Publication detail

Surface mobility in amorphous selenium and comparison with organic molecular glasses

Year: 2021

Type of publication: článek v odborném periodiku

Name of source: Journal of Chemical Physics

Publisher name: American Institute of Physics

Place: Melville

Page from-to: "074703-1"-"074703-6"

Titles:

Language	Name	Abstract	Keywords
cze	Povrchová mobilita v amorfním selenu a srovnání s organickými skly	Povrchová difúze je důležitá pro řadu chemických a fyzikálních procesů probíhajících na povrchu amorfních pevných látek, včetně krystalizace. Tato práce se zabývá měřením povrchové dynamiky nanoděr pomocí metody AFM. Výsledky pro amorfní selen jsou porovnány s chováním molekulárních organických skel.	AFM; sklo; anorganické polymery; selen; povrchová difuze; růst krystalů
eng	Surface mobility in amorphous selenium and comparison with organic molecular glasses	Surface diffusion is important for a broad range of chemical and physical processes that take place at the surfaces of amorphous solids, including surface crystallization. In this work, the temporal evolution of nanoholes is monitored with atomic force microscopy to quantify the surface dynamics of amorphous selenium. In molecular glasses, the surface diffusion coefficient has been shown to scale with the surface crystal growth rate (u(s)) according to the power relation u(s) approximate to D-s(0.87). In this study, we observe that the same power law applies to surface crystallization of amorphous selenium, a representative inorganic polymer glass. Our study shows that the surface diffusion coefficient can be used to quantitatively predict surface crystallization rates in a chemically diverse range of materials.	Atomic force microscopy; Glass; Inorganic polymers; Selenium; Surface diffusion; Crystal growth

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