BPN580: Nanovolcano Array For Biomolecular Analysis


Optical transmission through a very small nanoaperture decorated with concentric gratings on the apex of a metallic micropyramid can guide the beam path after transmission. A micro-pyramidal probe with periodic grooves acts as an antenna in terms of beam radiation as well as a lens in terms of beam focus. We optically resolve that the transmitted beam is splitted to the corresponding pyramid surfaces guided by gratings. By using the pseudo-Kretschmann configuration and grating surface plasmon polariton coupling, we can explain that SPPs propagating along a pyramidal surface modulated with a grating couple to light and thus radiate. The work may lead to more sensitive probes of the optical properties of nanostructures.

Project end date: 02/06/12

Publication date: 
August 18, 2011
Publication type: 
BSAC Project Materials (Final/Archive)
PREPUBLICATION DATA - ©University of California 2011

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