In this work, three-terminal ballistic junctions, made of three-branch graphene nanoribbons (GNRs), are considered and simulated at the nanometric scale. The analysis is carried out by a scattering matrix approach, in a discrete formulation optimized for GNR devices. The ballisticity and the scattering properties of the junction contribute to the nonlinear behaviour, as, in fact, a sinusoidal v...

The literature describing scattering matrices for semianalytical methods almost exclusively contains inefficient formulations and formulations that deviate from long-standing convention in terms of how the scattering parameters are defined. This paper presents a novel and highly improved formulation of scattering matrices that is consistent with convention, more efficient to implement, and more...

The theoretical formulation of the variational bounds on scattering parameters is briefly reviewed. The upper and lower bounds on scattering parameters are realized by the manner in which the distortion of the target during the scattering is treated, in terms of the static and adiabatic pictures. The variational bounds are obtained by gradually improving the trial functions that describe the ta...

A new approach to the inverse-scattering technique of Alekseev is presented which permits real-pole soliton solutions of the Ernst equations to be considered. This is achieved by adopting distinct real poles in the scattering matrix and its inverse. For the case in which the electromagnetic field vanishes, some explicit solutions are given using a Minkowski seed metric. The relation with the co...

slab method of analysis has been used for solving metal forming problems for a long time. however it has been restricted to plane strain and axisymmetric problems due to limitations in its formulations. in this paper a new formulation has been proposed so that it could be applied to three dimensional problems in metal forming. a parametric slab has been considered in this analysis and the force...

In this paper, size dependent beam type peizoelectric energy hardvester is investigated. For this goal, first nonlinear formulation of isotropic piezoelectric Euler-Bernoulli nano-beam is developed based on the size-dependent piezoelectricity theory then special beam type piezoelectric energy hardvester is probed for different parameters. Basic nonlinear equations of piezoelectric nano-beam are...

Background: Treating infertility doesn’t merely deal with advanced medical procedures. The effects of most of herbal drugs is not clearly established on fertility potential. One of this herbal formula is NOFODA comprising of Orchis mascula, Tribulus terrestris, Amygdalus communis, Ficus carica, Allium ampeloprasum, Nasturtium officinale and pollen of Phoenix dactylifera. In this study, the effe...

glimepiride/metformin(2/500mg) is an oral antihyperglycemic agent for the treatment of type 2 diabetes. a generic glimepiride/metformin(2/500mg) fixed-dose combination(fdc) tablet was developed recently. this study was designed to collect data for submission to korean regulatory authorities to allow the marketing of the test formulation. we evaluated the comparative bioavailability and tolerabi...

the aim of this study was to investigate the processing methods of sorghum grain and diet formulation on performance and nutrients digestibility in broilers. three hundred and twenty chicks at eight day of age were allotted into eight groups of four replicate with ten chicks per replicate. this research was conducted as completely randomized design arranged in a 2 × 2 × 2 factorial experiment u...