Matthias Hillenkamp et al 2007 Nanotechnology 18 015702 doi:10.1088/0957-4484/18/1/015702
Matthias Hillenkamp, Giulia Di Domenicantonio, Olivier Eugster and Christian Félix
Show affiliationsThe room-temperature stability of nanometre-sized silver clusters in silica matrices has been investigated by following the temporal evolution of their surface plasmon absorption. Ag clusters in SiO2 were prepared by either annealing silica samples doped with atomic silver or by co-deposition of preformed clusters of defined size. Clusters were found to be unstable at ambient conditions on a timescale of days to weeks, independent of preparation conditions. The disappearance of the plasmonic resonance is explained by successive oxidation of the clusters even inside the matrix.
Issue 1 (10 January 2007)
Received 16 October 2006, in final form 6 November 2006
Published 8 December 2006
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