Papers by Keyword: Free Volume Distribution

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Authors: M.M. Madani, R.R. Miron, R.D. Granata
Authors: Cai-Lin Wang, Frans H.J. Maurer, Morten M. Eldrup, N.J. Pedersen
Authors: Taras Kavetskyy, Ondrej Šauša, Jozef Krištiak, Tamara Petkova, Plamen Petkov, Viktor Boev, N. Lyadov, Andrey L. Stepanov
Abstract: The new organic-inorganic materials, based on polyether chains covalently linked to a silica framework through urea bridges, referred as ureasilicates or ureasils, and semiconducting As2S3-ureasil composites are investigated using positron annihilation lifetime spectroscopy (PALS) and scanning electron microscopy (SEM) techniques. The results obtained show that incorporation of the As2S3 clusters into ureasil affects on the ortho-positronium (o-Ps) intensity or positronium formation probability and micro-/nanoscopic structure compared to the pure polymer, the effect is more essential as the loading fraction of As2S3 increases.
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