A5012896163- Metamaterials and Metasurfaces Applications
- Plasmonic and Surface Plasmon Research
- Terahertz technology and applications
- Thermal Radiation and Cooling Technologies
- Advanced Antenna and Metasurface Technologies
- Video Analysis and Summarization
- Non-Invasive Vital Sign Monitoring
- Anomaly Detection Techniques and Applications
- Nanowire Synthesis and Applications
- Advanced Sensor and Energy Harvesting Materials
- Sports Analytics and Performance
- Numerical methods in inverse problems
- Higher Education and Teaching Methods
- Sparse and Compressive Sensing Techniques
- Educational Technology and Assessment
- Advanced biosensing and bioanalysis techniques
- Advanced Decision-Making Techniques
- Animal Vocal Communication and Behavior
- Photonic and Optical Devices
- Advanced Algorithms and Applications
- Power Quality and Harmonics
- Evaluation Methods in Various Fields
- Image and Signal Denoising Methods
- Human Pose and Action Recognition
- Millimeter-Wave Propagation and Modeling
Wuxi Institute of Technology
2024-2025
China University of Petroleum, East China
2024
China Energy Engineering Corporation (China)
2024
Xi'an University of Technology
2020-2022
Lishui University
2008
With the rapid advances in functional optoelectronics, research on carbon-based materials and devices has become increasingly important at terahertz frequency range owing to their advantages terms of weight, cost, freely bendable flexibility. Here, we report an effective material device design for a plasmonic metasurface sensor (PMS) based carbon nanotubes (CNTs). CNT metasurfaces silicon wafers have been prepared obvious resonant transmission peaks are observed experimentally. The enhanced...
Perfect metasurface absorbers play a significant role in imaging, detecting, and manipulating terahertz radiation. We utilize all-dielectric gratings to demonstrate tunable multi-band absorption the region. Simulation reveals quad-band tri-band from 0.2 2.5 THz for different grating depths. Coupled-mode theory can explain phenomenon. The amplitude be precisely controlled by changing pump beam fluence. Furthermore, resonant frequency is sensitive medium’s refractive index, suggesting absorber...
Terahertz metamaterial plays a significant role in the development of imaging, sensing, and communications. The function conventional terahertz metamaterials was fixed after fabrication. They can only achieve single do not have adjustable characteristics, which greatly limits scalability practical application metamaterial. Here, we propose vanadium dioxide-based device, is switchable between being transmitter an absorber. transmission absorption characteristics temperature tunable properties...
The promising prospect of a terahertz metasurface in sensing and detection applications has attracted increasing attention because its ability to overcome the classical diffraction limit enhancement field intensity. In this work, novel scheme based on an all-silicon plasmon is proposed experimentally demonstrated be highly sensitive biosensor for Bacillus thuringiensis Cry1Ac toxin. regression coefficients between protein concentrations spectral resonance intensity frequency were 0.8988...
In this work, we numerically demonstrated a single narrow band THz absorber based on cylindrically shaped periodical p-type doped silicon with excellent attributes, including polarization insensitivity and optical tunability. Good absorption characteristics were at 0.57 an of nearly 99.75% quality factor 11.278. Furthermore, its absorbance could be flexibly tuned from above 99% to less than 35% by changing the pump beam fluence 0 µJ/cm2 3000 µJ/cm2. The tunability may find potential...
Carbon-based metamaterials are expected to lead biological and chemical sensing because of their fast electron transfer rate, good biocompatibility, high absorption ratios. In this work, we integrate carbon nanotubes metasurface (CM) microfluidic channel (MC) for a composite terahertz (THz) (CMMC). The properties performance the proposed have been studied. It is observed that nearly 71.8% at 0.96 THz 92.4% 1.65 THz, respectively. variation response with refractive index analytes CMMC...
Based on the waveform characteristic of virtual value by dq conversion, Wavelet Analysis and FFT, seven types power quality disturbances are layered-recognized. Firstly, according to size voltage value, will be divided into two types, first type includes sag, swell interruption. The second rest disturbances. Secondly, wavelet analysis carried out type, transient pulse low frequency oscillation identified high coefficient then they separated number zero-crossing points. Finally, as far...
Metamaterials present revolutionary routes to manipulate the behavior of electromagnetic waves. The well-designed metamaterial can exhibit exotic functionalities, such as perfect absorption, holography, beam steering, optical nonlinear generation, and various functional interfaces. However, those designs currently rely on trial-and-error case-by-case numerical simulations achieve target responses, which usually requires huge computing resources expertise related metamaterials. In this study,...
Conventional metamaterial design mainly relies on manual trial‐and‐error and optimization to achieve target electromagnetic responses. When faced with high‐degree‐of‐freedom application design, it is impossible an efficient overall of massive structural units. Herein, a new approach for using ensemble learning objective‐driven easy‐to‐process design. From the perspective data learners, reduce complexity preprocessing accurate closed‐loop by improving performance model. The proposed framework...
Under the guidance of Weiner's attribution theory, author investigated and analyzed college-students' computer rank examination in Zhejiang Province through interview questionnaire survey. Results showed that there were defects student's attitudes as they regarded external factors more important ignored internal factors. In examination, such sex major had no effect on success failure while factor exam category remarkably distinct. High their expectations for following exam, those who failed...
An optical tunable multi-band all-dielectric metamaterials absorber has been proposed in this paper. The was made of one-dimensional gratings. can achieve four-band and tri-band absorption with different grating depth. All the peak absorbance is higher than 90% at resonance frequencies quality factor (Q) reach to 12.6. Otherwise, selective be achieved by adjusting incident pump beam. demonstrated tunability may find potential applications dynamic functional THz devices. Finally, a great...
Perfect absorption based on metamaterials at terahertz frequencies range has attracted a great deal of interest in the field sensing, imaging, bolometers and stealth technology. This review is focused presenting several recently developed absorbers all-silicon metamaterials, such as single-band, dual-band, multi-band broadband absorbers. The partial physical mechanisms optical tunability corresponding to are also reported. Furthermore, presented can be used detect concentration trace...
We have investigated the interaction of surface plasmon polariton (SPP) mode with dipole at terahertz perfect metamaterial absorber (PMA) consisted a metasurface layer, dielectric spacer and metallic ground. The dependence SPP modes generated by PMA on lattice constant unit cell was investigated. Also, high-quality-factor resonance is observed, which has been subject numerous investigations since an elevated quality factor highly desirable for practical application.
The SoccerNet 2023 challenges were the third annual video understanding organized by team. For this edition, composed of seven vision-based tasks split into three main themes. first theme, broadcast understanding, is high-level related to describing events occurring in broadcasts: (1) action spotting, focusing on retrieving all timestamps global actions soccer, (2) ball soccer change state, and (3) dense captioning, with natural language anchored timestamps. second field relates single task...
A resonator with high Q factors for the terahertz region is proposed, which can excite bound state in continuum by introducing perturbation to metamaterial. The sensing performance of designed metamaterial show that sensitivity and Figure merit (FoM) reach 528 GHz/RIU 939, respectively.
We present carbon nanotube films metamaterials exhibiting extraordinary transmission at the resonant peaks in THz wave region. Experiment and theory reveal that originated from surface plasmon polaritons resonance, which can be changed through altering lattice constant of array. The proposed metasurfaces were demonstrated to efficient sensor for pesticides concentrate.
A biosensor based on all-dielectric terahertz metasurface for bacillus thuringiensis (Bt) Cry1Ac protein sensing was proposed and experimentally demonstrated. The resonance frequency amplitude of the devices treated with different concentrations Bt solution satified a linear relationship concentration, which is promised to have wide application prospect in biosensing thereby, has attracted increasing attention.