In the present study, molecular dynamics simulations have been utilized to provide fundamental understanding of melting behavior of pure Pd and Pt nanoparticles with the size of 10 nm in diameter, both free and graphene-supported during continuous heating. The embedded atom method is employed to model the metal-metal interactions, whereas a Lennard-Jones potential is applied to describe the met...

State-of-the-art melting of tantalum and tantalum alloys has relied on electron beam (EB) or vacuum arc remelting (VAR) for commercial ingot production. Plasma arc melting (PAM) provides an alternative for melting tantalum that contains very high levels of interstitials where other melting techniques can not be applied. Previous work in this area centered on plasma arc melt quality and final in...

Progress in development of thermodynamically based models of straint on the thermal state of the Earth’s upper mantle (e.g. Klein & Langmuir, 1987; McKenzie & Bickle, 1988; silicate equilibria with explicit entropy budgets has motivated a reexamination of the conclusion of McKenzie that isentropic upwelAsimow et al., 2001). Meaningful interpretation of these data, however, requires a thorough u...

Genotyping by amplicon melting is a minimalistic approach to geno-typing, requiring only PCR, a fluorescent DNA dye, and single-color acquisition of a melting curve in a closed tube. Multiplex genotyping for the F5 1 [coagulation factor V (proaccelerin, labile factor)] Le-iden (1691GϾA), F2 [coagulation factor II (thrombin)] 20210GϾA, and MTHFR [methylenetetrahy-drofolate reductase (NAD(P)H)] 1...

Many applications of nanotubes and nanowires require controlled bottom-up engineering of these nanostructures. In catalytic chemical vapor deposition, the thermo-kinetic state of the nanocatalysts near the melting point is one of the factors ruling the morphology of the grown structures. We present theoretical and experimental evidence of a viscous state for nanoparticles near their melting poi...

Heat capacities have been determined for unsupported aluminum clusters, Al49(+) - Al63(+), from 150 to 1050 K. Peaks in the heat capacities due to melting occur between 450 and 650 K (well below the bulk melting point of 933 K). The peaks for Al+51 and Al+52 are bimodal, suggesting the presence of a premelting transition where the surface of the clusters melts around 100 K before the core. For ...