Moh'd Yasein

Bio: Moh'd Yasein is an academic researcher from Hashemite University. The author has contributed to research in topics: Jones polynomial & Free surface. The author has an hindex of 3, co-authored 8 publications receiving 35 citations. Previous affiliations of Moh'd Yasein include Northern Borders University & Arab Academy for Science, Technology & Maritime Transport.

The influence of variable thermal conductivity of semiconductor elastic medium during photothermal excitation subjected to thermal ramp type

Abstract: In this article, the photothermal excitation and thermal conductivity of a semiconducting elastic medium due to variable temperature effect are studied. The dual-phase-lag (DPL) model and Lord-Shulman (LS) theory are used to formulate and discuss the one dimensional governing equations of the problem. The thermal ramp type and traction free at the free surface are applied, in the context of the photogenerated (plasmaelastic) processes. The complete solutions for some physical fields are obtained using the Laplace transform method. Comparisons between the results of thermal memory and variable thermal conductivity are also introduced. The effects of the medium physical fields are illustrated and discussed graphically.

Effect of magneto-rotator-diffusive waves on the photothermal excitation medium of a dual-phase-lag model and variable thermal conductivity

Abstract: The thermal variable conductivity of a rotator semiconductor elastic medium is investigated. The medium is exposed to beams of light and an initial external magnetic field during a diffusion proces...

Response of Thermo- Electro-Magneto Semiconductor Elastic Medium to Photothermal Excitation Process with Thomson Influence

Abstract: The effect of Thomson heating of semiconductor medium is studied. Analytical discussions are made in the presence of thermoelectricity theory and magnetic field in context of Photothermal transport process. The interactions between plasma, thermoelectric, electromagnetic and elastic waves are taken into consideration. The governing equations are investigated in two dimensional deformations of homogenous, isotropic medium. The density of charge is taken as a function of time only of the induced electric current. The normal mode technique is used to obtain the physical quantities field under investigation. Some electro-mechanical loads and thermal effect through recombination process are applied on the free surface of semiconductor elastic medium. The distributions of physical fields in this phenomenon are discussed and represented graphically. The results have been discussed under the effect of thermoelectric parameter and Thomson parameter.

The Jones polynomial of rational links

Abstract: We use the Tutte polynomial to give an explicit formula for the Jones polynomial of any rational link in terms of the denominators of the canonical continued fraction of its slope.

The Jones polynomial of rational links

Abstract: We give an explicit formula for the Jones polynomial of any rational link in terms of the denominators of the canonical continued fraction of the slope of the given rational link.

Variable thermal conductivity and hyperbolic two-temperature theory during magneto-photothermal theory of semiconductor induced by laser pulses

Abstract: The main goal of this work is to investigate the interaction impact between three propagated waves. In this case, the elastic wave, plasma wave and thermal waves are obtained in the context of the hyperbolic generalized two-temperature theory. The governing equations are studied during the photothermal theory. The impact of external magnetic field and laser pulse are obtained which they fall on the outer surface of a semiconductor medium. The thermal conductivity of semiconductor material is investigated in a variable case. When the coupled between photothermal theory and thermoelasticity theory is occurred, three various models of the photo-thermoelasticity theory are obtained. The integral transforms technique in two-dimensional (2D) deformation is applied to solve the main equations. The double Fourier and Laplace transforms with some initial conditions are used as example of integral transforms technique. The inversion of the double transforms with some thermal-elastic-mechanical-plasma boundary conditions is applied numerically to obtain the complete solutions. Some comparisons during three various models in external magnetic field with variable thermal conductivity Si (silicon) material of photo-thermoelasticity theory are performed.

Hyperbolic Two-Temperature Photo-Thermal Interaction in a Semiconductor Medium with a Cylindrical Cavity

Abstract: Photo-thermal-elastic interactions in an unbounded semiconductor media containing a cylindrical hole under a hyperbolic two-temperature are investigated using the coupled theory of thermo-elasticity and plasma waves. A new hyperbolic two-temperature model is used to study this problem. The internal surface of the cylindrical cavity is loaded by exponentially decaying pulse boundary heat flux and traction free. The Laplace transform technique are presented to obtain the exact solutions of this problem in the transformed domains by the eigenvalue approach. The inverse of Laplace transforms was numerically carried. The results show that the analytical solutions can overcome the mathematical problems to analyzes this problem. According to the numerical outcomes, the hyperbolic two-temperature thermoelastic theory offers finite velocity of the mechanical waves and thermal waves propagations.

Photo-Thermal Interactions in a Semiconducting Media with a Spherical Cavity under Hyperbolic Two-Temperature Model

Abstract: This article highlights the study of photo-thermoelastic interaction in an unbounded semiconductor medium containing a spherical cavity. This problem is solved using the new hyperbolic two-temperature model. The bounding surface of the cavity is traction free and loaded thermally by exponentially decaying pulse boundary heat flux. In addition, the carrier density is prescribed on the inner surface of the cavity in terms of the recombination speed. The techniques of Laplace transforms are used to get the analytical solutions of the problem in the transformed domain by the eigenvalues method. The inversions of Laplace transformations have been carried out numerically. The outcomes also display that the analytical schemes can overcome the mathematical problem to analyze this problem. Numerical outcomes for a semiconductor material are performed and demonstrated graphically. According to the numerical results, this new hyperbolic two-temperature model of thermoelasticity offers finite speed of the thermal wave and mechanical wave propagation.