation-optical approach. Enhancements 2D concentrator have been shown by full-wave simulation. All theoretical and numerical results validate irregular cross section we developed.
Sensing is to date one of the most successful applications surface plasmons thanks exceptional field amplification and sensitivity these modes in metallic nanostructures. Here we introduce a promising detection scheme based on propagation strongly confined antibonding supported by graphene sandwiches. Instead measuring changes refractive index or enhancing restricted number molecular absorption lines, proposed device can recover an extended portion infrared spectrum molecule. Moreover,...
In this paper, the conversion of electrical tree to water is found in a cross-linked polyethylene (XLPE) cable, and possible mechanism presented. An electrical-tree initiation experiment was performed under AC voltages XLPE cable specimens. After that, 390-hour accelerated water-tree aging for specimens, trees at tips were observed slices by an optical microscope. Also, further understand confirm conversion, similar experiments performed, same phenomenon block Depending on geometric size...
As a backbone of deep learning models, convolutional neural networks (CNNs) are widely used in the field automatic modulation classification. Nevertheless, we speculate that forms signal samples make them inefficient for direct use as CNN input. In this letter, novel data preprocessing method is proposed to markedly improve CNN-based The benchmark dataset research well-known RadioML2016.10a dataset. experimental results show using gains approximately 10% accuracy improvement simple CNN....
Abstract Automatic modulation recognition plays an important role in wireless communication and radio regulation. Existing deep learning‐based automatic techniques perform well with large datasets high computational power but require significant resources for labelled data complex pre‐processing. This paper proposes a multi‐information fusion method few‐shot recognition, which involves converting I / Q signals into A P training combination of VGG LSTM network models. An ensemble knowledge...
Microgrids have become a hot topic driven by the dual pressures of environmental protection concerns and energy crisis. In this paper, challenge for distributed control modern electric grid incorporating clusters residential microgrids is elaborated hierarchical multi-agent system (MAS) proposed as solution. The issues how to realize MAS improve coordination strategies are discussed. Based on MATLAB ZEUS platforms, bilateral switching between grid-connected mode island performed under...
We demonstrate experimentally an efficient coherent rephasing scheme for the storage and recall of weak light pulses in inhomogeneously broadened optical transition a Pr(3+):YSO crystal at 2.1 K. Precise pumping using frequency stable (≈1 kHz linewidth) laser is employed to create highly controllable atomic comb structure. report single photon level retrieval efficiencies 25%, based on photon-echo-type reemission forward direction. The high efficiency mainly product our precise...
Electromagnetic cloak is a device which makes an object "invisible" for electromagnetic irradiation in certain frequency range. Material parameters the complementary medium-assisted external cylindrical with arbitrary cross section are derived based on combining concepts of media and transformation optics. It can make shape outside cloaking domain invisible, as long "antiobject" embedded layer. Moreover, we find that shape, size position dependent contour coordinate transformation. The...
Metamaterials have attracted a great deal of attention due to their intriguing properties, as well the large potential applications for designing functional devices. In this paper, we review current status metamaterial sensors, with an emphasis on evanescent wave amplification and accompanying local field enhancement characteristics. Examples sensors are given illustrate principle performance sensor. The paper concludes optimistic outlook regarding future
Abstract Cognitive radio (CR) is designed to implement dynamical spectrum sharing and reduce the negative effect of scarcity caused by exponential increase in number wireless devices. CR requires that sensing should detect licenced signals quickly accurately enable coexistence between primary secondary users without interference. However, with a low signal-to-noise ratio (SNR) still challenge systems. This paper proposes novel covariance matrix-based method using stochastic resonance (SR)...
This paper investigates the impact of health investment on household income distribution, drawing from data spanning over 10 years China Nutrition and Health Survey. The study aims to contribute literature by examining nuanced pathways through which influences distribution. Utilizing a rich dataset, rigorous empirical methods including quantile regression cross-sectional modeling are employed explore relationship between analysis reveals robust positive association both absolute relative...