Influence of the slight adjustment of oxides on the structural and physico-chemical properties of thin film transistor-liquid crystal display substrate glass

Abstract

By the slight adjustment of oxides constituting thin film transistor-liquid crystal display (TFT-LCD) substrate glass, including equal mole fraction substitution of Al 2 O 3 , GeO 2 , B 2 O 3 , P 2 O 5 and ZrO 2 for SiO 2 , as well as the substitution of CaO for SrO with the total contents unchanged, the structural and physico-chemical properties of the glass was investigated by Raman spectroscopy and other measurements. The results showed that the short-range disorder brought by the substitution of GeO 2 , B 2 O 3 and P 2 O 5 for SiO 2 could weaken the stability and compactness of the glass network, and the physico-chemical properties deteriorated, while the process of glass melting would become easier accordingly. The short-range disorder by the substitution of ZrO 2 for SiO 2 with 1% mole fraction showed a little difference with other samples. Finally, the substitution of modified cations, such as CaO and SrO, showed a smaller variation compared with the substitution of network formers. On the condition of 1% mole fraction substitution of oxides investigated, the variation of samples showed a reasonable change and the performance was basically all satisfied for the use of TFT-LCD substrate.

AnInjectable Composite Bone Cement Based on Mesoporous Borosilicate Bioactive Glass Spheres

“…In contrast to silicate-based solgels where the main network former tetrahedrally coordinated [SiO4] construct a strongly interconnected network, in borate-based glasses, the main structural units are BO3 trihedron or chains of [BO3] triangles. The incorporation of threefold coordinated boron can therefore disrupt the silicate network, resulting in decreasing network connectivity [32] . This indicates looser glass network, and thus higher surface area and larger pore volume.…”

An Injectable Composite Bone Cement Based on Mesoporous Borosilicate Bioactive Glass Spheres

“…In addition, the broad resonances centered at 1080 and 1220 cm -1 corresponding to the TO and LO modes of the asymmetric Si-Ostretching vibration were also observed for the MBGS-20B sample [31] . [32] . This indicates looser glass network, and thus higher surface area and larger pore volume.…”