English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Two different formalisms for the homogenization of composite materialscontaining ellipsoidal inclusions based on Bruggeman's original formula forspherical inclusions can be found in the literature. Both approximationsdetermine the effective macroscopic permittivity of such an idealized compositeassuming randomly distributed dielectric particles of equal shape and differonly in the definition of the depolarization factors. The two approaches areapplied to analyze ellipsometric Mueller matrix spectra acquired in the visibleand near-infrared spectral region from metal and semiconductor slanted columnarthin films. Furthermore, the effective dielectric function tensor generated bythe two Bruggeman formalisms is compared to effective major axes dielectricfunctions individually determined with a homogeneous biaxial layer approach.Best-match model parameters of all three model approaches are discussed andcompared to estimates from scanning electron microscope images. The structuralparameters obtained from all three optical modeling approaches agree well withthe electron microscopy technique. A comparative discussion is given for thevalidity and applicability of the three model approaches for analysis of futuredevices structures that may require optical readout using generalizedellipsometry methods.

Anisotropic Bruggeman Effective Medium Approaches for Slanted Columnar Thin Films