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Raman‐Active Two‐Tiered Ag Nanoparticles with a Concentric Cavity
Author(s) -
Wi JungSub,
Sengupta Sweta,
Wilson Robert J.,
Zhang Mingliang,
Tang Mary,
Wang Shan X.
Publication year - 2011
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201101523
Subject(s) - nanoparticle , materials science , nanotechnology , raman spectroscopy , molecule , optics , chemistry , physics , organic chemistry
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.