Nano Archive

A hybrid plasmonic-photonic nanodevice for label-free detection of a few molecules

De Angelis, Francesco and Patrini, Maddalena and Das, Gobind and Maksymov, Ivan and Galli, Matteo and Businaro, Luca and Andreani, Lucio Claudio and Di Fabrizio, Enzo (2008) A hybrid plasmonic-photonic nanodevice for label-free detection of a few molecules. NANO LETTERS, 8 (8). pp. 2321-2327.

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Noble metal nanowaveguides supporting plasmon polariton modes are able to localize the optical fields at nanometer level for high sensitivity biochemical sensing devices. Here we report on the design and fabrication of a novel photonic-plasmonic device which demonstrates label-free detection capabilities on single inorganic nanoparticles and on monolayers of organic compounds. In any case, we determine the Raman scattering signal enhancement and the device detection limits that reach a number of molecules between 10 and 250. The device can be straightforwardly integrated in a scanning probe apparatus with the possibility to match topographic and label-free spectroscopic information in a wide range of geometries.

Item Type:Article
Subjects:Analytical Science > Microscopy and probe methods
Biomedical Science > Nanobiotechnology
Physical Science > Photonics
ID Code:1436
Deposited By:Farnush Anwar
Deposited On:12 Dec 2008 16:15
Last Modified:13 Jan 2009 15:14

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