Plasmon Resonant Cavities in Vertical Nanowire Arrays

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• 作者：Mihail Bora ; Benjamin J. Fasenfest ; Elaine M. Behymer ; Allan S-P Chang ; Hoang T. Nguyen ; Jerald A. Britten ; Cindy C. Larson ; James W. Chan ; Robin R. Miles ; Tiziana C. Bond
• 刊名：Nano Letters
• 出版年：2010
• 出版时间：August 11, 2010
• 年：2010
• 卷：10
• 期：8
• 页码：2832-2837
• 全文大小：418K
• 年卷期：v.10,no.8(August 11, 2010)
• ISSN：1530-6992

文摘

We investigate tunable plasmon resonant cavity arrays in paired parallel nanowire waveguides. Resonances are 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 satisfy the dispersion relation of a planar metal−dielectric−metal waveguide of equivalent width equal to the square field average weighted gap. Confinement factors over 10³ are possible due to plasmon focusing in the interwire space.

Keywords:

Plasmon, resonant cavity, nanowire, metal-dielectric-metal