Journal
MATERIALS LETTERS
Volume 63, Issue 26, Pages 2263-2266Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2009.07.052
Keywords
Silver nanoparticles; Electron beam lithography; Stability
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The stability of silver nanoparticles on indium tin oxide coated glass substrates under atmospheric condition was investigated. These nanoparticles were fabricated using electron beam lithography. Energy dispersive spectroscopy analysis revealed a high concentration of sulfur in the silver nanoparticles exposed to laboratory air for 12 weeks at room temperature. Morphological changes in the silver nanoparticles were also observed for nanoparticles stored under the same conditions. In contrast, silver nanoparticles kept in vacuum did not show chemical or morphological changes after 12 weeks. The present work clearly shows the need to consider ambient exposure when using Ag nanoparticles for sensors. (C) 2009 Elsevier B.V. All rights reserved.
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