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3 2019

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Zastosowanie metod instrumentalnych w badaniach meteorytu Morasko

Muszyński Andrzej, Runka Tomasz, Gołębiewska Bożena, Michalska Danuta, Karwowski Łukasz

Przegląd Geologiczny

2019

Vol. 67, nr 3

156--158

Since its discovery, the Morasko meteorite has been the subject of many studies. Among the publications summarising the mineralogical and geochemical characteristics of the Morasko meteorite, two monographs are worth mentioning by: Dominik (1976) and Muszyński et al. (2012), in which the essentialfeatures of the Morasko meteorite were presented. Since the first piece of the Morasko meteorite was to be explored, the analysis of mineral composition has been conducted with more and more specialised and sophisticated instrumental methods. As it is well known, the Morasko meteorite is classified into the group of iron meteorites IAB MG, and consists mainly of the crystalline Fe-Ni alloy in the form of two minerals: kamacite and taenite, accompanied by tetrataenite. A commonly found structure of the mineral composition of the Morasko meteorite, as regards other iron meteorites, are graphite-troilite nodules, which contain silicate and phosphate minerals. This paper presents a review ofresearch on the mineralogy and geochemistry of the Morasko meteorite, where a number of instrumental tests have been used, from microscopic observations to microchemical semiquantitative analyses using scanning electron microscopy (SEM-EDS), microchemical quantitative analyses using an electron microprobe (WDS), to the structural methods applying Raman spectroscopy. The results of microscopic, microchemical and microstructural investigations, which have included the outer layer of the meteorite known as a fusion crust, have been presented against the petrographic composition of the meteorite. Besides, the type of sediment attached to the outer meteorite layer was examined. The research, conducted on two dozen meteorite fragments, allowed distinguishing two different zones concerning mineralogy and geochemistry, and to determine microstructural changes within them, most probably created in the processes related to the moment of the meteorite impact.

Samoorganizujące się warstwy organiczne – badania nad zastosowaniem do pasywacji antymonkowych detektorów podczerwieni

Papis-Polakowska Ewa, Czuba Krzysztof, Runka Tomasz, Martyński Tomasz, Makowiecki Jarosław, Jasik Agata

Przegląd Elektrotechniczny

2019

R. 95, nr 9

119--122

W artykule, przedstawiono wyniki mikroskopii sił atomowych (AFM), spektroskopii Ramana i analizy kąta zwilżania samoorganizującej się warstwy oktadekanotiolu (ODT) na powierzchni (100) GaSb. Warstwę ODT otrzymaną zanurzeniowo z roztworu 10 mM ODT-C2H5OH, zastosowano jako pierwszy etap dwustopniowej pasywacji, który połączony z drugim etapem polegającym na osadzaniu warstwy SiO2, poprawił znacząco parametry elektryczne detektora podczerwieni wykonanego z supersieci II-rodzaju InAs/GaSb.

The paper presents the results of the AFM, Raman spectroscopy and the contact angle analysis obtained for the self-assembled octadecanethiol (ODT) monolayer on the (100) GaSb surface. The ODT monolayer created from the 10 mM ODT-C2H5OH solution, together with additionally deposited SiO2 layer, were successfully used as the two-step passivation of the II-type superlattice InAs/GaSb infrared photodetector.

Biological activity of carbon nanoparticles produced in combustion process

Kałużny Jarosław, Idaszewska Natalia, Runka Tomasz, Piasecki Adam, Nowicki Marek, Merkisz Jerzy

Combustion Engines

2019

R. 58, nr 4

269--273

In the recent years industrial applications of carbon allotropes such as carbon nanotubes (CNTs) and graphene have been tested extensively, thus justifying research on the environmental impact these materials have. In the current paper we compare EDS spectroscopy results of a cabin filter used in a car to a filter used in an air purifier inside a residential space. The contaminants adsorbed on the car-bon nanoparticles trapped in both types of filters allows for determining of their source of origin demonstrating clearly the dominant role of non-road emissions in Poland. Finally we present the experimental study on the growth of plants on substrates intentionally enriched with CNTs.