Showing papers by "Goran Pichler published in 2019"
17 Apr 2019
TL;DR: In this paper, a digital interferometry based device for measuring the thickness variations of the resin composite materials during blue light polymerization is described, which enables two types of quantitative measurements providing data for the total displacement and the dynamic behavior of displacement.
Abstract: Digital interferometry based device for measuring the thickness variations of the resin composite materials during blue light polymerization is described. The proposed device enables two types of quantitative measurements providing data for the total displacement and the dynamic behavior of displacement. The effect of the thermal expansion as well as polymerization shrinkage can be clearly resolved between different materials, curing lights and modes. The effectivness of our experimental device is illustrated with selected results obtained for a commercial dental material.
1 citations
26 Feb 2019
TL;DR: In this article, the authors demonstrate a new use of the micrometric-thick, high-quality optical cell filled with Cs vapor that intrinsically contains extremely small concentration of Rb atoms (0.01% in our case).
Abstract: In this communication, we demonstrate a new use of the micrometric-thick, high-quality optical cell filled with Cs vapor that intrinsically contains extremely small concentration of Rb atoms (0.01% in our case). When heated to temperature about 200 °C such alkali mixture consists of Cs2 dimers and Cs atoms together with small number of Rb atoms. Here, we use Rb atomic spectrum as a reference one, in order to characterize spectral profiles and frequency positions of observed spectral lines of Cs2 molecules, in a spectral region around the D2 resonance line of Rb with wavelength λ = 780nm. After the reference spectrum, the first dimer spectra observed in micrometric vapor layer are presented and analyzed.