Towards Better Control of Sol-gel Film Processing for Optical Device Applications
نویسنده
چکیده
This paper reviews work carried out by the authors in developing nanoporous sol-gel films as hosts for semiconductor crystallites, for applications in nonlinear integrated optics, including aspects of fabrication, characterisation and modelling. Particular attention is given to three novel techniques optospinography, molecular probe ellipsometry and pore capping, as well as prospects that have been raised from their outcome.
منابع مشابه
Evaluation of Photocatalytic Activity of Fe Doped TiO2 Thin Film Prepared by sol-gel hot dip-coating
The application of Fe–TiO2 photocatalysis using sol–gel method by hot–dipping technique was investigated. Then, the influences of fabrication parameters, molar ratios of Fe to TiO2, the sol temperature, poly ethylene glycol (PEG) content and the number of dipping cycles on the photocatalytic activity in visible light region were mainly studied. The experimental results revealed the sample with ...
متن کاملFoldable and Cytocompatible Sol-gel TiO2 Photonics
Integrated photonics provides a miniaturized and potentially implantable platform to manipulate and enhance the interactions between light and biological molecules or tissues in in-vitro and in-vivo settings, and is thus being increasingly adopted in a wide cross-section of biomedical applications ranging from disease diagnosis to optogenetic neuromodulation. However, the mechanical rigidity of...
متن کاملNew Sol-Gel Solution with 45 Days Stability for Preparation Silica Thin Films
As we know sol-gel is one of the most important techniques for thin film preparation. In this paper, high transmission silica thin films have been prepared by dip-coating process from a new silicon-alkoxide solution. The prepared sol was stable for 45 days which is very important to characterize the coating process. The optical properties as a function of aging time, withdrawal rate, and he...
متن کاملOptical Amplification and Photosensitivity in Sol-Gel Based Waveguides
The sol-gel process has emerged as an effective route for the fabrication of optical waveguides and guided wave devices and circuits. In particular, it is possible to incorporate active dopants like neodymium, erbium, and cesium for integrated optical active devices and circuits. In this paper, a review of recent research on active devices and circuits based on sol-gel process is made. Specific...
متن کاملPreparation and characteristics of seeded epitaxial (Sr,Ba)Nb2O6 optical waveguide thin films using sol-gel method
Highly c-axis-oriented (Sr,Ba)Nb2O6 (SBN) films were grown on a seeded MgO(100) substrate via sol-gel method. The substrate was preseeded with epitaxial islands of SBN made by breaking up a continuous film into single-crystal islands by pores. Since the number of epitaxial nuclei was increased at the interface between the film and the substrate, the film on a seeded substrate had better highly ...
متن کامل