Abstract
In the presented work, the propagation of thermal-plasma-mechanical waves of an elastic microelongated semiconductor medium is studied. A novel model describes the interference between waves under the influence of a rotational field when the medium’s thermal conductivity is variable. Thermal conductivity is selected based on the temperature when the microelongated semiconductor medium is in an excited state. The microelongation parameters of the medium are taken into account according to the microelement transport processes for the micropolar-photo-thermoelasticity theory. The governing equations are investigated in two dimensions (2D) when the main quantities are taken dimensionless. To add, harmonic wave analysis is employed to obtain complete analytical solutions of the main physical fields when some boundary conditions are chosen at the medium surface. The influence of physical fields variables is analyzed and illustrated graphically for silicon (Si) material in different values of variable thermal conductivity, thermal relaxation times and rotation parameters.
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Abbreviations
- \(\lambda ,\,\,\mu \quad \quad \;\) :
-
Lame’s elastic semiconductor parameters.
- \(\delta_{n} = (3\lambda + 2\mu )d_{n}\) :
-
The deformation potential difference
- \(\underline{n}\) :
-
Unit vector in the direction of y-axis
- \(T_{0} \;\) :
-
Reference temperature in its natural state
- \(\hat{\gamma } = (3\lambda + 2\mu )\alpha_{{t_{1} }}\) :
-
The volume thermal expansion
- \(\sigma_{ij}\) :
-
The microelongational stress tensor
- \(\rho \quad \quad\) :
-
The density of the microelongated sample
- \(\alpha_{{t_{1} }}\) :
-
Coefficients of linear thermal expansion
- \({\text{e}}\) :
-
Cubical dilatation
- \(C_{e}\) :
-
Specific heat of the microelongated material
- \(K\) :
-
The thermal conductivity
- \(D_{E}\) :
-
The carrier diffusion coefficient
- \(\tau\) :
-
The photogenerated carrier lifetime
- \(E_{g}\) :
-
The energy gap
- \(e_{ij}\) :
-
Components of strain tensor
- \(\Pi ,\Psi\) :
-
Two scalar functions
- \(j_{0}\) :
-
The microinertia of microelement
- \(a_{0} ,\,\alpha_{0} ,\lambda_{0} ,\lambda_{1}\) :
-
Microelongational material parameters
- \(\tau_{0} ,\nu_{0}\) :
-
Thermal relaxation times
- \(\varphi\) :
-
The scalar microelongational function
- \(m_{k}\) :
-
Components of the microstretch vector
- \(s = s_{kk}\) :
-
Stress tensor component
- \(\delta_{ik}\) :
-
Kronecker delta
- \(\underline{\Omega } = \Omega \underline{n}\) :
-
Angular velocity
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Acknowledgments
The authors extend their appreciation to Princess Nourah bint Abdulrahman University for fund this research under Researchers Supporting Project number (PNURSP2022R154) Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia. Acknowledgment 2: The authors are thankful to Taif University. This paper was funded by Taif University Researchers Supporting Project number (TURSP-2020/16), Taif University, Taif, Saudi Arabia.
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El-Sapa, S., Gepreel, K.A., Lotfy, K. et al. Impact of Variable Thermal Conductivity of Thermal-Plasma-Mechanical Waves on Rotational Microelongated Excited Semiconductor. J Low Temp Phys 209, 144–165 (2022). https://doi.org/10.1007/s10909-022-02766-0
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DOI: https://doi.org/10.1007/s10909-022-02766-0