Metamaterial plasmonic absorber for reducing the spectral shift between near- and far-field responses in surface-enhanced spectroscopy applications

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dc.authoridAslan, Erdem/0000-0001-6829-9000
dc.contributor.authorAsian, Erdem
dc.contributor.authorAslan, Ekin
dc.contributor.authorTurkmen, Mustafa
dc.contributor.authorSaracoglu, Omer Galip
dc.date.accessioned2025-02-24T17:18:41Z
dc.date.available2025-02-24T17:18:41Z
dc.date.issued2017
dc.departmentFakülteler, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümü
dc.description.abstractThe spectral shift between near- and far-field responses of the plasmonic nanoantennas has negative effects on the performance of surface-enhanced spectroscopy measurements. In order to reduce these effects, we propose use of the plasmonic absorber (PA) concept that promises lower spectral-shift between the near- and far-field responses. In this context, we present the design, characterization and experimental realization of a novel PA structure which utilizes hexagonally arranged nanoantennas operating in the mid-infrared regime. Additionally, we analyze the PA device numerically and experimentally to investigate tunability of resonant modes. To reveal the absorption mechanism, we investigate the near-field distribution maps in addition to the charge and current density distributions. With the aim of comparing the proposed PA device with the conventional particle-based nanoantenna according to the amount of spectral shift between the near- and far-field peaks, we present the near- and far-field spectra of each configuration and show that PA structure exhibits significantly lower spectral-shift. Finally, we present the effect of reduced spectral-shift on the surface-enhanced infrared absorption spectroscopy through the simulations for the detection of the molecular absorption mode of a polymer and compare with the results of particle nanoantenna configuration. (C) 2017 Elsevier B.V. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey [TUBITAK-113E277, 2214-A]
dc.description.sponsorshipThe work described in this paper is supported by The Scientific and Technological Research Council of Turkey (Project No: TUBITAK-113E277). Erdem Asian and Ekin Asian acknowledge the fellowship grants supported by The Scientific and Technological Research Council of Turkey (Program Code: 2214-A). Erdem Asian and Ekin Asian gratefully thank to Prof. Luca Dal Negro and Prof. Shyamsunder Erramilli for hosting them in Photonics Center of Boston University.
dc.identifier.doi10.1016/j.sna.2017.10.006
dc.identifier.endpage69
dc.identifier.issn0924-4247
dc.identifier.scopus2-s2.0-85030755469
dc.identifier.scopusqualityQ1
dc.identifier.startpage60
dc.identifier.urihttps://doi.org/10.1016/j.sna.2017.10.006
dc.identifier.urihttps://hdl.handle.net/20.500.14440/801
dc.identifier.volume267
dc.identifier.wosWOS:000418313800008
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.ispartofSensors and Actuators A-Physical
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250201
dc.subjectNanophotonics
dc.subjectMetamaterials
dc.subjectPlasmonic absorbers
dc.subjectMolecular sensing
dc.subjectSurface enhanced infrared absorption spectroscopy (SEIRAS)
dc.titleMetamaterial plasmonic absorber for reducing the spectral shift between near- and far-field responses in surface-enhanced spectroscopy applications
dc.typeArticle

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