A5059521885- Plasmonic and Surface Plasmon Research
- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Photonic and Optical Devices
- Microwave Engineering and Waveguides
- Photonic Crystals and Applications
- Quantum optics and atomic interactions
- Terahertz technology and applications
- Higher Education and Teaching Methods
- Energy Harvesting in Wireless Networks
- IoT-based Smart Home Systems
- AI in cancer detection
- Radiomics and Machine Learning in Medical Imaging
- Graphene research and applications
- Antenna Design and Optimization
- Experimental Learning in Engineering
- Wireless Body Area Networks
- Advanced Wireless Communication Techniques
- Error Correcting Code Techniques
- Innovative Educational Techniques
- Advanced Fiber Optic Sensors
- Embedded Systems and FPGA Design
- Optical Coatings and Gratings
- Thermal Radiation and Cooling Technologies
China Jiliang University
2016-2025
Bridge University
2023
Zhejiang University of Technology
2023
Institute of Information Engineering
2021
Technical University of Denmark
2016-2018
In this paper we propose a graphene-based metasurface structure that can exhibit tunable electromagnetically-induced-transparency-like (EIT) spectral response at mid-infrared frequencies. The is composed of two subwavelength mono-layer graphene nano-disks coupled with nano-strip. We show the coupling nano-disks' dipole resonance quadrupole nano-strip create split resonances transparency window in between any desired center frequency within wide range. such an EIT-like also be dynamically...
Cervical cancer is a worldwide public health problem with high rate of illness and mortality among women. In this study, we proposed novel framework based on Faster RCNN-FPN architecture for the detection abnormal cervical cells in cytology images from screening test. We extended model by infusing deformable convolution layers into feature pyramid network (FPN) to improve scalability. Furthermore, introduced global contextual aware module alongside Region Proposal Network (RPN) enhance...
Tunable terahertz absorbers composed of periodically cross-shaped graphene arrays with the ability to achieve near-unity absorbance are proposed and studied. Our results demonstrate that bandwidth absorption rate above 90% can reach up 1.13 by use a single layer arrays. By simply stacking double careful design, working be broadened compared single-layer graphene-based absorber. The have properties being polarization insensitive having large angle tolerance, tunability Fermi level in allows...
In this paper, a graphene-vanadium dioxide-based reconfigurable metasurface unit structure is proposed. Using the change at graphene Fermi energy level on surface of to satisfy 2-bit coding condition, four reflection units with phase difference 90 ∘ can be discovered. The modulating impact multi-beam wave 1-bit then confirmed. Then we study control single-beam reflected by metasurfaces combined convolution theorem in mode. Finally, when vanadium dioxide an insulating also transformed into...
In this paper, we present a novel tunable graphene coding metasurface structure using circular patch on an uneven substrate. By changing the Fermi level of or thickness substrate, can achieve obvious phase variation. Firstly, put forward two construction methods 1-bit based mechanism. The first method is to change substrate when levels two-unit cells are same, so that exhibit different digital states '0' and '1'. Furthermore, working frequency band in real-time by switching from 0.05 eV 0.85...
Reducing radiative losses for a high quality factor resonance based on the concept of nonradiative states including anapole mode and bound in continuum has been attracting extensive attention. However, is obtained at expense its modulation depth. Here, an asymmetric metasurfaces structure consisted silicon double D-shaped resonator arrays that can support both two modes terahertz band proposed, which not only ultrahigh but also near-unity A derived from with stronger electromagnetic field...
In this paper, we propose a substrate-integrated waveguide (SIW) antenna with frequency switching capabilities for unmanned aerial vehicle (UAV) detection applications. This features T-shaped slot on its top surface that excites the quarter-TE110 mode to extend bandwidth. Based configuration, three PIN diodes connect patch metal layer, enabling switch frequencies dynamically by adjusting states of these diodes. Experimental results demonstrate when are in OFF state, achieves bandwidths...
"Just Accepted" papers have undergone full peer review and been accepted for publication in Radiology: Artificial Intelligence. This article will undergo copyediting, layout, proof before it is published its final version. Please note that during production of the copyedited article, errors may be discovered which could affect content. Purpose To develop a methodology creating pseudo-contrast-enhanced US (CEUS) using an enhanced generative adversarial network evaluate ability to assess tumor...
We propose a difunctional tunable broadband absorber/reflector consisting of periodic cross-shaped graphene array and vanadium dioxide (VO2) layer. When VO2 reflects the properties metal, proposed dual-function device is used as reflector; when nature dielectric, will be an absorber. The simulation results indicate that more than 90% absorption bandwidth can available in absorber frequency range 56.1-59.0 THz, up to 100%. Moreover, over 80% achieved 88.5 90.2 THz. In addition, metamaterial...
In this paper, a polarization-insensitive sensor based on graphene electromagnetically induced transparency (EIT) is proposed. The device consists of two orthogonal T-shaped structures. This resonator produces transparent windows that largely overlap under x and y polarizations, the results demonstrate its good polarization insensitivity. can accomplish detection performance with sensitivity higher than 4960 nm/RIU figure merit (FOM) greater 11.4. Meanwhile, when Fermi energy level changes...
Abstract In this paper, we describe a new approach for constructing broad-band tunable rejection filter based on reconfigurable spoof surface plasmon polaritons (SSPP) whose center frequency can be tuned by altering the capacitance of varactor diode. The structure is composed SSPP waveguide with double split-rings. We have analyzed and discussed dispersion characteristics unit S-parameters filter. filter’s band in real-time within range 6.4 GHz–10.2 GHz, strength reach positive effect,...
Pesticides in soil are continuously one of the most studied analytes due to their environmental and human health effects. Thus detection pesticides is an important means control assess quality. Here, we theoretically experimentally present a novel method for determination imidacloprid by using metasurface sensor operating at terahertz frequencies. The shows resonance peak 880 GHz electric field strongly localized concentrated gap split I-shaped resonator. complex refractive index that...
The infrared absorption spectrum due to structural vibrations in molecules has been widely used resolve chemical identification.However, this method is limited by the weak molecule-light interaction.Graphene plasmon, having strong confinement and large field enhancement, provides a promising way increase their interactions.Here we propose tunable hybridization-induced graphene nanostructures for sensing application.Our results reveal that when symmetry of disk broken introducing small...