Plasmonic Roche lobe in metal-dielectric-metal structure

Journal Article · Mon Jul 15 00:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4813246· OSTI ID:22227917

Shiu, Ruei-Cheng; Lan, Yung-Chiang ^[1]

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1. Department of Photonics, National Cheng Kung University, Tainan, 701, Taiwan (China)

This study investigates a plasmonic Roche lobe that is based on a metal-dielectric-metal (MDM) structure using finite-difference time-domain simulations and theoretical analyses. The effective refractive index of the MDM structure has two centers and is inversely proportional to the distance from the position of interest to the centers, in a manner that is analogous to the gravitational potential in a two-star system. The motion of surface plasmons (SPs) strongly depends on the ratio of permittivities at the two centers. The Lagrange point is an unstable equilibrium point for SPs that propagate in the system. After the SPs have passed through the Lagrange point, their spread drastically increases.

• OSTI ID: 22227917
• Journal Information: Physics of Plasmas, Vol. 20, Issue 7; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
DIELECTRIC MATERIALS
EQUILIBRIUM
GRAVITATION
HETEROJUNCTIONS
METALS
PERMITTIVITY
PLASMONS
REFRACTIVE INDEX
ROCHE EQUIPOTENTIALS
SURFACES