PROJECT TITLE :

Nanocolumnar growth of thin films deposited at oblique angles: Beyond the tangent rule

ABSTRACT:

The expansion of nanostructured physical vapor deposited thin films at oblique angles is changing into a hot topic for the event of a big selection of applications. Up to currently, empirical relations, like the therefore-referred to as tangent rule, have been uncritically applied to account for the event of the nanostructure of these thin films even when they don't accurately reproduce most experimental results. In this paper, the expansion of thin films at oblique angles is analyzed under the premises of a recently proposed surface trapping mechanism. The authors demonstrate that this process mediates the effective shadowing area and determines the relation between the incident angle of the deposition flux and the lean angle of the columnar thin film nanostructures. The analysis of experimental knowledge for a massive selection of materials obtained in our laboratory and brought from the literature supports the existence of a affiliation between the surface trapping potency and the metallic character of the deposited materials. The implications of those predictive conclusions for the event of latest applications based mostly on oblique angle deposited skinny films are discussed.


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