A5002623376- Metamaterials and Metasurfaces Applications
- 2D Materials and Applications
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Boron and Carbon Nanomaterials Research
- Plasmonic and Surface Plasmon Research
- Inorganic Chemistry and Materials
- Advanced ceramic materials synthesis
- Chalcogenide Semiconductor Thin Films
- High-pressure geophysics and materials
- Organic and Molecular Conductors Research
- Machine Learning in Materials Science
- Diamond and Carbon-based Materials Research
Sichuan Normal University
2017-2019
Southern University of Science and Technology
2019
Institute of Solid State Physics
2017
We demonstrate that multi-band coherent perfect absorption can be achieved at infrared frequencies by a metasurface in which four-sized columnar metal patches are separated dielectric layer unit cell. The bandwidth is enhanced three times compared with single-band while high absorbance maintained. polarization-independent and independently modulated each resonant frequency tuning the phase difference of two incident beams. Moreover, sensitive to radius patch, thus wide range obtained...
We propose a multi-band infrared coherent perfect absorber where four absorption peaks can be obtained for antisymmetrical inputs. The FWHM is nearly times larger than that of single band absorber. In addition, the absorptivity each peak independently tuned by phase modulation. Since only magnetic resonances in form catenary optical fields upper and lower dielectric layers excited symmetrical inputs, number will reduced half at this time. frequency under inputs flexibly selected from low to...
We propose that dual-band coherent perfect absorption in the infrared can be achieved a metasurface, which contains periodical symmetrically patterned elliptical graphene array on both sides of silicon dioxide film. The physical mechanism is major and minor axes disk have different widths produce resonances at frequencies. Based independent resonances, asymmetrically metasurface separately absorb light frequencies for TE TM polarizations, useful to detect polarization incident light. In...
X-ray diffraction (XRD) method and structural refinement were used to characterize the sample of [Formula: see text]-Si 3 N 4 . Rietveld analyses XRD data confirmed that belongs hexagonal crystal (space group P31c, No:159). The refined parameters are in agreement with available theoretical synchrotron radiation experimental results. Then, infrared (IR) spectra under 22 GPa investigated diamond anvil cell (DAC). According IR absorption at 296.3 K 2 hPa (Observation range from 400 cm[Formula:...