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Nanostructured Hyperbolic Metamaterials for Magnetoplasmonic Sensors

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Author(s):
Diaz-Valencia, Brayan F. ; Porras-Montenegro, Nelson ; Oliveira Jr, Osvaldo N. ; Mejia-Salazar, Jorge Ricardo
Total Authors: 4
Document type: Journal article
Source: ACS APPLIED NANO MATERIALS; v. 5, n. 2, p. 5-pg., 2022-01-31.
Abstract

We demonstrate numerically a concept for highly integrated magnetoplasmonic biosensors made with nanostruc-tured magnetooptical (MO) hyperbolic metamaterials (HMMs). The concept is based on the use of enhanced amplitudes of ultranarrow peaks of the transverse magnetooptical Kerr effect (TMOKE). In contrast to conventional magnetoplasmonic trans-ducers that employ wide surface plasmon resonances, we use bulk plasmon polariton modes in HMMs. In sensing through changes in the refractive index of water, a figure of merit on the order of 8 x 10(2) was observed, to be compared with 590 for non-MO HMMs. This allows for improved resolution detection of low-molecular-weight analytes at concentrations on the order of picomolar. (AU)

FAPESP's process: 21/06946-0 - Reconfigurable intelligent surface aided communications for 6G and beyond
Grantee:Rausley Adriano Amaral de Souza
Support Opportunities: Regular Research Grants
FAPESP's process: 18/22214-6 - Towards a convergence of technologies: from sensing and biosensing to information visualization and machine learning for data analysis in clinical diagnosis
Grantee:Osvaldo Novais de Oliveira Junior
Support Opportunities: Research Projects - Thematic Grants