Advanced Materials Characterization Techniques

The work presented here was motivated by the need to develop a predictive model for thermodynamic stabilization of binary alloys that is applicable to strongly segregating size-misfit solutes, and that can use available input data for a wide range of solvent-solute combinations. This will serve as a benchmark for sele…

• HASAN KOTAN

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• MEHMET YILDIRIM

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• HASAN KOTAN

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Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

Density functional theory in combination with genetic algorithm is applied to determine the atomic models of p(1x2) and p(1x3) surface structures observed upon oxygen adsorption on a Mo(112) surface. The authors' simulations reveal an unusual flexibility of Mo(112) resulting in oxygen-induced reconstructions and lead…

• SARP KAYA

Ligand exchange reactions important in the formation of L 3 - and L 5 -protected gold clusters (L 3 = 1,3-bis(diphenylphosphino)propane; L 5 = 1,5-bis(diphenylphosphino)pentane) are investigated at the molecular level. We establish that molecular complexes, [Au(PPh 3 ) x L 2- x n ] +, in which Au + is bound to at leas…

• ORKİDE COŞKUNER WEBER

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• ORHAN ZEYBEK

An investigation of the frictional behavior of platinum nanoparticles laterally manipulated on graphite has been conducted to answer the question of whether the recent observation of structural superlubricity under ambient conditions [E. Cihan, S. İpek, E. Durgun, and M. Z. Baykara, Nat. Commun. 7, 12055 (2016)] is ex…

• SEMRAN İPEK

An investigation of the frictional behavior of platinum nanoparticles laterally manipulated on graphite has been conducted to answer the question of whether the recent observation of structural superlubricity under ambient conditions [E. Cihan, S. İpek, E. Durgun, and M. Z. Baykara, Nat. Commun. 7, 12055 (2016)] is ex…

• ENGİN DURGUN

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• HASAN KOTAN

High-entropy alloys and even medium-entropy alloys are an intriguing class of materials in that structure and property relations can be controlled via alloying and chemical disorder over wide ranges in the composition space. Employing density-functional theory combined with the coherent-potential approximation to aver…

• SEZER PIÇAK