Effects of damping constant of electron and size on quantum-based frequency-dependent dielectric function of small metallic plasmonic devices

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dc.contributor.authorAkinyemi, Lateefen_ZA
dc.contributor.authorOladejo, Sundayen_ZA
dc.contributor.authorEkwe, Stephenen_ZA
dc.contributor.authorImoize, Agbotiname Luckyen_ZA
dc.contributor.authorOjo, Stephen Abiodunen_ZA
dc.date.accessioned2024-03-01T10:09:39Z
dc.date.available2024-03-01T10:09:39Z
dc.date.issued2022-07en_ZA
dc.descriptionThe original publication is available at: https://www.sciencedirect.comen_ZA
dc.description.abstractElectron surface dissipation and quantum-limited size tend to control the material properties of exterior plasmon oscillation as the size of metal nanoparticles goes into the nanoscale domain. The need to examine this characteristic behaviour and its potential becomes imperative. This study explores the effects of the damping constant of electrons and size quantum-based frequency-dependent dielectric function (FDDF) of small metallic materials using an elementary model of electrons in a confined box. The frequency-dependent dielectric function is employed to study quantum size impacts and damping constant in the optical spectra region. The quantum amended frequency-dependent dielectric function and the absorbing spectra of silver-cube geometry for different sizes by adding damping constant and without damping constant are critically examined. The findings reveal that when the damping constant effect is absent, the multiple crests emerge for the quantum-amended frequency-dependent dielectric function and absorbing spectra of the metallic materials, highlighting the electronic discretization levels in the tiny quantum-limited structure. While the damping constant is included, the multiple summits are hidden and vanish owing to a considerable widening of the structures independently. The change in the numerical results from the quantum case to the classical case for growing widths is further illustrated for both cases. The numerical results enhance our knowledge of damping constant dissipation and quantum limited-size impact in small-scaled plasmonic devices.en_ZA
dc.description.urihttps://www.sciencedirect.com/science/article/pii/S2468227622001491en_ZA
dc.description.versionPublisher’s versionen_ZA
dc.format.extent9 pagesen_ZA
dc.identifier.citationAkinyemi, L. et al. 2022. Effects of Damping Constant of Electron and Size on Quantum-Based Frequency-dependent Dielectric Function of Small Metallic Plasmonic Devices. Scientific African 16(2022):9 pages. doi.10.1016/j.sciaf.2022.e01242en_ZA
dc.identifier.doi10.1016/j.sciaf.2022.e01242en_ZA
dc.identifier.issn2468-2276 (online)en_ZA
dc.identifier.urihttps://scholar.sun.ac.za/handle/10019.1/129492
dc.language.isoen_ZA en_ZA
dc.publisherElsevier B.Ven_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.titleEffects of damping constant of electron and size on quantum-based frequency-dependent dielectric function of small metallic plasmonic devicesen_ZA
dc.typeArticleen_ZA
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