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A Review of Tunable Electromagnetic Metamaterials With Anisotropic Liquid Crystals
- Source :
- Frontiers in Physics, Vol 9 (2021)
- Publication Year :
- 2021
- Publisher :
- Frontiers Media SA, 2021.
-
Abstract
- The performance of metamaterial is limited to a designed narrow band due to its resonant nature, it is highly desirable to incorporate active inclusions in metamaterials to extend the operation bandwidth. This review summarizes the development in realizing the tunability of electromagnetic response in metamaterials incorporated with nematic liquid crystal (LC). From rigorous comparison, it is found that the anisotropic property of nematic LC is essential in predicting the influence of LC molecular director orientation on the resonant frequency of metamaterials. By carefully designing the metamaterials and properly infiltrating LC, the operation frequency of single/double negative parameters of metamaterials can be dynamically modulated with remarkable red/blue-shift, depending on the LC molecular orientation angle. Moreover, the recent liquid crystal-based developments and novel applications are investigated and highlighted.
- Subjects :
- Materials science
Materials Science (miscellaneous)
Biophysics
Physics::Optics
General Physics and Astronomy
Tunable metamaterials
02 engineering and technology
Negative index metamaterials
negative index metamaterial
01 natural sciences
010309 optics
liquid crystals
tunable metamaterials
Liquid crystal
0103 physical sciences
Physical and Theoretical Chemistry
Anisotropy
Mathematical Physics
business.industry
Bandwidth (signal processing)
Electromagnetic response
reconfigurable metamaterials
Metamaterial
Physics::Classical Physics
021001 nanoscience & nanotechnology
lcsh:QC1-999
Narrow band
Optoelectronics
Liquid crystals reorientations
0210 nano-technology
business
lcsh:Physics
Subjects
Details
- ISSN :
- 2296424X
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Frontiers in Physics
- Accession number :
- edsair.doi.dedup.....43c63f2f8917ba77a72c52f2459d2345