To the thermodynamic properties of nano-ensembles
| Autor: | Liudmila Tsygankova, Larisa G. Knyazeva, Michael Vigdorowitsch, Vladimir Vigdorovich |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
020209 energy Mechanical Engineering Thermodynamics 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Thermodynamic potential Surface tension Mechanics of Materials Nano Mole 0202 electrical engineering electronic engineering information engineering General Materials Science 0210 nano-technology |
| Zdroj: | Materials Science and Engineering: B. 263:114897 |
| ISSN: | 0921-5107 |
| DOI: | 10.1016/j.mseb.2020.114897 |
| Popis: | The problem of nano-particles (NPs) stability is related to negative consequences due to quality deterioration and energetically conditioned. In this paper we model thermodynamic characteristics of a metal NP ensemble. The problem of changes in thermodynamic potentials (TPs) of an NP-ensemble is formulated and estimatively solved. This comprises two sub-problems, i.e. a surface tension related TP-increase and vacancy-related TP-decrease. Nano-ensembles with In and Au particles are considered. A TP specific increase due to surface tension reaches 3.1·10−5 J/mole (In) and 3.9·10−5 J/mole (Au) at 300 K, the specific vacancy-related decrease constitutes 3.4·105 J/mole (In) and 7.2·1015 J/mole (Au). The vacancy-related effect dominates provided the ensembles comprised extremely small NPs ( |
| Databáze: | OpenAIRE |
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