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Title: “Rings of saturn-like” nanoarrays with high number density of hot spots for surface-enhanced Raman scattering

The Ag nanoparticles (NPs) surrounding triangular nanoarrays (TNAs) with high number density of surface-enhanced Raman scattering (SERS) hot spots (SERS hot spots ring) are prepared by a combination of NPs deposition and subsequent colloid lithography processing. Owing to the SERS hot spots ring, the Ag NPs surrounding TNAs have been proved an excellent candidate for ultrasensitive molecular sensing for their high SERS signal enhancing capacity in experiments and theories. The Ag NPs surrounding TNAs can be readily used for the quick detection of low concentrations of molecules related to food safety; herein, detection of melamine is discussed.
Authors:
; ; ; ; ; ; ;  [1] ;  [1] ;  [2] ;  [1] ;  [3] ; ;  [4]
  1. Department of Physics, Hubei Nuclear Solid Physics Key Laboratory and Center for Ion Beam Application, Wuhan University, Wuhan 430072 (China)
  2. (China)
  3. (United States)
  4. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China)
Publication Date:
OSTI Identifier:
22311172
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; CAPACITY; COLLOIDS; DENSITY; DEPOSITION; DETECTION; HOT SPOTS; MELAMINE; MOLECULES; NANOPARTICLES; NANOSTRUCTURES; RAMAN EFFECT; SCATTERING; SILVER; SURFACES