High-throughput fabrication of nanoantennae over large areas for biosensing and nanospectroscopy

Kiristopuryan, Arda; Ekinci, Yasin; Giannini, Reto; Sahoo, Pratap K.; Gorodyska, Ganna; Löffler, Jörg F.
December 2009
Applied Physics Letters;12/7/2009, Vol. 95 Issue 23, p231903
Academic Journal
We report on a simple and high-throughput method for the fabrication of gold and silver nanoparticle dimers with extremely small gaps and extending over large areas, using colloidal lithography and shadow thermal-evaporation techniques. The plasmon resonances of the individual dimers with various structural parameters were studied, as well as their coupling phenomena in the nearly touching regime. The method presented enables fabrication of efficient and low-cost plasmonics structures for applications such as surface-enhanced Raman scattering, plasmon-enhanced fluorescence, and biosensing.


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