Thermal Stability of Silver Nanorod Arrays
Chemistry of Materials2010Vol. 22(7), pp. 2184–2189
Citations Over TimeTop 13% of 2010 papers
Abstract
Silver nanorod arrays fabricated by glancing angle deposition have found application as substrates for surface enhanced Raman scattering. A critical issue in the continued development of these substrates is their stability over time. The thermal stability of the arrays was systematically investigated. Thermally induced changes in surface morphology were evaluated using scanning electron microscopy and X-ray diffraction and correlated with changes in SERS enhancement. The findings presented herein suggest that the shelf life of silver nanorod arrays is limited by migration of silver on the surface. This rate of migration is enhanced by the presence of a surface layer of chemisorbed oxygen.
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