In the current landscape of photonic research and development, tunable metamaterials that exhibit exceptional light manipulation capabilities are the cornerstone of progress. In this paper, we present the concept and characteristics of a six-band rotationally symmetric tunable absorption film based on the unique properties of AlCuFe quasicrystals.
Quasicrystals, with their aperiodic but ordered atomic arrangement, offer unprecedented possibilities for manipulating electromagnetic waves. The use of AlCuFe as the base material offers additional advantages, including high chemical stability and relatively low cost. The six-band structure, achieved through carefully designed geometry, allows for efficient absorption in several discrete frequency ranges, expanding the functionality of the film for a variety of applications.
In this paper, a six-band, rotationally symmetric, tunable absorbing structure based on AlCuFe quasicrystals is presented. A feature of this structure is the symmetric excitation of the electric field, which has a positive effect on the polarization stability. Analysis of the relative impedance of the proposed absorbing structure, carried out using the parameter inversion method, demonstrates compliance with the theoretical principles of impedance matching. Variation of the physical parameters of the structure and adjustment of the Fermi energy make it possible to achieve a high degree of tunability of the absorbing properties. A study of the effect of changes in the refractive index of the environment shows that this structure is characterized by an exceptionally high sensitivity to changes in this parameter. Thus, the proposed absorbing structure has tunable parameters, is insensitive to polarization and demonstrates high performance characteristics, which opens up prospects for its application in various fields.
The rotational symmetry of the structure ensures isotropic optical properties, which is especially important for applications requiring polarization independence. Tunability is achieved by adjusting the geometric parameters of the quasicrystal lattice, such as the period, layer thickness and shape of the elements. This ability allows the absorption characteristics to be tailored to specific needs, making the film a versatile solution for a variety of applications.
The proposed six-band absorbing film has great potential in areas such as sensorics, spectroscopy and optical cloaking. Its unique properties, combined with the ability to fine-tune, make it an attractive platform for the development of advanced photonic devices. Further research and design optimization will certainly open up new horizons in the field of light control and expand the application possibilities of metamaterials.
Author: Wenxin Li, Feng Xu, Shubo Cheng, Wenxing Yang, Bin Liu, Mengsi Liu, Zao Yi, Bin Tang, Jing Chen, Tangyou Sun
Institute:
School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, Hubei 434023, China
College of Chemical Engineering and Materials Science, Guangzhou Normal University, Guangzhou 362000, China
Institute of Rural Revitalization, Linyi University, Linyi 276000, China
Joint Laboratory of Material Properties under Extreme Conditions, Tianfu Research Institute, State Key Laboratory of Clean Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
School of Microelectronics and Control Engineering, Changzhou University, Changzhou 213164, China
College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
Guangxi Key Laboratory of High-Precision Navigation Technology and Application, Guilin University of Electronic Technology, Guilin 541004, China