V. P. N. Nampoori

TL;DR: In this article, size dependent spectroscopic observations of nanocolloids of ZnO are presented, and the mechanism of the luminescence suggests that UV luminecence is related to the transition from conduction band edge to valence band.

TL;DR: In this article, the fluorescence behavior of nano colloids of ZnO has been studied as a function of the excitation wavelength, and it was shown that the existence of a distribution of energetically different molecules in the ground state coupled with a low rate of the excited state relaxation processes, namely, solvation and energy transfer, are responsible for the exciting wavelength dependent fluorescence behaviour of the systems.

TL;DR: The spectral and nonlinear optical properties of ZnO-TiO(2) nanocomposites prepared by colloidal chemical synthesis are presented and they show self-defocusing nonlinearity and good nonlinear absorption behaviour.

TL;DR: In this article, an off-line fiber optic sensor based on evanescent field absorption in a test solution formed by the reaction of nitrite compounds in water with suitable chemical reagents is described.

TL;DR: In this paper, the spectral and nonlinear optical properties of ZnO thin films deposited on quartz substrates by sol-gel process are investigated. And the role of oxygen in thin films during the annealing process is important to the change in optical properties.