Article history: Received 23 November 2016 Received in revised form 3 March 2017 Accepted 12 April 2017 Available online 19 April 2017 The normalization approach has been accepted as a routine to overcome the concentration discontinuity at multi-material interfaces in the moisture diffusion simulation by the finite element method. However, applying the normalization approach directly in the com...

The fast contraction, or pinching, of optical vortices in both thermal and Kerr self-defocusing media is investigated by numerical techniques. For the thermal case, heat diffusion across the vortex core is described, and the heretofore unexplained stability of optical-vortex solitons in thermal media is explained. © 2001 Optical Society of America OCIS codes: 190.4420, 190.5940, 190.3270, 160.4...

diffusion weighted imaging uses the signal loss associated with the random thermal motion of water molecules in the presence of magnetic field gradients to derive a number of parameters that reflect the translational mobility of the water molecules in tissues. with a suitable experimental set-up, it is possible to calculate all the elements of the local diffusion tensor (dt) and derived paramet...

Infrared photo detectors have vast and promising applications in military,industrial and other fields. In this paper, we present a method for improving theperformance of an infrared photodetector based on an InSb substance. To achieve goodperformance at high temperatures, thermal noise and intrusive currents should bereduced. For this purpose, a five-layer hetero structu...

Through this paper, we investigated the unsteady free convection flow of a Casson fluid bounded by a moving vertical flat plate in a rotating system with convective boundary conditions. The governing equations of the flow have been solved analytically using perturbation technique. The effects of various non-dimensional governing parameters like Casson parameter, magnetic field parameter, therma...

A significant improvement of the quality factor Q0 from values of 1.5×10 10 to values around 3×10 10 at 1.8 K has been repeatedly achieved in a fully dressed and horizontally operated TESLA type SRF cavity by limited thermal cycling, i.e. heating the cavity briefly above the 9.2 K transition temperature of niobium and subsequent cooling. Conceivable explanations for this effect include (a) chan...

Abs t r ac t . We present computational aspects of a parallel implementation of a multi-species thermal lattice gas. This model, which can be used to simulate reaction-diffusion phenomena in a mixture of different fluids, is analyzed for a fluid system at global equilibrium. Large system sizes combined with long-time simulation makes parallelization a necessity. We show that the model can be ea...

This paper studies how boron transient enhanced diffusion (TED) and boron thermal diffusion in Si1 Ge are influenced by a high-energy fluorine implant at a dose in the range 5 10 14 cm 2 to 1 10 cm . Secondary ion mass spectroscopy (SIMS) profiles of boron marker layers are presented for different fluorine doses and compared with fluorine SIMS profiles and transmission electron microscopy (TEM)...

A plasma polymerization process using a continuous glow discharge has been implemented for preparing proton conducting membranes from trifluoromethane sulfonic acid and styrene. The chemical and physical structure of plasma membranes has been investigated using FTIR and SEM. The films are homogeneous with a good adhesion on commercial gas diffusion layer (E-Tek). Their deposition rate can be in...