ArticleMaterials (Basel, Switzerland)2020
A Narrow-Band Multi-Resonant Metamaterial in Near-IR.
Article in Materials (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Metamaterial absorber using cascaded ring resonators and optimization through machine learning for sensing applications.Scientific reports · 2025Article
- Tailored metal-insulator-metal multilayer design for perfect ir absorption at desired wavelengths in stealth systems.Scientific reports · 2025Article
- Objective-Free Ultrasensitive Biosensing on Large-Area Metamaterial Surfaces in the Near-IR.ACS applied materials & interfaces · 2024Article
- Bio-Inspired Nanomembranes as Building Blocks for Nanophotonics, Plasmonics and Metamaterials.Biomimetics (Basel, Switzerland) · 2022Review
- Experimental Study of a Quad-Band Metamaterial-Based Plasmonic Perfect Absorber as a Biosensor.Molecules (Basel, Switzerland) · 2022Article
- Demonstration of Thermally Tunable Multi-Band and Ultra-Broadband Metamaterial Absorbers Maintaining High Efficiency during Tuning Process.Materials (Basel, Switzerland) · 2021Article
- A wide-angle and TE/TM polarization-insensitive terahertz metamaterial near-perfect absorber based on a multi-layer plasmonic structure.Nanoscale advances · 2021Article
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2 authors.
Funding
Abstract
We theoretically investigate a multi-resonant plasmonic metamaterial perfect absorber operating between 600 and 950 nm wavelengths. The presented device generates 100% absorption at two resonance wavelengths and delivers an ultra-narrow band (sub-20 nm) and high quality factor (Q=44) resonance. The studied perfect absorber is a metal-insulator-metal configuration where a thin MgF2 spacer is sandwiched between an optically thick gold layer and uniformly patterned gold circular nanodisc antennas. The localized and propagating nature of the plasmonic resonances are characterized and confirmed theoretically. The origin of the perfect absorption is investigated using the impedance matching and critical coupling phenomenon. We calculate the effective impedance of the perfect absorber and confirm the matching with the free space impedance. We also investigate the scattering properties of the top antenna layer and confirm the minimized reflection at resonance wavelengths by calculating the absorption and scattering cross sections. The excitation of plasmonic resonances boost the near-field intensity by three orders of magnitude which enhances the interaction between the metamaterial surface and the incident energy. The refractive index sensitivity of the perfect absorber could go as high as S=500 nm/RIU. The presented optical characteristics make the proposed narrow-band multi-resonant perfect absorber a favorable platform for biosensing and contrast agent based bioimaging.
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