Design of Infrared Plasma Absorber with High Refractive Index Sensitivity

Autor:	Yu Li, Keyi Ma, Shengxi Jiao
Rok vydání:	2021
Předmět:	Materials science business.industry Biophysics Resonance Metamaterial 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 010309 optics Full width at half maximum Wavelength 0103 physical sciences Optoelectronics Figure of merit Surface plasmon resonance 0210 nano-technology business Absorption (electromagnetic radiation) Refractive index Biotechnology
Zdroj:	Plasmonics. 16:1099-1106
ISSN:	1557-1963 1557-1955
DOI:	10.1007/s11468-021-01372-2
Popis:	Three layers of periodic artificial metamaterial sensing structure (including the upper metal particles, intermediate dielectric layer, and the lower reflective layer) with ultra-narrow band absorption were designed. The resonance characteristics and sensing properties were analyzed by the finite difference time domain (FDTD) method. The effect of localized surface plasmon resonance (LSPR) was obviously observed at the resonance wavelength of 911 nm, and it achieves nearly perfect absorption of exceeding 98% with a full width at half maximum (FWHM) of 3.5 nm. In addition, a wavelength sensitivity of 542 nm/RIU with a figure of merit (FOM) of 155 was obtained in the refractive index (RI) range from 1.00 to 1.35, which has a wide range of applications. The results show that the proposed structure has high absorption and RI sensitivity, which is suitable for bioengineering and medical detection.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f2e33d8c646ad3590ee974b7358d1c72 https://doi.org/10.1007/s11468-021-01372-2 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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