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Plasmon resonant cavities in vertical nanowire arrays

United States Patent

July 15, 2014
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
Tunable plasmon resonant cavity arrays in paired parallel nanowire waveguides are presented. Resonances can be observed when the waveguide length is an odd multiple of quarter plasmon wavelengths, consistent with boundary conditions of node and antinode at the ends. Two nanowire waveguides can satisfy the dispersion relation of a planar metal-dielectric-metal waveguide of equivalent width equal to the square field average weighted gap. Confinement factors of over 10.sup.3 are possible due to plasmon focusing in the inter-wire space.
Bora; Mihail (Livermore, CA), Bond; Tiziana C. (Livermore, CA), Fasenfest; Benjamin J. (Union City, CA), Behymer; Elaine M. (Livermore, CA)
Lawrence Livermore National Security, LLC (Livermore, CA)
13/ 410,226
March 1, 2012
STATEMENT OF GOVERNMENT GRANT This invention was made with government support under Contract DE-AC52-07NA27344 awarded by the U.S. Department of Energy. The government has certain rights in the invention.