Search Results - "Evangelakis, G.A."

Ab-initio and experimental study of phase stability of Ti-Nb alloys by Gutiérrez Moreno, J.J., Bönisch, M., Panagiotopoulos, N.T., Calin, M., Papageorgiou, D.G., Gebert, A., Eckert, J., Evangelakis, G.A., Lekka, Ch.E.

“…A systematic theoretical and experimental study concerning the crystallographic structure and electronic properties of Ti-xNb (x < 50 at%) alloys is presented,…”
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Probing the structure of a liquid metal during vitrification by Georgarakis, K., Hennet, L., Evangelakis, G.A., Antonowicz, J., Bokas, G.B., Honkimaki, V., Bytchkov, A., Chen, M.W., Yavari, A.R.

“…Using aerodynamic levitation, vitrification of a ternary Zr-Cu-Al alloy was observed in-situ by high energy synchrotron radiation X-ray diffraction in the…”
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On the microstructure of the Cu65Zr35 and Cu35Zr65 metallic glasses by Almyras, G.A., Lekka, Ch.E., Mattern, N., Evangelakis, G.A.

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Bonding characteristics and strengthening of CuZr fundamental clusters upon small Al additions from density functional theory calculations by Lekka, Ch.E., Evangelakis, G.A.

“…We report on density functional theory results referring to the bonding characteristics and the strengthening induced by small Al additions in representative…”
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Clustering, microalloying and mechanical properties in Cu/Zr-based glassy models by molecular dynamics simulations and ab-initio computations by Lekka, Ch.E., Bokas, G.B., Almyras, G.A., Papageorgiou, D.G., Evangelakis, G.A.

“…[Display omitted] ► Cu–Zr MGs consist of interpenetrating ICO-like clusters (superclusters (SCs)). ► The SCs participate in the accommodation of the tensile…”
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Structural characteristics of CuxZr100―x metallic glasses by Molecular Dynamics Simulations by LAGOGIANNI, A. E, ALMYRAS, G, LEKKA, Ch. E, PAPAGEORGIOU, D. G, EVANGELAKIS, G. A

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Effect of fins and nanoparticles in the discharge performance of PCM thermal storage system with a multi pass finned tube heat exchange by Pássaro, João, Rebola, A., Coelho, L., Conde, J., Evangelakis, G.A., Prouskas, C., Papageorgiou, D.G., Zisopoulou, A., Lagaris, I.E.

“…This work studies the heat exchange process of a latent heat thermal energy storage (LHTES) system equipped with a compact finned tubes heat exchanger (HE) as…”
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Development of Ti-based nanocomposite oxide thin films with CuO and Nb2O5 additions suitable for catalytic applications by Agrafioti, K.A., Panagiotopoulos, N.T., Moularas, C., Deligiannakis, Y., Prouskas, C., Soukouli, P.P., Evangelakis, G.A.

“…•Rapid oxidation of Ti and Ti57Cu26Nb17 thin films by oxygen plasma.•Formation of TiO2-based thin film with stabilized anatase and rutile TiO2 phases.•Higher…”
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Molecular Dynamics study of Cu and Au 2D adlayers on the Cu3Au(1 1 1 0) surface by PAPAGEORGIOU, D. G, LEKKA, Ch. E, EVANGELAKIS, G. A

“…We present Molecular Dynamics simulation results concerning the structural properties of Cu and Au 2D adlayers on the Cu3Au(1 1 0) surface. We found that at…”
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Microstructure and nanomechanical properties of magnetron sputtered Ti−Nb films by Photiou, D., Panagiotopoulos, N.T., Koutsokeras, L., Evangelakis, G.A., Constantinides, G.

“…Titanium niobium (Ti−Nb) films, covering a broad spectrum of compositions, are deposited on silicon substrates using magnetron co-sputtering. The…”
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The atomistic mechanism of fast relaxation processes in Cu65Zr35 glass by Palomino Rico, P., Papageorgiou, D.G., Greer, A.L., Evangelakis, G.A.

“…Molecular-dynamics simulations of the glass Cu65Zr35 show a rattling mode of atomic motion. While the frequency of the rattling mechanism is essentially…”
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Tensile deformation accommodation in microscopic metallic glasses via subnanocluster reconstructions by Lekka, Ch. E., Ibenskas, A., Yavari, A. R., Evangelakis, G. A.

“…We present results on the structure and the atomistic mechanisms for tensile deformation accommodation of the Cu46Zr54 microscopic metallic glass. At…”
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Molecular dynamics study of gold adatom diffusion on low-index copper surfaces by Evangelakis, G.A., Kallinteris, G.C., Papanicolaou, N.I.

“…The transport properties of single Au adatoms on low-index Cu surfaces have been studied using molecular dynamics. We found that on the Cu(001) face, the…”
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Microalloying effects in ternary Cu-Zr-X (X=Be, Mg, Al, Si, P, Nb, Ag) icosahedral clusters and super-clusters from Density Functional Theory computations by Bokas, G.B., Lekka, Ch.E., Papageorgiou, D.G., Evangelakis, G.A.

“…A small topological change at the systems results in hybridizations with different type of electrons at the high energies. Charge transfer found from s to p…”
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Anticorrosive AlN coatings for heat exchangers in thermal energy storage systems by Panagiotopoulos, N.T., Lekatou, A.G., Agrafioti, K.A., Prouskas, C.C., Koukou, M.K., Konstantaras, J., Lymperis, K., Vrachopoulos, M.Gr, Evangelakis, G.A.

“…•Magnetron sputtered thermally conductive aluminum nitride (AlN) coatings.•Anticorrosive protection for engineering applications related to thermal…”
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The role of Sn doping in the β-type Ti–25at%Nb alloys: Experiment and ab initio calculations by Gutiérrez-Moreno, J.J., Guo, Y., Georgarakis, K., Yavari, A.R., Evangelakis, G.A., Lekka, Ch.E.

“…•β-Ti–25at%Nb–xSn, x<25at% were synthesized and studied by ab initio calculations.•The Sn substitution results in lattice constant increase.•The Sn sp-electron…”
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Surface properties of the Cu50Zr50 metallic glass decorated with icosahedral Cu Zr100− (0 <x< 100) clusters by molecular dynamics simulations by Lagogianni, A.E., Papageorgiou, D.G., Evangelakis, G.A.

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Adlayer deposition induced surface crystallization of Cu 46Zr 54 bulk metallic glass by Papageorgiou, D.G., Evangelakis, G.A.

“…We present molecular dynamics simulation results on the surface modifications of Cu 46Zr 54 bulk metallic glass (BMG) that may occur upon deposition of Zr or…”
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Molecular dynamic simulations of Zr 2Ni(1 0 0) surface in presence of Ni or Zr adatoms by Lekka, Ch.E., Evangelakis, G.A.

“…We present molecular dynamics simulations results concerning the structural, vibrational and diffusive properties of Zr or Ni adatoms on the Zr 2Ni(1 0 0)…”
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Surface properties of the Cu 50Zr 50 metallic glass decorated with icosahedral Cu x Zr 100− x (0 < x < 100) clusters by molecular dynamics simulations by Lagogianni, A.E., Papageorgiou, D.G., Evangelakis, G.A.

“…Snapshot showing an equilibrated 923 atoms Zr Icosahedral cluster on the glassy surface. It can be seen that the cluster preserves its structural…”
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