Thin films of various materials are deposited onto the surface of bulk materials (substrates) to achieve properties unattainable in the substrates alone.1 Among the various types of thin films, those with single crystal quality and in registry with the crystallographic orientation of the substrate are called epitaxial films. They have enormous importance especially in the semiconductor industry...

Kahang Cu Porphyry deposit is situated in the central part of a major Iranian magmatic belt, Urumieh-Dokhtar, in central Iran.There are several sub-volcanic stocks (e.g., porphyric granitoids rocks, quartz monzonite, diorite and monzodiorite-monzogranite)within Eocene volcanic and pyroclastic rocks consisting of basaltic, trachy-andesite and dacitic rocks. Hydrothermal alterations at the Kahang...

Phonon lifetimes in Cu, Ag, and Au at low and high temperatures were calculated along high symmetry directions using density functional theory combined with second-order perturbation theory. Both harmonic and third-order anharmonic force constants were computed using a supercell small displacement method, and the two-phonon densities of states were calculated for all three-phonon processes cons...

a Materials Science and Engineering Program, The University of Texas at Austin, Austin, TX 78712, United States b Department of Chemistry and the Institute for Computational Engineering and Sciences, The University of Texas at Austin, Austin, TX 78712, United States c Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, United States d Departme...

Alkene selective oxidation is of major technological importance since alkene epoxides are versatile chemical intermediates used in the manufacture of a wide range of commodity and fine chemicals. The reaction itself is mechanistically very interesting and it has attracted a lot of the academic interest over many years. Various models have been proposed in order to explain why the reaction is ap...

The dinuclear Pt-Au complex [(CNC)(PPh3)PtAu(PPh3)](ClO4) (2) (CNC = 2,6-diphenylpyridinate) has been prepared. Its crystal structure shows a rare metal-metal bonding situation, with very short Pt–Au and Au-Cipso(CNC) distances and dissimilar Pt-Cipso(CNC) bonds. Multinuclear NMR spectra of 2 show the persistence of the Pt–Au bond in solution and the operation of an unusual fluxional behavior i...

A variety of experimental techniques are used to resolve energetically close isomers of Au(7)(-) and Au(8)(-) by combining photoelectron spectroscopy and ab initio calculations. Two structurally distinct isomers are confirmed to exist in the cluster beam for both clusters. Populations of the different isomers in the cluster beam are tuned using Ar-tagging, O(2)-titration, and isoelectronic atom...

Metallic nanowires (Au, Ag, Cu, Ni, Co, and Rh) with an average diameter of 40 nm and a length of 3-5 μm have been fabricated by electrodeposition in the pores of track-etched polycarbonate membranes. Structural characterizations by transmission electron microscopy (TEM) and electron diffraction showed that nanowires of Au, Ag, and Cu are single-crystalline with a preferred [111] orientation, w...

In this talk I present new STAR results on measurements of integrated elliptic flow at midrapidity in Au+Au and Cu+Cu collisions at √ sNN =200 and 62 GeV energies. These results have been obtained from azimuthal correlations between particles in the main STAR TPC and two forward TPCs, and are to a large extent free from so-called non-flow correlations. These results along with the previously re...