Aligned silver nanorod arrays produce high sensitivity surface-enhanced Raman spectroscopy substrates
作者： Stephen B. Chaney , Saratchandra Shanmukh , Richard A. Dluhy , Y.-P. Zhao
DOI: 10.1063/1.1988980
关键词:
摘要: Substrates consisting of silver nanorod arrays with an irregular surface lattice (i.e., random nucleation sites) and varying rod lengths were fabricated by oblique angle vapor deposition method. These evaluated as potential surface-enhanced Raman spectroscopy (SERS) substrates using trans-1,2-bis(4-pyridyl)ethene a reported molecule. SERS activity was shown to depend upon the length nanorods. The Ag nanorods average 508.29±44.86nm, having aspect ratios 5.69±1.49 exhibited maximum enhancement factors greater than 108. Theoretical calculations indicate that this large may be partially explained shape, density, lateral arrangement arrays.
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