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Infrared Lightwave Memory-Resident Manipulation and Absorption Based on Spatial Electromagnetic Wavefield Excitation and Resonant Accumulation by GdFe-Based Nanocavity-Shaped Metasurfaces.
Chen, Cheng; Zhang, Chuang; Liu, Taige; Wang, Zhe; Shi, Jiashuo; Zhang, Xinyu.
Affiliation
  • Chen C; National Key Laboratory of Science and Technology on Multispectral Information Processing, Huazhong University of Science and Technology, Wuhan 430074, China.
  • Zhang C; School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan 430074, China.
  • Liu T; National Key Laboratory of Science and Technology on Multispectral Information Processing, Huazhong University of Science and Technology, Wuhan 430074, China.
  • Wang Z; School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan 430074, China.
  • Shi J; National Key Laboratory of Science and Technology on Multispectral Information Processing, Huazhong University of Science and Technology, Wuhan 430074, China.
  • Zhang X; School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan 430074, China.
Nanomaterials (Basel) ; 14(14)2024 Jul 20.
Article in En | MEDLINE | ID: mdl-39057905
ABSTRACT
An arrayed nanocavity-shaped architecture consisting of the key GdFe film and SiO2 dielectric layer is constructed, leading to an efficient infrared (IR) absorption metasurface. By carefully designing and optimizing the film system configuration and the surface layout with needed geometry, a desirable IR radiation absorption according to the spatial magnetic plasmon modes is realized experimentally. The simulations and measurements demonstrate that GdFe-based nanocavity-shaped metasurfaces can be used to achieve an average IR absorption of ~81% in a wide wavelength range of 3-14 µm. A type of the patterned GdFe-based nanocavity-shaped metasurface is further proposed for exciting relatively strong spatial electromagnetic wavefields confined by a patterned nanocavity array based on the joint action of the surface oscillated net charges over the charged metallic films and the surface conductive currents including equivalent eddy currents surrounding the layered GdFe and SiO2 materials. Intensive IR absorption can be attributed to a spatial electromagnetic wavefield excitation and resonant accumulation or memory residence according to the GdFe-based nanocavity-shaped array formed. Our research provides a potential clue for efficiently responding and manipulating and storing incident IR radiation mainly based on the excitation and resonant accumulation of spatial magnetic plasmons.
Key words

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nanomaterials (Basel) Year: 2024 Document type: Article Affiliation country: Country of publication:

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nanomaterials (Basel) Year: 2024 Document type: Article Affiliation country: Country of publication: