Surface relaxation and finite temperature properties of the (0001) Be surface are studied using many-body potentials and classical molecular dynamics method. The calculations show a large surface relaxation, in excellent agreement with experimental results. We obtain from the finite temperature simulations the melting point of bulk Be in good agreement with the experimental value. Thermal stabi...

Analyzing three approximate methods to locate liquid-solid coexistence in simple systems, an observation is made that all of them predict the same functional dependence of the temperature on density at freezing and melting of the conventional Lennard-Jones (LJ) system. The emerging equations can be written as T=Aρ(4)+Bρ(2) in normalized units. We suggest to determine the values of the coefficie...

BACKGROUND Common methods for identification of DNA sequence variants use gel electrophoresis or column separation after PCR. METHODS We developed a method for sequence variant analysis requiring only PCR and amplicon melting analysis. One of the PCR primers was fluorescently labeled. After PCR, the melting transition of the amplicon was monitored by high-resolution melting analysis. Differen...

High resolution melting is a new method of genotyping and variant scanning that can be seamlessly appended to PCR amplification. Limitations of genotyping by amplicon melting can be addressed by unlabeled probe or snapback primer analysis, all performed without labeled probes. High resolution melting can also be used to scan for rare sequence variants in large genes with multiple exons and is t...

Generation and motion of dislocations and twinning are the main mechanisms of plastic deformation. A new mechanism of plastic deformation and stress relaxation at high strain rates (10(9)-10(12) s(-1)) is proposed, under which virtual melting occurs at temperatures much below the melting temperature. Virtual melting is predicted using a developed, advanced thermodynamic approach and confirmed b...

Latent heat storage (LHS) technologies adopting phase change materials (PCMs) are increasingly being used to bridge the spatiotemporal mismatch between energy production and demand, especially in industries like solar power, where strong cyclic fluctuations exist. The shell-and-tube configuration is among the most prevalent ones in LHS and thus draws special attention from researchers. This pap...

In a beautiful experiment Williamson, Mourou, and Li' have measured directly the time it takes for the solid-liquid transition of a free-standing aluminum film. This was done by a direct measurement of the disappearence of electron diffraction patterns after the application of a short laser pulse. The results are interpreted' as due to an expansion of a critical nucleus of the melt throughout t...

In this paper, we study the liquid-solid coexistence of NaCl-type alkali halides, described by interaction potentials such as Tosi-Fumi (TF), Smith-Dang (SD), and Joung-Cheatham (JC), and compute their melting temperature (T(m)) at 1 bar via three independent routes: (1) liquid/solid direct coexistence, (2) free-energy calculations, and (3) Hamiltonian Gibbs-Duhem integration. The melting point...

The subject of vortex dynamics in high Tc superconductors is of topical interest [1,2]. In recent years, new aspects of the phase diagram of the vortex lattice have been elucidated through experiment. Perhaps one of the salient recent experimental findings is the first order melting transition of the vortex lattice, first observed in transport measurements [3] and later confirmed in a number of...

PURPOSE The emergence of thermal modalities has promoted the use of heat-sensitive phantoms for calibration, measurement, and verification purposes. However, development of durable phantoms with high precision ability to represent the temperature distribution remains a challenge. This study aims to introduce a reusable phantom that provides an accurate assessment of the heated region in various...