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

Journal Article · Mon Jul 21 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4891533· OSTI ID:22311172

Dai, Zhigao; Liao, Lei; Wu, Wei; Guo, Shishang; Zhao, Xinyue; Li, Wei; Ren, Feng; Jiang, Changzhong ^[1]; Mei, Fei ^[1]; Xiao, Xiangheng ^[1]; Fu, Lei; Wang, Jiao ^[2]

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1. Department of Physics, Hubei Nuclear Solid Physics Key Laboratory and Center for Ion Beam Application, Wuhan University, Wuhan 430072 (China)
2. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China)

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.

• OSTI ID: 22311172
• Journal Information: Applied Physics Letters, Vol. 105, Issue 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CAPACITY
COLLOIDS
DENSITY
DEPOSITION
DETECTION
HOT SPOTS
MELAMINE
MOLECULES
NANOPARTICLES
NANOSTRUCTURES
RAMAN EFFECT
SCATTERING
SILVER
SURFACES