Dielectric sculptured nematic thin films for rugate-like filters

Preparation and characterization of nanostructured ZrO2 thin films by glancing angle deposition

“…By exploiting different rotation ways of the substrate, a wide variety of microstructures, such as inclined columns, straight pillars, helix and zig-zag shape, can be tailored [5][6][7][8]. Then many novel physicochemical properties can also be easily engineered [9].Zirconium dioxide (ZrO 2 ) is an important material in several fields owing to its superior thermal, mechanical, optical and electric properties. Especially, ZrO 2 thin films are useful for optical devices because of its desirable properties such as high refractive index, high transparency in the visible, near-infrared region and high damage threshold value of repetitive pulsed laser [10,11].…”

Origin and evolution of sculptured thin films

“…Other envisioned applications include low-k dielectrics, 15,16 porous Si electroluminescent material, catalyst supports, molecular sieves, biocompatible and bioactive substrates, and optical elements. 17,18 It is also possible to infiltrate a STF with a condensable phase ͑e.g., a polymerized monomer͒ to form a composite or to etch away the host STF to make the negative. In this latter regard, replamineform technology 19 is being used for medical implants using m-scale morphologies of natural coral as the medium to infiltrate.…”

Ellipsometry on Anisotropic Materials: Bragg Conditions and Phonons in Dielectric Helical Thin Films

“…In order to extract intrinsic physical quantities, such as the major indices of refraction and extinction coefficients, or orientation, length, and handedness of the helical structure, or the thickness of the DHTF from ellipsometry data model calculations, compromise numerical methods must stratify the cell into numerous virtually homogeneous anisotropic layers. This piecewise homogeneous approximation approach requires immense computational effort, but still delivers approximate results only [2,[32][33][34][35][36][37][38][39][40][41]. Convenient mathematical approaches for treatment of light incident not parallel to the helical axis have become available only very recently [42][43][44][45].…”