Raman-Active Two-Tiered Ag Nanoparticles with a Concentric Cavity

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.

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Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2011-12, Vol.7 (23), p.3276-3280
Main Authors: Wi, Jung-Sub, Sengupta, Sweta, Wilson, Robert J., Zhang, Mingliang, Tang, Mary, Wang, Shan X.
Format: Article
Language:English
Subjects:
Detection
Dynamics
Electricity
Holes
Metal Nanoparticles - chemistry
Metal Nanoparticles - ultrastructure
nano-imprints
Nanoparticles
Nanostructure
Nanotechnology
Organic chemistry
plasmon resonance
Polystyrenes - chemistry
Raman scattering
SERS
Silver
Silver - chemistry
Spectrum Analysis, Raman - methods
Vacuum deposition
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Description
Summary: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.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.201101523