Fano Resonance in Plasmonic Crystals Enables High-Sensitive Arsenite Detection

Abstract Fano resonance exhibiting characteristic asymmetric spectral line shape is a universal phenomenon, observed in diverse systems and is widely studied for its numerous potential applications. Here, we demonstrate a simple approach for high-sensitive arsenite detection using the changes in the spectral asymmetry of optical Fano resonance in precisely designed metamaterials, namely waveguided plasmonic crystals. For this purpose, we exploit selective binding of the toxic arsenite (As(III)) ions with optimized concentration of fluorescein-derived phenyl isothiocyanate molecules that are coated on top of a waveguided plasmonic crystal sample comprising of one dimensional periodic plasmonic gold grating on indium tin oxide waveguiding layer. The scattering spectra from the plasmonic crystal system with transverse magnetic (TM) polarization excitation show systematic changes in the Fano asymmetry parameter q with increasing concentration of arsenite, which is exploited for sensing arsenite down to a concentration of 1 ppm. Based on these results, we propose a robust plasmonic crystal metadevice that uses the polarized scattered intensities at two optimized wavelengths for high sensitive arsenite detection in natural aqueous environment..

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:17

Enthalten in:

Plasmonics - 17(2022), 5 vom: 07. Juli, Seite 2015-2021

Sprache:

Englisch

Beteiligte Personen:

Ray, Subir K. [VerfasserIn]
Samanta, Tapendu [VerfasserIn]
Guchhait, Shyamal [VerfasserIn]
A., Ajmal [VerfasserIn]
Mitra, Partha [VerfasserIn]
Shunmugam, Raja [VerfasserIn]
Ghosh, Nirmalya [VerfasserIn]

Links:

Volltext [lizenzpflichtig]

BKL:

33.68$jOberflächen$jDünne Schichten$jGrenzflächen$XPhysik

44.09$jMedizintechnik

51.45$jWerkstoffe mit besonderen Eigenschaften

Themen:

Arsenite detection
Fano resonance
Plasmonic crystal
Polarization metadevice

Anmerkungen:

© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022

doi:

10.1007/s11468-022-01687-8

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

OLC2132510679