Properties of Silica Glass Doped with Titanium Oxide

Abstract

The features of anomalous behavior of silica glass doped with titanium oxide are discussed. The low thermal expansion of silica glass is considered on the base of the idea about polymorphous transformations in meta-stable glass structures. The analogy of these transformations to structural transitions of martensite type in metallic alloys is assumed. The effect of TiO2-doping on the structure and the intrinsic strength of silica glass fibers is studied. The structural (intrinsic) strength has been found to decrease by about 15% compared to that of non-doped silica glass. This decrease of strength is assumed to be accounted for the incorporation of a part of titanium ions into glass structure with six-fold coordination resulting in weakening the connectivity of a glass anionic network.

Dissection of the structure-forming activity from the structure-guiding activity of silicatein: a biomimetic molecular approach to print optical fibers

“…45), and even allow the production of efficient affinity probes for phosphopeptide enrichment, 46 characterized by favorable thermal expansion coefficients. 47 The advantages of the mCP technology using wild type or mutated silicateins are evident; the process can be performed under physiological, ambient conditions and in turn can be applied also on organic surfaces. While mCP is usually performed at ultra-at surfaces of metals, silicon or glass substrates, others, even organic, surfaces can be chosen as well.…”