Applied Physics Letters
Generalized spectroscopic ellipsometry determines the principal monoclinic optical constants of thin films consisting of slanted titanium nanocolumns deposited by glancing angle deposition under 85° incidence and tilted from the surface normal by 47°. Form birefringence measured for wavelengths from 500 to 1000 nm renders the Ti nanocolumns monoclinic absorbing crystals with c-axis along the nanocolumns, b-axis parallel to the film interface, and 67.5° monoclinic angle between the aand c-axes. The columnar thin film reveals anomalous optical dispersion, extreme birefringence, strong dichroism, and differs completely from bulk titanium. Characteristic bulk interband transitions are absent in the spectral range investigated.
Copyright © 2009, American Institute of Physics.
American Institute of Physics
Schmidt, Daniel; Booso, Benjamin; Hofmann, Tino; Schubert, Eva; Sarangan, Andrew; and Schubert, Mathias, "Monoclinic Optical Constants, Birefringence, and Dichroism of Slanted Titanium Nanocolumns Determined by Generalized Ellipsometry" (2009). Electrical and Computer Engineering Faculty Publications. 91.