Raman scattering enhanced by plasmonic clusters and its application to single-molecule imaging

Journal Article · Thu Dec 31 00:00:00 EST 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4938855· OSTI ID:22499159

Yasuike, Tomokazu ^[1]; Nobusada, Katsuyuki ^[2]

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1. The Open University of Japan, Wakaba 2-11, Mihama-ku, Chiba 261-8586 (Japan)
2. Institute for Molecular Science and SOKENDAI, Nishigonaka 38, Okazaki, 444-8585 (Japan)

The optical response of the linear Au{sub 8} cluster is investigated by the linear response theory based on the density functional theory. It is revealed that the observed many peaks in the visible region originate from the interaction of the ideal plasmonic excitation along the molecular axis with the background d-electron excitations, i.e., the Landau damping. In spite of the existence of the damping, the Raman scattering is shown to be enhanced remarkably by the incident light resonant to the visible excitations. The novel imaging experiment with the atomic resolution is proposed by utilizing a plasmonic cluster as the probing tip.

• OSTI ID: 22499159
• Journal Information: AIP Conference Proceedings, Vol. 1702, Issue 1; Conference: ICCMSE 2015: International conference of computational methods in sciences and engineering 2015, Athens (Greece), 20-23 Mar 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMIC CLUSTERS
D STATES
DENSITY FUNCTIONAL METHOD
ELECTRONS
EXCITATION
GOLD
IMAGES
LANDAU DAMPING
MOLECULES
PEAKS
PROBES
RAMAN EFFECT
RESOLUTION