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Shapes matter: examining the optical response evolution in stretched aluminium nanoparticles via time-dependent density functional theory

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Abstract

Using first-principles time-dependent density functional theory calculations, we investigate the shape-anisotropy effects on the optical response of a spherical aluminium nanoparticle subjected to a stretching process in different directions. Progressively increased stretching in one direction resulted in prolate spheroid (nanorice) geometries and produced a couple of well-distinguishable dominant peaks together with some satellite peaks in the UV-visible region of the electromagnetic spectrum. On the other hand, progressively increased stretching in two directions caused multiple peaks to appear in the UV-visible region of the electromagnetic spectrum. We believe that our findings can be beneficial for the emerging and potentially far-reaching field of aluminum plasmonics.

Graphical abstract: Shapes matter: examining the optical response evolution in stretched aluminium nanoparticles via time-dependent density functional theory

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Publication details

The article was received on 21 Oct 2017, accepted on 30 Nov 2017 and first published on 30 Nov 2017


Article type: Communication
DOI: 10.1039/C7CP07151E
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
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    Shapes matter: examining the optical response evolution in stretched aluminium nanoparticles via time-dependent density functional theory

    J. H. Mokkath, Phys. Chem. Chem. Phys., 2018, Advance Article , DOI: 10.1039/C7CP07151E

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