A5040031438- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Orbital Angular Momentum in Optics
- Plasmonic and Surface Plasmon Research
- Thermal Radiation and Cooling Technologies
- Microfluidic and Bio-sensing Technologies
- Near-Field Optical Microscopy
- Digital Holography and Microscopy
- Antenna Design and Analysis
- Optical Coatings and Gratings
- Transition Metal Oxide Nanomaterials
- Optical measurement and interference techniques
- Photonic Crystals and Applications
- Solar Thermal and Photovoltaic Systems
- Photonic and Optical Devices
- Sperm and Testicular Function
- Optical Polarization and Ellipsometry
- Terahertz technology and applications
- Optical Wireless Communication Technologies
- solar cell performance optimization
- TiO2 Photocatalysis and Solar Cells
- Energy Harvesting in Wireless Networks
- Advanced Photocatalysis Techniques
- Advanced Optical Imaging Technologies
- Nanowire Synthesis and Applications
Yangtze University
2017-2025
Jingzhou Central Hospital
2020
Jingdong (China)
2019
Central South University
2015-2017
The paper proposes an ultra-narrow band graphene refractive index sensor, consisting of a patterned layer on the top, dielectric SiO2 in middle, and bottom Au layer. absorption sensor achieves efficiency 99.41% 99.22% at 5.664 THz 8.062 THz, with bandwidths 0.0171 0.0152 respectively. Compared noble metal absorbers, our absorber can achieve tunability by adjusting Fermi level relaxation time geometry unchanged, which greatly saves manufacturing cost. results show that has properties...
A four-band terahertz tunable narrow-band perfect absorber based on a bulk Dirac semi-metallic (BDS) metamaterial with microstructure is designed. The three-layer structure of this from top to bottom the layer, dielectric layer and metal reflector layer. Based Finite Element Method (FEM), we use simulation software CST STUDIO SUITE simulate absorption characteristics designed absorber. results show that rate over 93% at frequencies 1.22, 1.822, 2.148 2.476 THz, three them have achieved more...
We find that the solar energy absorption efficiency is high under a spectrum at AM 1.5, and it also has polarization-independence incidence insensitivity. Our absorber widest operating band compared with similar absorbers reported previously.
Abstract In this paper, an active tunable terahertz bandwidth absorber based on single-layer graphene is proposed, which consists of a layer, photo crystal plate, and gold substrate. When the Fermi energy ( E f ) 1.5 eV, shows high absorption in range 3.7 THz–8 THz, total rate 96.8%. By exploring mechanism absorber, excellent physical regulation. The also good adjustability by changing graphene. This means that exhibits tunability adjusting parameters absorber. Meanwhile, polarization...
Perfect metamaterial absorbers have attracted researchers’ attention in solar energy harvesting and utilization. An ideal absorber should provide high absorption, be ultra-wideband, insensitive to polarization incident angles, which brings challenges research. In this paper, we proposed optimized an ultra-wideband based on Ti-Al2O3 cross elliptical disk arrays obtain the absorption of energy. The addition a cavity greatly improves energy-absorbing effect operating band, has research value....
With the development of science and technology, intermediate infrared technology has gained more attention in recent years. In research described this paper, a tunable broadband absorber based on Dirac semimetal with layered resonant structure was designed, which could achieve high absorption (more than 0.9) about 8.7 THz frequency range 18-28 THz. It confirmed that comes from strong resonance between layers, localised surface plasmon. The gold substrate, is composed three layers optical...
Abstract This study introduces an innovative dual-tunable absorption film with the capability to switch between ultra-wideband and narrowband absorption. By manipulating temperature, can achieve multi-band within 30–45 THz range or spanning 30–130 THz, rate exceeding 0.9. Furthermore, structural parameters of are optimized using particle swarm optimization (PSO) algorithm ensure optimal response. The response is primarily attributed coupling guided-mode resonance local surface plasmon...
This article proposes a temperature-controlled absorber based on VO2, which consists of five layers: disk-shaped VO2 layer array, dielectric layer, circular hole SiO2 and gold substrate from top to bottom. We optimized the thickness other four layers absorber, except for using PSO. After ten iterations, we determined that optimal parameters top-to-bottom four-layer thicknesses were 0.183 μm, 0.452 0.557 μm 1.994 μm. At this point, our reached absorption parameters, plotted spectrum under...
A thermally tunable terahertz window based on the combination of a metamaterial and phase change material VO2 is proposed. The composed two vanadium oxide films with SiO2 layer sandwiched between them. thermochromic properties are key to functionality window. By controlling temperature around room 300 K, our can be used as smart it able regulate both absorption transmission external waves in response changes temperature. absorbance regulated by more than 90% transmittance 80%. switching...