Optical anisotropy of porous polymer film with inverse slanted nanocolumnar structure revealed via generalized spectroscopic ellipsometry

Dan Liang, Derek Sekora, Charles Rice, Eva Schubert, Mathias Schubert

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

We use generalized spectroscopic ellipsometry to characterize the biaxial optical properties of porous polymer and slanted nanocolumnar template thin films. The porous polymer with inverse columnar structure was prepared via infiltrating polymer into the voids of the slanted nanocolumnar film and selectively removing the column material (cobalt). The anisotropic Bruggeman effective medium approximation was employed to analyze the ellipsometry data of the porous polymer film and nanocolumnar template. The classification and structure of optical anisotropy are found to be identical for both samples. The interchangeable optical behaviors between two complementary structures are attributed to the equivalency in their anisotropic polarizabilities.

Original languageEnglish (US)
Article number071908
JournalApplied Physics Letters
Volume107
Issue number7
DOIs
StatePublished - Aug 17 2015

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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