Plasmon on spherical carbon shells

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    When applied to nonplanar surfaces, the concept of surface plasmons discovered by Ritchie is useful in interpreting spectroscopic and cohesive properties of nanoscopic objects. In this paper, we compare the surface plasmons on spherical shells of a homogeneous, isotropic material with those of a shell made of an anisotropic material arranged in concentric layers. As an example, spherical carbon shells having a graphitic, onion-like structure are shown to have plasmons which cause an ultraviolet Mie absorption distinct from that of planar graphite. The implication for the possible presence of graphitic onions in interstellar dust is discussed.
    langue originaleAnglais
    Pages (de - à)470-477
    Nombre de pages8
    journalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Numéro de publication3-4
    Les DOIs
    Etat de la publicationPublié - 1995

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