Improved dielectric functions in metallic films obtained via template stripping

Jong Hyuk Park, Prashant Nagpal, Sang Hyun Oh, David J. Norris

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

We compare the dielectric functions of silver interfaces obtained via thermal evaporation with those obtained with template stripping. Ellipsometry measurements show that the smoother template-stripped surfaces exhibit effective dielectric functions with a more negative real component and a smaller imaginary component, implying higher conductivity and less energy loss, respectively. These results agree with the relation between dielectric function and surface roughness derived from combining the effective-medium model and the Drude-Lorentz model. The improvement in the effective dielectric properties shows that metallic films prepared via template stripping can be favorable for applications in electronics, nanophotonics, and plasmonics.

Original languageEnglish (US)
Article number081105
JournalApplied Physics Letters
Volume100
Issue number8
DOIs
StatePublished - Feb 20 2012

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