{"title":"Plasmonic Nanoantenna Array-Based Sensor for Air Parameters Monitoring Purpose","authors":"Akash Srivastava, Devendra Chack","doi":"10.1007/s11468-024-02504-0","DOIUrl":null,"url":null,"abstract":"<p>Plasmonic nanoantennas have earned significant acclaim for their remarkable ability to couple light from free space into sub-wavelength-sized structures and to enhance the confinement of the electric field. One of the most promising applications of plasmonics is refractive index sensing. To study the optical properties and near-field calculations of the nanoantenna, three-dimensional finite-difference time-domain (FDTD) simulations were conducted using commercially available Maxwell equation solvers, such as Lumerical software. A significant enhancement in electric field intensity and maximum absorption cross-section were observed when an array of plasmonic nanoantennas was used compared to a plasmonic nanoantenna dimer. The proposed device is used to sense changes in major air parameters such as carbon dioxide (CO<sub>2</sub>) gas concentration and atmospheric pressure. Sensitivities as high as 488 nm/RIU and 500 nm/RIU, respectively, were achieved after analyzing both cases.</p>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":null,"pages":null},"PeriodicalIF":3.3000,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasmonics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1007/s11468-024-02504-0","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Plasmonic nanoantennas have earned significant acclaim for their remarkable ability to couple light from free space into sub-wavelength-sized structures and to enhance the confinement of the electric field. One of the most promising applications of plasmonics is refractive index sensing. To study the optical properties and near-field calculations of the nanoantenna, three-dimensional finite-difference time-domain (FDTD) simulations were conducted using commercially available Maxwell equation solvers, such as Lumerical software. A significant enhancement in electric field intensity and maximum absorption cross-section were observed when an array of plasmonic nanoantennas was used compared to a plasmonic nanoantenna dimer. The proposed device is used to sense changes in major air parameters such as carbon dioxide (CO2) gas concentration and atmospheric pressure. Sensitivities as high as 488 nm/RIU and 500 nm/RIU, respectively, were achieved after analyzing both cases.
期刊介绍：
Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons.
Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.
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