Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/12484
ชื่อเรื่อง: Localized surface plasmons in platinum aluminide semi-shells
ผู้แต่ง: Shahcheraghi N.
Gentle A.
Supansomboon S.
Keast V.
Cortie M.B.
Keywords: Aluminum alloys
Binary alloys
Electric fields
Intermetallics
Nanotechnology
Optical properties
Plasmons
Platinum
Platinum alloys
Shells (structures)
Titanium nitride
Aluminides
Dielectric functions
Localized surface plasmon
Localized surface plasmon resonance
Plasmon resonances
Plasmonic devices
Resonant condition
Semi-shells
Surface plasmon resonance
วันที่เผยแพร่: 2019
บทคัดย่อ: The dielectric function of the intermetallic compound PtAl2 is assessed and found to be comparable to that of titanium nitride, suggesting that nanostructures of PtAl2 may be suitable for plasmonic devices. In order to probe this further, the optical properties of experimentally produced arrays of nanoscale PtAl2 semi-shells of about 300 nm diameter were examined and compared to the results of numerical simulations. The structures showed a broad localized surface plasmon resonance centered on ∼1.3 eV (∼950 nm), which matched the simulations. Calculations showed that a ten-fold enhancement of the electric field of the incident light will be achieved around the rim of suitably oriented PtAl2 semi-shells. The phase of the oscillation induced by 1060 nm light will be retarded by π/2 relative to the incident light. This is indicative of a resonant condition. These observations suggest that it could be worthwhile to investigate possible applications for this and other intermetallic compounds in nanoscale plasmonic devices. © 2019 IOP Publishing Ltd.
URI: https://ir.swu.ac.th/jspui/handle/123456789/12484
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85069912674&doi=10.1088%2f2399-1984%2fab0659&partnerID=40&md5=1e7db77d8844c6b012b7136ecfa8f2fd
ISSN: 23991984
Appears in Collections:Scopus 1983-2021

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