Key Engineering Materials Vol. 806

Abstract: We demonstrate that confocal laser scanning microscopy could be successfully used for rapid search of the organisms in the dark part of the amber samples. Combination of mid-infrared spectroscopy, confocal laser scanning microscopy and optical microscopy, allowed to identify and assess the quality of Baltic amber with fossil inclusion. Inclusion was identified as a spider from suborder Araneomorphae family Typhlopidae and it was struck by the mycelium.

Abstract: Currently, in the scientific literature, there is no a sole opinion on mechanisms governing phenomenon of blue amber. In specimens sampled in Dominican Republic it is caused by presence of perylene; whereas, specimens sampled in northern Spain this has not been confirmed. We have obtained specimens from a third, earlier not studied, source of blue amber in the Far East of Russia that was described in 2015. This sample was investigated with a laser confocal microscopy and a laser bleaching studies. We found fluorescence pattern that is typical for perylene and bleaching showed rapid diffusion that is consistent with the perylene hypothesis. Moreover we demonstrate that confocal laser scanning microscopy could be successfully used for rapid search of the organisms in the dark part of the amber samples.

Abstract: The model for sapphire crystals growth parameters estimation has been suggested. It can be served as a basis for the analysis of heat transfer processes during sapphire crystals obtaining. It allows to predict the bubbles, stresses and cracks appearing during sapphire crystals growth. We describe the results of the analysis and parameters estimation of sapphire crystals growth on all stages by horizontal directed crystallization method.