Probing dipole and quadrupole resonance mode in non-plasmonic nanowire using Raman spectroscopy

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dc.contributor.author Raha, Sreyan
dc.contributor.author Mitra, Sreemanta
dc.contributor.author Kumar Mondal, Prasanna
dc.contributor.author Biswas, Subhajit
dc.contributor.author Holmes, Justin D.
dc.contributor.author Singha, Achintya
dc.date.accessioned 2020-09-04T14:56:12Z
dc.date.available 2020-09-04T14:56:12Z
dc.date.issued 2020-07-24
dc.identifier.citation Raha, S., Mitra, S., Kumar Mondal, P., Biswas, S., D Holmes, J. and Singha, A. (2020) 'Probing dipole and quadrupole resonance mode in non-plasmonic nanowire using Raman spectroscopy', Nanotechnology, 31(42), 425201 (6 pp). doi: 10.1088/1361-6528/ab9cf9 en
dc.identifier.volume 31 en
dc.identifier.issued 42 en
dc.identifier.startpage 1 en
dc.identifier.endpage 6 en
dc.identifier.issn 0957-4484
dc.identifier.uri http://hdl.handle.net/10468/10475
dc.identifier.doi 10.1088/1361-6528/ab9cf9 en
dc.description.abstract Electric field enhancement in semiconductor nanostructures offers a possibility to find an alternative to the metallic particles which is well known for tuning the light-matter interaction due to its strong polarizability and size-dependent surface plasmon resonance energy. Raman spectroscopy is a powerful technique to monitor the electric field as its scattering depends on the electromagnetic eigenmode of the particle. Here, we observe enhanced polarized Raman scattering from germanium nanowires of different diameters. The incident electromagnetic radiation creates a distribution of the internal electric field inside the naowires which can be enhanced by manipulating the nanowire diameter, the incident electric field and its polarization. Our estimation of the enhancement factor, including its dependence on nanowire diameter, agrees well with the Mie theory for an infinite cylinder. Furthermore, depending on diameter of nanowire and wavelength of incident radiation, polarized Raman study shows dipolar (antenna effect) and quadrupolar resonances, which has never been observed in germanium nanowire. We attempt to understand this polarized Raman behavior using COMSOL Multiphysics simulation, which suggests that the pattern observed is due to photon confinement within the nanowires. Thus, the light scattering direction can be toggled by tuning the polarization of incident excitation and diameter of non plasmonic nanowire. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher IOP Publishing en
dc.relation.uri https://iopscience.iop.org/article/10.1088/1361-6528/ab9cf9
dc.rights © 2020 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article accepted for publication in Nanotechnology. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1361-6528/ab9cf9 As the Version of Record of this article has been published on a subscription basis, this Accepted Manuscript will be available for reuse under a CC BY-NC-ND 3.0 licence after a 12 month embargo period. en
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/3.0/ en
dc.subject Single molecule detection en
dc.subject Semiconductor nanowires en
dc.subject Silicon en
dc.subject Scattering en
dc.subject Nanoparticles en
dc.subject Germanium en
dc.subject Phonon en
dc.subject Electric field enhancement en
dc.subject Polarized raman scattering en
dc.subject Dipolar and quadrupolar resonances en
dc.subject Non-plasmonic nanowire en
dc.title Probing dipole and quadrupole resonance mode in non-plasmonic nanowire using Raman spectroscopy en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Justin D. Holmes, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: j.holmes@ucc.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 12 months after publication by request of the publisher. en
dc.check.date 2021-07-24
dc.date.updated 2020-09-02T14:52:17Z
dc.description.version Accepted Version en
dc.internal.rssid 532870305
dc.internal.wokid WOS:000556856100001
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Nanotechnology en
dc.internal.copyrightchecked No
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress j.holmes@ucc.ie en
dc.internal.IRISemailaddress s.biswas@ucc.ie en
dc.identifier.articleid 425201 en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Investigator Programme/14/IA/2513/IE/Silicon Compatible, Direct Band-Gap Nanowire Materials For Beyond-CMOS Devices/ en


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© 2020 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article accepted for publication in Nanotechnology. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1361-6528/ab9cf9 As the Version of Record of this article has been published on a subscription basis, this Accepted Manuscript will be available for reuse under a CC BY-NC-ND 3.0 licence after a 12 month embargo period. Except where otherwise noted, this item's license is described as © 2020 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article accepted for publication in Nanotechnology. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1361-6528/ab9cf9 As the Version of Record of this article has been published on a subscription basis, this Accepted Manuscript will be available for reuse under a CC BY-NC-ND 3.0 licence after a 12 month embargo period.
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