Enhanced thermal stability of Ag nanorods through capping

Authors

Lou Bachenheimer, University of Connecticut
Paul Elliott, University of Connecticut
Stephen Stagon, University of North FloridaFollow
Hanchen Huang, Northeastern University

Document Type

Article

Publication Date

11-24-2014

Abstract

Ag nanorods may serve as sensors in the detection of trace amounts of chemical agents, even single molecules, through surface enhanced Raman spectroscopy (SERS). However, thermal coarsening of Ag nanorods near room temperature limits their applications. This letter proposes the use of a thin oxide capping layer to enhance the thermal stability of Ag nanorods beyond 100°C. Using electron microscopy characterization and SERS tests, the authors show that the proposed method is effective in stabilizing both morphology and sensitivity of Ag nanorods. The results of this work extend the applicability of Ag nanorods as chemical sensors to higher temperatures.

Publication Title

Applied Physics Letters

Volume

105

Issue

21

Digital Object Identifier (DOI)

10.1063/1.4902829

ISSN

00036951

Citation Information

Bachenheimer, Elliott, P., Stagon, S., & Huang, H. (2014). Enhanced thermal stability of Ag nanorods through capping. Applied Physics Letters, 105(21), 213104–. https://doi.org/10.1063/1.4902829