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


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
Issue number8
StatePublished - Feb 20 2012

Bibliographical note

Funding Information:
This work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. DE-FG02-06ER46438 and used resources at the University of Minnesota Characterization Facility, which has received capital equipment funding from the U.S. National Science Foundation (NSF) under the MRSEC and NNIN Programs. S.-H.O. acknowledges support from the NSF CAREER Award and the Office of Naval Research Young Investigator Award (N00014-11-1-0645).


Dive into the research topics of 'Improved dielectric functions in metallic films obtained via template stripping'. Together they form a unique fingerprint.

Cite this