Nano Archive

Nanorice: A hybrid plasmonic nanostructure

Wang, H and Brandl, Daniel W. and Le, F and Nordlander, P and Halas, Naomi J. (2006) Nanorice: A hybrid plasmonic nanostructure. NANO LETTERS, 6 (4). pp. 827-832.

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We have designed and fabricated a new hybrid nanoparticle that combines the intense local fields of nanorods with the highly tunable plasmon resonances of nanoshells. This dielectric core-metallic shell prolate spheroid nanoparticle bears a remarkable resemblance to a grain of rice, inspiring the name ``nanorice''. This geometry possesses far greater structural tunability than either a nanorod or a nanoshell, along with much larger local field intensity enhancements and far greater sensitivity as a surface plasmon resonance (SPR) nanosensor than any dielectric-metal nanostructures reported previously. Invoking the plasmon hybridization picture allows us to understand the plasmon resonances of this geometry, as arising from a hybridization of the primitive plasmons of a solid spheroid and an ellipsoidal cavity inside a continuous metal.

Item Type:Article
Subjects:Material Science > Functional and hybrid materials
Analytical Science > Nanotechnology for sensing and actuating
ID Code:2735
Deposited By:Lesley Tobin
Deposited On:20 Jan 2009 12:16
Last Modified:26 Mar 2009 17:42

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