Structure and surface energy of Au 55 nanoparticles: An ab initio study

2017 ◽  
Vol 134 ◽  
pp. 137-144 ◽  
Author(s):  
David Holec ◽  
Franz Dieter Fischer ◽  
Dieter Vollath
Keyword(s):  
Surface Energy ◽  
Ab Initio ◽  
Ab Initio Study

scholarly journals Au55, a stable glassy cluster: results of ab initio calculations

2017 ◽  
Vol 8 ◽  
pp. 2221-2229 ◽  
Author(s):  
Dieter Vollath ◽  
David Holec ◽  
Franz Dieter Fischer
Keyword(s):  
Surface Energy ◽  
Ab Initio ◽  
Experimental Result ◽  
Structure And Properties ◽  
Ab Initio Study ◽  
Bulk Materials ◽  
Coordination Numbers ◽  
Theoretical Approaches ◽  
Bulk Gold ◽  
Small Nanoparticles

Structure and properties of small nanoparticles are still under discussion. Moreover, some thermodynamic properties and the structural behavior still remain partially unknown. One of the best investigated nanoparticles is the Au55 cluster, which has been analyzed experimentally and theoretically. However, up to now, the results of these studies are still inconsistent. Consequently, we have carried out the present ab initio study of the Au55 cluster, using up-to-date computational concepts, in order to clarify these issues. Our calculations have confirmed the experimental result that the thermodynamically most stable structure is not crystalline, but it is glassy. The non-crystalline structure of this cluster was validated by comparison of the coordination numbers with those of a crystalline cluster. It was found that, in contrast to bulk materials, glass formation is connected to an energy release that is close to the melting enthalpy of bulk gold. Additionally, the surface energy of this cluster was calculated using two different theoretical approaches resulting in values close to the surface energy for bulk gold. It shall be emphasized that it is now possible to give a confidence interval for the value of the surface energy.

Investigation of work function and surface energy of aluminum: An ab-initio study

2013 ◽  
Author(s):  
Shuguang Cheng ◽  
Cher Ming Tan ◽  
Tianqi Deng ◽  
Feifei He ◽  
Shuai Zhang ◽  
...  
Keyword(s):  
Surface Energy ◽  
Ab Initio ◽  
Work Function ◽  
Ab Initio Study

An ab initio study of Se-reacted GaAs(0 0 1) surfaces

1998 ◽  
Vol 184-185 (1-2) ◽  
pp. 80-84 ◽  
Author(s):  
W Faschinger
Keyword(s):  
Ab Initio ◽  
Ab Initio Study

Carrier Transport in 2-D Materials: an Ab Initio Study

2019 ◽  
Author(s):  
Mathieu Luisier ◽  
Aron Szabo ◽  
Cedric Klinkert ◽  
Christian Stieger ◽  
Martin Rau ◽  
...  
Keyword(s):  
Ab Initio ◽  
Carrier Transport ◽  
Ab Initio Study

Ion solvation by dipolar aprotic solvents. An ab initio study

1987 ◽  
Vol 52 (1) ◽  
pp. 6-13 ◽  
Author(s):  
Petr Kyselka ◽  
Zdeněk Havlas ◽  
Ivo Sláma
Keyword(s):  
Ab Initio ◽  
Geometry Optimization ◽  
Molecular Structures ◽  
Dimethyl Sulphoxide ◽  
Ion Solvation ◽  
Interaction Energies ◽  
Ab Initio Study ◽  
Solvation Energies ◽  
Dipolar Aprotic Solvents ◽  
Complete Geometry Optimization

The paper deals with the solvation of Li+, Be2+, Na+, Mg2+, and Al3+ ions in dimethyl sulphoxide, dimethylformamide, acetonitrile, and water. The ab initio quantum chemical method was used to calculate the solvation energies, molecular structures, and charge distributions for the complexes water···ion, acetonitrile···ion, dimethyl sulphoxide···ion, and dimethylformamide···ion. The interaction energies were corrected for the superposition error. Complete geometry optimization was performed for the complex water···ion. Some generalizations are made on the basis of the results obtained.

An ab initio study of the structural and mechanical alterations of Ti-Nb alloys

2018 ◽  
Vol 124 (24) ◽  
pp. 245102 ◽  
Author(s):  
J. J. Gutiérrez Moreno ◽  
D. G. Papageorgiou ◽  
G. A. Evangelakis ◽  
Ch. E. Lekka
Keyword(s):  
Ab Initio ◽  
Ab Initio Study

Ab initio study of pentacene on Au(001) surface

2005 ◽  
Vol 589 (1-3) ◽  
pp. 8-18 ◽  
Author(s):  
Kyuho Lee ◽  
Jaejun Yu
Keyword(s):  
Ab Initio ◽  
Ab Initio Study
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