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Small. 2011 Dec 2;7(23):3276-80. doi: 10.1002/smll.201101523. Epub 2011 Oct 11.

Raman-active two-tiered Ag nanoparticles with a concentric cavity.

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  • 1Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.


A two-tiered Ag nanoparticle containing a cavity at the center of each nanoparticle is generated by two simple steps of nano-imprinting and metal vacuum deposition. It enables sub-zeptomole detection of organic molecules and five orders of the dynamic sensing range.

Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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