期刊
ANALYTICAL CHEMISTRY
卷 85, 期 4, 页码 2297-2303出版社
AMER CHEMICAL SOC
DOI: 10.1021/ac303269w
关键词
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资金
- National Science Foundation [CHE-0911145, CHE-1152547, DMR-1121262]
- Defense Advanced Research Projects Agency [N66001-11-1-4179, FA9550-08-1-0221]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1121262] Funding Source: National Science Foundation
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1152547] Funding Source: National Science Foundation
We describe the fabrication of optimized plasmonic substrates in the form of immobilized nanorod assemblies (INRA) for surface-enhanced Raman spectroscopy (SERS). Included are high-resolution scanning electron micrograph (SEM) images of the surface structures, along with a mechanistic description of their growth. It is shown that, by varying the size of support microspheres, the surface plasmon resonance is tuned between 330 and 1840 nm. Notably, there are predicted optimal microsphere sizes for each of the commonly used SERS laser wavelengths of 532, 633, 785, and 1064 nm.
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