Ionic Conductivity of NaAlPO Glass Electrolytes-Role of Charge Compensators.

In glasses, a sodium ion (Na) is a significant mobile cation that takes up a dual role, that is, as a charge compensator and also as a network modifier. As a network modifier, Na cations modify the structural distributions and create nonbridging oxygens. As a charge compensator, Na cations provide imbalanced charge for oxygen that is linked between two network-forming tetrahedra.

Influence of gold nanoparticles on the nonlinear optical and photoluminescence properties of EuO doped alkali borate glasses.

Alkali borate glasses activated with trivalent europium ions and rooted with gold (Au) nanoparticles (NPs) were synthesised through a melt quenching process involving a selective thermochemical reduction and their applicability as photonic materials was assessed in detail. Non-linear optical (NLO) measurements were performed using a Z-scan approach in the wavelength range of 700-1000 nm. The open aperture Z-scan signatures for the Eu-containing glasses embedded with and without the Au NPs established a reverse saturable absorption (RSA) at all of the studied wavelengths ascribed to the two-photon absorption (2PA).