Plasmonic nanofocusing with a metallic pyramid and an integrated C-shaped aperture

Nathan C. Lindquist, Timothy W. Johnson, Prashant Nagpal, David J. Norris, Sang Hyun Oh

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

We demonstrate the design, fabrication and characterization of a near-field plasmonic nanofocusing probe with a hybrid tip-plus-aperture design. By combining template stripping with focused ion beam lithography, a variety of aperture-based near-field probes can be fabricated with high optical performance. In particular, the combination of large transmission through a C-shaped aperture aligned to the sharp apex (<10 nm radius) of a template-stripped metallic pyramid allows the efficient delivery of light - via the C-shaped aperture - while providing a nanometric hotspot determined by the sharpness of the tip itself.

Original languageEnglish (US)
Article number1857
JournalScientific reports
Volume3
DOIs
StatePublished - 2013

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