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ORIGINAL RESEARCH article

Front. Phys., 30 October 2023
Sec. Mathematical Physics

A changeable thermal conductivity and optoelectronic-mechanical wave behavior in a microelongated, non-locally rotating semiconductor media

Alwaleed KamelAlwaleed Kamel1Weaam AlhejailiWeaam Alhejaili2Wafaa HassanWafaa Hassan3Alaa A. El-Bary,Alaa A. El-Bary4,5Khaled Lotfy,
Khaled Lotfy6,7*
  • 1Department of Mathematics, Faculty of Science, Islamic University of Madinah, Madinah, Saudi Arabia
  • 2Department of Mathematical Sciences, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
  • 3Physics and Engineering Mathematics Department, Faculty of Engineering, Port Said University, Port Said, Egypt
  • 4Arab Academy for Science, Technology and Maritime Transport, Alexandria, Egypt
  • 5Council of Future Studies and Risk Management, Academy of Scientific Research and Technology, Cairo, Egypt
  • 6Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, Egypt
  • 7Department of Mathematics, Faculty of Science, Taibah University, Madinah, Saudi Arabia

In this study, we investigate the effect of a rotation field on a homogeneous photo-thermoelastic nonlocal material and how its thermal conductivity changes as a result of a linearly distributed thermal load. The thermal conductivity of an interior particle is supposed to increase linearly with temperature. Microelastic, non-local semiconductors are used to model the problem in accordance with optoelectronic procedures, as proposed by the thermoelasticity theory. The micropolar-photo-thermoelasticity theory takes into account the medium’s microelongation properties in accordance with the microelement transport processes. This mathematical model is solved in two dimensions (2D) using harmonic wave analysis. Dimensionless components of displacement, temperature, microelongation, carrier density, and stresses are generated when the non-local semiconductor surface is subjected to the right boundary conditions. For silicon (Si) material, the wave propagation impact of the main physical fields is examined and graphically shown for various values of variable thermal conductivity, thermal relaxation durations, nonlocality, and rotation parameters.

1 Introduction

The classical theory of continuum mechanics, which regards matter as continuous, can only describe solids’ macroscale mechanical behavior since microstructures are microelements. Microinertia must be accounted for in continuum mechanics since macroscopic and microscopic scales must be considered. To conclude, thermoelasticity requires semiconductors to be elastic. Because thermoelastic and electrical deformations are linked. The ED is based on semiconductor crystal lattice photo-generation theory. Semiconductors microelongate because their internal resistance lowers with temperature. In light of the aforementioned, it is crucial to study how light’s thermal energy affects the material’s microelongation and microinertia. The photothermal (PT) theory states that transition phases promote free electrons on surfaces.

The idea of micro-elongation within the context of classical deformation posits that the micro-elongated medium can be classified into various typologies. The aforementioned examples encompass solid-liquid crystals, composite materials comprising elastic fibers, and porous media featuring pores filled with either gaseous or non-viscous fluids. The findings suggest that the expansion of material particles at the micro-scale exhibits volumetric characteristics. The material sites within the deformation medium undergo individual contraction and stretching. The semiconductor’s internal structure experiences various modifications in response to the thermal impact of light, as well as the shown microelongation parameters. Microelongation is dependent on thermal deformation, whereas the last one is dependent on electronic deformation based on electron rotation (micropolar) [1]. When studying the semiconductor materials in this scenario, the microstretch and micropolar theories are taken into account. When the directions of freedom of electrons are orthogonal and contraction, the microelongational theory arises as a specific instance of the microstretch theory. When considering the microstructure of the solid medium, Ref. [2, 3] introduced a unique microstretch-thermoelasticity model based on the micropolar theory. The generalized microstretch thermoelasticity theory [48] is used to investigate the many uses of elastic bodies. In the case of the Casson fluid flow of the porous medium, several applications of the microstretch theory are used for hydrodynamics [9, 10]. On the other hand, Ref. [11] investigated some viscoelastic conditions for the flow layer of a viscoelastic porous medium with a single relaxation period. To study the microelongated elastic media and determine wave propagation within an elastic medium, the impact of the internal heat source is applied [12, 13]. To understand the microelongated governing equations of an elastic material, The research conducted by Ref. [1416] focused on analyzing the phenomenon of plane strain deformation along with the influence of an internal heat source. The micropolar theory of the elastic body is shown using the twofold porosity medium [17]. Reference [1820] used the finite element analysis and eigenvalues approach to investigate the thermoelastic interactions in an initially stressed porous medium. Reference [21, 22] studied the responses of conductive semi-solid thermoelectric surface and thermomagnetic according to a heat transfer of Moore–Gibson–Thompson (MGT) model subjected to variable thermal shock.

The investigation of semiconductor materials using photoacoustic and photothermal theory (PT) has gained acceptance in recent years [1, 2]. Effective personification was examined by many authors in their examination of photoacoustic and photothermal technology [2326]. This is made possible by using 2D deformation of the semiconductor material to examine how the photothermal and thermoelasticity theories interact [27]. According to ED, microcantilever methods are used to investigate the optical characteristics of semiconductor material [28, 54]. According to the photo-thermoelasticity theory of elastic semiconductor media, several researchers proposed some unique models with various applications that explain the interaction of mechanical, optical, thermal, and elastic waves [2934]. In the framework of the two-temperature theory, Ref. [35, 36] conducted a study on a novel model that describes the excitation processes based on the theory of photo-thermoelasticity. This model takes into account variations in the thermal conductivity of the elastic media used in semiconductors. The dual-phase lags model under photothermal interaction processes was employed by Ref. [37]. To represent the photothermal excitation processes, Ref. [38] explored the revised multi-dual phase-lags model. When analyzing the semiconductor medium in the context of photothermal transport processes, Ref. [39] considered the microstretch theory under the impact of rotation. On the other hand, Ref. [40] investigated the photo-microstretch theory for a semiconductor elastic medium using the electro-magneto-thermoelasticity theory. Reference [41] investigated a cylindrical gap of semiconductor medium according to fractional MGT heat model of photothermal-induced due to laser pulse.

Reference [42] developed the nonlocal elasticity hypothesis by applying the principles of global balancing rules and the second law of thermodynamics. The theory of nonlocal elasticity initially focused on studying screw dislocation and surface waves in solids [43]. Reference [44] examined how the Hall current affected the nonlocality semiconductor media to obtain the optical, elastic, thermal, and diffusive waves. On the other hand, Ref. [45] investigated the thermos-diffusion waves for nonlocal semiconductors utilizing the fractional calculus and the laser short-pulse effect. When the thermal conductivity is variable (depends on the heat), previous works on non-local semiconductors ignored the impact of micro-elongation parameters and rotating fields.

In the present work, an examination of the ED and TE deformation in accordance with microelongated (microelements) excited medium was carried out. This examination looked at the impact of non-local, rotation field, and altering thermal conductivity, as well as photo-thermomechanical. When the primary physical fields are chosen in dimensionless form, the governing equations are stated in terms of the two-dimensional deformation of the space. Normal mode analysis is carried out to get the comprehensive analytical solutions of the primary variables under study under certain conditions that exist at the medium boundary. Several graphs are used in order to compare the waves that are propagated by the physical field variables in four distinct contexts. These contexts include the influence of rotational parameters, the effect of thermal memory, non-local contexts, and changing thermal conductivity.

2 Mathematical basic equations

The four basic quantities in this model: carrier density N (photo-electronic according to the plasma wave propagation), the temperature T (thermal distribution), the elastic waves (displacement) ui and the scalar microelongational function φ) are presented in Cartesian coordinates (see Figure 1). The basic equations of non-local semiconductor medium are presented in 2D under the influence of a uniform rotating field (Ω_=Ωn_) which is rounded about the y-axis. In the absence of body forces, the field equations and constitutive relations for the homogeneous and isotropic non-local semiconductor medium with rotational with variable thermal conductivity are provided as:

FIGURE 1
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FIGURE 1. Geometry of problem.

1) The microelongated constitutive equations for non-local photo-thermoelasticity are [12, 54].

σiI=λoφ+λur,rδiI+2μuI,iγ^1+votTδiI3λ+2μdnNδiI,mi=a0φ,i,1ξ22σiI=σiI,s1ξ22σ=λoui,iγ^1+votT+3λ+2μdnNδ2i+λ1φ,ξ=ae0l..(1)

2) The coupled thermal-electronic equation is [28]:

N˙=DEN,iiNτ+κTτ.(2)

3) The equation of motion and the microelongation equation for non-local medium, as determined by the processes involving microelements, may be expressed as [46]:

λ+μuj,ij+μui,jj+λoφ,iγ^1+votT,iδnN,i=ρ1ξ22u¨i+ΩxΩxui+(2Ω_x u˙)i.(3)
αoφ,iiλ1φλouj,j+γ^11+votT=12jρφ.¨(4)

4) The non-local semiconductor medium’s microelongated heat conduction equation is [16]:

KT,i,iρCEn1+τotT˙γ^Ton1+noτotu˙i,i+EgτN=γ^1Toφ,˙(5)

where ˙=t, γ^1=3λ+2μαt2, κ=n0TTτ and ,i=xi.

Certainly, in the context of a non-local microelongated semiconductor material, it is indeed possible to consider the thermal conductivity as a variable that depends on temperature. This relationship can be expressed mathematically as a linear function where the thermal conductivity is directly proportional to temperature. In this instance, the thermal conductivity may be expressed as follows by the thermal impact of light beams [35, 36]:

KT=K01+πT.(6)

Where π0 is a small parameter. When the medium is not temperature-dependent, the physical constant K0 is the reference thermal conductivity. The integral version of Kirchhoff’s transform theory of temperature may be used to turn the nonlinear components in thermal conductivity into linear ones as [47]:

Θ=1K00TKRdR.(7)

The following quantities may be recast in space (xz-plane) and time t coordinates for the 2D deformation as: u=u=ux,z,t,0,w=wx,z,t;φ=φx,z,t.

The basic Eqs. 24 in 2D can be reduced as:

λ+μ2ux2+2wxz+μ2ux2+2uz2+λoφxγ^1+votTxδnNx=ρ1ξ222ut2Ω2u+2Ωwt,(8)
λ+μ2uxz+2wz2+μ2wx2+2wz2+λoφzγ^1+votTzδnNz=ρ1ξ222wt2Ω2w2Ωut,(9)
αo2φx2+2φz2λ1φλoe+γ^11+votT=12jρ2φt2,(10)

The selected parameters no,n1 and the thermal relaxation times govern the various photo-thermoelasticity models [coupled-dynamical (CD, n1=1,no=τo=vo=0), Lord and Shulman (LS, n1=no=1,vo=0,τo>0), and Green and Lindsay (GL, n1=1,no=0,voτo>0)] [3941]. The following differentiation relations indicate that Eqs. 6, 7 can be utilized to incorporate the thermal conductivity variable into calculations:

K0Θ,i=KTT,i,K0θt=KTTt,K0KTΘ,i=T,i,K0Θ,ii=KTT,i,i..(11)

When applying map transform and differentiation affects, Eq. 2 may be rewritten as follows:

tNxj=DEN,iixj1τNxj+κτTxj,tNxj=DEN,iixj1τNxj+κK0τKΘxj,tNxj=DEN,iixj1τNxj+κτΘxj..(12)

When the Taylor expansion was used to solve for the last component in the prior Eq. 13, the non-linear terms were ignored:

κK0τKΘxj=κK0K0τ1+πTΘxj=κτ1+πT1Θxj=κτ1πT+πT2.......)Θxj=κτΘxjκτπTΘxj+κτπT2Θxj.......=κτΘxj.(13)

Integrating Eq. 12 and using Eq. 13, yields:

Nt=DEN,ii1τN+κτΘ.(14)

In this case, the non-local microelongated heat Eq. 5 can be reduced using the map transform (7) as:

Θ,ii1kn1+τotΘtγ^ToK0n1+noτotu˙i,i+EgK0τN=γ^1T0K0φ.˙(15)

Where 1k=ρCEK0 expresses the thermal diffusivity of the medium.

To further simplify things, the dimensionless quantities, have the form:

N¯=δn2μ+λN,x¯i,ξ¯,u¯i=1ω*CTxi,ξ,ui,t¯,τ¯o,ν¯o=t,τo,νoω*,CT2=2μ+λρ,Θ¯=γ^Θ2μ+λ,σ¯ij=σij2μ+λ,φ¯=ρCT2Toγ^φ,ω*=K0ρCECT2,Π¯,ψ¯=Π,ψCTω*2,CL2=μρ,Ω¯=ω*Ω..(16)

The basic equations may be rewritten as follows using the dimensionless Eq. 16 (with dropping the superscripts):

2ε3ε2tN+ε4Θ=0,(17)
1ξ222ut2Ω2u+2Ωwt=λ+μρCT2ex+μρCT22u+Toγ^λoρCT22φx1+votΘxNx,(18)
1ξ222wt2Ω2w2Ωut=λ+μρCT2ez+μρCT22w+Toγ^λoρCT22φz1+votΘzNz,(19)
2C3C42t2φC5e+C61+votΘ=0,(20)
2Θn1+τotΘtεn1+noτotet+ε5N=ε1φt.(21)

The potential scalar Πx,z,t and the vector space-time Ψx,z,t=0,ψ,0 functions can be introduced in the following form:

u=gradΠ+curlΨ,u=Πxψz,w=Πz+ψx.(22)

Using Eq. 22, the main Eqs. 1821 can be represented as:

1+ξ22t22+Ω22t2Π+2Ωψt+1+votΘ+a1φN=0,(23)
1+ξ22t22a3Ω2a32t2ψa3*Πt=0,(24)
2C3C42t2φC52Π+C61+votΘ=0,(25)
2n1t+τo2t2Θεn1t+noτo2t22Π+ε5Nε1φt=0.(26)

The constitutive relations in 2D and dimensionless can be rewritten as [54]:

1ξ22σxx=ux+a2wz1+votΘN+a1φ,1ξ22σzz=a2ux+wz1+votΘN+a1φ,1ξ22σxz=a4uz+wx..(27)

Where

a1=Toγ^λoρCT22,a2=λρCT2,a3=ρCT2μ,ε=γ^2ω*ToK0ρ,ε1=γ^1γ^2ω*ToK0ρ2μ+λ,ε2=ω*CT2DE,a3*=2Ωa3,a4=μρCT2,C4=ρjCT22α0,ε3=ω*2CT2τDE,ε4=κdnω*2ρτDEαt1,ε5=Egγ^ω*2CT2τK0δn,C3=λ1CT2ω*2α0,C5=λoρCT4ω*2α0T0γ^,C6=γ^1ρω*2Toγ^α0.(28)

3 Normal mode technique

Any function Cx,z,t in 2D (which represents the main fields) is converted to a harmonic wave using the normal mode approach as follows [4448]:

Cx,z,t=C¯xeibzeωt.(29)

Where C¯x is the amplitude of the function Cx,z,t, in the z-direction the wave number is b and i=1. The complex frequency expresses ω=ω0+iζ, where ω0 and ζ are arbitrary parameters.

Using Eq. 29, the fundamental Eq. 17 and Eqs 2327 take the following form:

D2α1N¯+ε4Θ¯=0,(30)
D2A1Π¯+A9ψ¯+A2Θ¯+a1*φ¯a2*N¯=0,(31)
D2A3ψ¯A10Π¯=0,(32)
D2A4φ¯C5D2b2Π¯+A5Θ¯=0,(33)
D2A6Θ¯A7D2b2Π¯+ε5N¯A8φ¯=0,(34)
1ξ2D2b2σ¯xx=Du¯+iba2w¯A2Θ¯N¯+a1φ¯,1ξ2D2b2σ¯zz=a2Du¯+ibw¯A2Θ¯N¯+a1φ¯,1ξ2D2b2σxz=a4ibu¯+Dw¯..(35)

Where,

α1=b2+ε3+ε2ω,A1=b2+ω21+ξ2ω2Ω2,A3=b2+a3Ω2+a3ω21+ξ2ω2,A10=a3*ω1+ξ2ω2D=ddx,A4=b2+C3+C4ω2,A5=C61+νoω,A2=1+νoω1+ξ2ω2,a2*=11+ξ2ω2,A6=b2+n1ω+noτoω2,A7=εn1ω+noτoω2,A8=ε1ω,A9=2Ωω1+ξ2ω2,a1*=a11+ξ2ω2..(36)

Solving the system of Eqs. 3034, yields:

D10B1D8+B2D6B3D4+B4D2B5φ¯,N¯,Θ¯,Π¯,ψ¯=0.(37)

Where the coefficients of Eq. 37 are:

Β1=A2A7+C5a1*A1A3A4a2*A6α1,
Β2=A2A7C5a1*+A1+A3+A4+A6α1+b2A3A6C5A5A7a1*+A2A8C4+A5A8+b2A2A2A3A2A4+ε4A7+A1+A3+A4A6+a2*A1+A3A4+A1A3+A9A10ε4ε5,
Β3=C5a1*+A1+A3+A4ε4ε5+A7b2A3A4+A8C5ε4+(A2A3A8+A3A6a1*+A3A4A6A3+A4A9A10A5A8a2*+A7A5a1*+A2A3+A2A4+A2A7b2+b2a1*A4A8+A3a1+A6a1*C5A1A4A1A6A1A3)α1A1A4A6A3A5A8A1A5A8A6A9A10a2*A4A9A10+A7A2A3A4+A3A5a1*a2*A1A3A6A3A4A6+A7A2A3+A2A4+A5a1*b2+A2A8+A3+A6a1*b2)C5A1A3A4,
Β4=A3A6b2A3A6α1+A3A6+ε4ε5b2+A3ε4ε5C5+b2A5A7A3A5A7α1A3A5A7b2)a1*+b2A2A8+A2A3AA8α1+A2A3A8A8ε4b2A3A8ε4C5+A2A3A7A2A4A7b2+A1A3A6+A1A4A6+A1A5A8+A3A1A4+A5A8+A4A9A10+A3A4+A9A10A6A2A3A4A7)α1+A2A3A4A7+A3A7+A4A7ε4b2+A1A3(A4A6+A5A8)+A4A6A9+A5A8A9A10+A3A4A7a2*+A1A3A1A4A3A4A9A10ε5ε4,
Β5=A3A5A7+A3A6C5b2α1b2A3C5ε5ε4a1*+(A2A3A4A7A2A3A8C5b2A1A3A4A6+A5A8A4A6+a2*A5A8A9A10)α1+(A4A1A3+A9A10ε5+A3A4A7+A3A8C5b2)ε4.

Factorizing Eq. 37 with the roots kn2n=1,2,3,4,5:Rekn>0, yields:

D2k12D2k22D2k32D2k42D2k52Θ¯,N¯,Π¯,φ¯,ψ¯x=0,(38)

The solutions in linearity form for Eq. 37 are:

Θ¯x=i=15Qib,ωekix,(39)
φ¯x=i=15Qib,ωekix=i=15h1iQiekix,(40)
Π¯x=i=15Qib,ωekix=i=15h2iQiekix,(41)
N¯x=i=15Qib,ωekix=i=15h3iQiekix.(42)
ψ¯x=i=15Qib,ωekix=i=15h4iQiekix.(43)

Where Qi are unknown quantities, can be formulated and the other parameters take the following form:

h1i=A2C5+A5ki6+c8ki4+c9ki2+c10ki8+c4ki6+c5ki4+c6ki2+c7,h2i=A2ki6+c1ki4+c2ki2+c3ki8+c4ki6+c5ki4+c6ki2+c7,h3i=ε4ki2ε4,h4i=A2A10ki4+c11ki2+c12ki8+c4ki6+c5ki4+c6ki2+c7,
c1=A2A3A2A4A2α1A5a1+ε4,
c2=A2A3A4+A2A3α1+A2A4α1+A3A5a1+A5a1α1A3ε4A4ε4,
c3=A2A3A4α1A3A5a1α1+A3A4ε4,c4=C5a1A1A3A4α1,c5=b2C5a1A3C5a1C5a1α1+A1A3+A1A4+A1α1+A3A4+A3α1+A4α1+A9A10,c6=b2AC5a1+b2C5a1α1+A3C5a1α1A1A3A4A1A3α1A1A4α1A3A4α1A4A9A10A9A10α1,
c7=b2A3C5a1α1+A1A3A4α1+A4A9A10α1,
c8=(b2A2C5A2A3C5A2C5α1A1A5A3A5A5α1+C5ε4,
c9=b2A2A3C5+b2A2C5α1b2C5ε4+A2A3C5α1+A1A3A5+A1A5α1+A3A5α1A3C5ε4+A5AA9A10,c10=b2A2A3C5α1+b2A3C5ε4A1A3A5α1A5A9A10α1,c11=A10A2A4A2α1A5a1+ε4,c12=A10A2A4α1+A5a1α1A4ε4.

The displacement components can be rewritten as:

u¯x=n=15Qnknh2n+ibh4neknx,w¯x=n=15Qnibh2nknh4neknx.(44)

The constitutive Eq. 35 can be represented as:

σ¯xx=n=15Qnh2nkn2b2a2A2h3n+a1h1nibknh4na211ξ2kn2b2eknx,σ¯zz=n=15Qnh2na2kn2b2A2h3n+a1h1nibknh4n1a21ξ2kn2b2eknx,σ¯xz=n=15a4Qnibknh2n+ibh4n+kn(ibh2nknh4n1ξ2kn2b2eknx..(45)

4 Boundary conditions

The arbitrary parameters may be assessed when certain boundary constraints are applied to the free non-local microelongated surface. The boundary conditions are selected at [45], and they may be introduced in the following ways:

Mechanical boundary conditions can be selected in the mechanical ramp type at x=0, which can be represented by the normal stress with loaded force Ft on the non-local surface x=0 as [49]:

σ0,t=0t0tt00<tt01t>t0.(46)

The other mechanical condition can be chosen for tangent stress freely at x=0 as:

σxz=0σ¯xz=0.(47)

When the converted temperature gradient has vanished, the thermal state may be considered. In the thermally insulated example, this is stated as [50]:

Θxx=0=0dΘ¯dx=0.(48)

The scalar function’s elongation condition may be written as:

φ¯=0.(49)

The carrier intensity condition of the microelongated non-local semiconducting may be shown following the diffusion transport mechanism. When the concentration of electrons n0 is present and there is a limited range of recombination probabilities, the gradient of the carrier density may be introduced in the manner shown in [51]:

dN¯dx=sn0DE.(50)

Where s is the speed of recombination. Using the values of Θ¯,σ¯xx,σ¯xz,φ¯ and N¯, yields:

n=15Qnh2nkn2b2a2A2h3n+a1h1nibknh4na211ξ2kn2b2=F¯s1est0t0s2,n=15ibQknh2i1+1+k52Λ5=0,n=15knQnb,ω=0,n=15h1nQnb,ω=0,n=15h3nknQnb,ω=sn0DE..(51)

5 Particular cases

1. The theory of rotational microelongation according to the non-local thermoelasticity is derived by considering the change in thermal conductivity while neglecting the impact of the photo-electronics plasma effect (i.e., N=0) [14, 15].

2. The rotational non-local photo-thermoelasticity theory with the variable thermal conductivity is obtained under the effect of the photo-electronics plasma impact when the elongation parameters αo,λo and λ1, are neglected.

3. The models of rotational photo-thermoelasticity with elongation and variation of the thermal conductivity are obtained when the non-local parameter is omitted (i.e., ξ=0).

4. The elongation non-local photo-thermoelasticity theory according to the variable thermal conductivity is observed when the angular velocity is neglected (i.e., Ω=0) [20, 22]:

5. The elongation rotational non-local photo-thermoelasticity model is obtained when the thermal conductivity of the medium is independent of temperature (i.e., π=0 and hence K=K0.

To depict the temperature previous to conversion using a map, it is possible to determine the connection between T and Θ using the maps transform, which is described in Eqs. 6, 7 as:

Θ=1K00TK01+πTdT=T+π2T2=π2T+1π212π,or(55)
T=1π1+2πΘ1=1π1+2πΘ¯eωt+ibz1.(56)

6 Discussion and numerical results

A numerical analysis is carried out with the use of MATLAB (2022a) software to investigate the problem more closely and to explain the effects of relaxation times, rotation, the non-local parameter, and the thermal conductivity on the physical field variables according to the propagated waves. We have selected a polymer silicon (Si, n-type)-like semiconductor medium for numerical calculation. The SI units are selected for the physical constants of the Si media, which are represented as [5254]:

λ=3.64x1010N/m2, μ=5.46×1010N/m2, ρ=2330kg/m3, T0=800K, τ=5x105s, dn=9x1031m3, DE=2.5×103m2/s, Eg=1.11eV, s=2m/s, CE=695J/kgK, αt1=0.04x103K1, αt2=0.017x103K1, K=150Wm1K1, λ0=0.5×1010Nm2, t=0.001, j=0.2×1019m2, γ=0.779×109N, k=1010Nm2, n0=1020m3, λ1=0.5×1010Nm2, α0=0.779×109N,τ0=0.00005,ν0=0.0005.

In the current study, the dimensionless fields are used for numerical calculations to obtain wave propagations of the important physical variables in 2D according to a small value of time. The additional problem constants are used for numerical calculation as: z=1 according to the range 0x5, b=1, the loaded force F¯=1, ζ=0.05 and ω0=2.5 [46, 47].

6.1 Impact of variable thermal conductivity

The effect of various non-positive parameters π on the wave propagation of the main physical field distributions versus the horizontal distance is shown in Figure 2 (consisting of six subfigures) for the range of 0x10. There are three cases examined in this figure. The first condition is when π=0 (K=K0), which stands for the circumstance in which the medium is independent of temperature changes [54]. The second and third scenarios show situations in which the medium is dependent on a temperature change when π=0.3 and π=0.6. Under the influence of the GL model, the thermal, non-local elongation, elastic, plasma, and mechanical waves propagate at a predetermined period when t=0.001 and Ω=0.5. For the thermal condition, the thermal wave begins at positive at the free surface and rises in the initial range towards the edge until reaching its maximum value under the influence of thermal loads brought on by the light beams and mechanical ramp. As a result, the thermal wave gradually and exponentially decrements in the second range until it reaches the least value and aligns with the zero line to achieve stability. We see that the value of the temperature distribution magnitude greatly rises with the increase in parameter. The carrier density with optoelectronic distribution (plasma wave), on the other hand, has the same characteristics as the thermal wave. However, if the parameter π is increased, the amplitude of the dispersion of plasma waves decreases and is consistent with the experimental findings [55]. The second subfigure demonstrates that for three values of the parameter π, the distribution of the microelongation always starts from the zero value at the boundary. As can be observed from the subfigure, the microelongation function reaches its greatest value in the beginning near the non-local surface, at which point the magnitude of the profile starts to decrease as the distance increases. The solution curves of elastic wave (displacement) begin in each of the three situations with a distinct magnitude and converge to zero with an increase in the distance. A drop in numerical values of normal displacement occurs when the value of the π parameter is increased, indicating that it is very sensitive to the variable thermal conductivity parameter. The usual stress variations throughout the distance for all three scenarios (π=0, π=0.3 and π=0.6) are shown in the fifth subfigure. It is seen that the normal stress σxx magnitudes begin at positive values in order to comply with the mechanical ramp-type boundary conditions of the issue, grow to achieve maximum values, then decline and raise again to reach zero values. The magnitudes of the normal stress values are at their highest in all circumstances near the source before progressively approaching zero. Three distinct amounts of variable thermal conductivity (π=0, π=0.3 and π=0.6) are used to illustrate the differences in the tangential stress σxz with the distance x in sixth subfigure. The tangential stress has a predictable zero magnitude starting point, which is satisfied the non-local boundary condition. The subfigure shows that the tangential stress numerically increases for the increasing in the values of variable thermal conductivity [56, 57].

FIGURE 2
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FIGURE 2. The effects of the rotating field in the non-local situation according to various values of variable thermal conductivity, as well as changes of the main physical field’s relative horizontal distance under the GL model.

6.2 Photo-thermoelasticity models

According to the photo-thermoelasticity models (CD,n1=1,no=τo=vo=0, LS,n1=no=1,vo=0,τo>0, and GL,n1=1,no=0,voτo>0), Figure 3 shows the fluctuations of the basic physical quantities with distance in the range 0x10 for three distinct values of the relaxation times. The non-local boundary condition is met under the influence of rotation (Ω=0.5)for elongation-nonlocality properties that follow the same trend of variations when solution curves for the three relaxation time values start at the surface when π=0.6. In this diagram, all solution curves coincide with a line of zero magnitudes while the distances between the three values and the equilibrium state are increasing. It is obvious that the dispersion of the waves under examination is significantly influenced by the relaxation times [58, 59].

FIGURE 3
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FIGURE 3. According to the variations in thermal relaxation times for non-local medium with varying thermal conductivity while π=0.6 under the influence of rotation parameter, the main physical fields’ change with respect to horizontal distance.

6.3 Impact of rotation parameter

The distribution of the basic physical fields in two different scenarios is shown in Figure 4 [presence and absence of rotation field (Ω=0.0 and Ω=0.5)] according to the increase in distance model in the range 0x10. The computational results are made under the effect of the nonlocality parameter according to the GL model when the thermal conductivity depends on the thermal distribution (π=0.6). All wave propagations in the domains under consideration are significantly influenced by the rotation parameter.

FIGURE 4
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FIGURE 4. According to variable thermal conductivity (π=0.6), the main physical fields under the GL model change depending on whether the rotation field has an influence or not for the non-local medium.

6.4 Impact of the nonlocality parameter

To examine the impact of nonlocality in all of the distributions with the medium, Figure 5 has been plotted. At the small time according to the GL theory for rotational medium when π=0.6, we compare local and nonlocal theories throughout the whole area of study. Similar qualitative behavior to that seen in Figure 5 (five subfigures) has been shown. It is clear from this collection of Figure 5 that nonlocality causes all the field variables under study to increase. The elongation function and optoelectronics field are the two exceptions. All distributions are more affected by nonlocality.

FIGURE 5
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FIGURE 5. According to variable thermal conductivity (π=0.6), the main physical fields under the GL model change depending on whether the local has an influence or non-local for the rotating medium.

6.5 The temporal influence

The present analysis pertains to the utilization of a time historical effect in accordance with the GL model for non-local rotating silicon (Si) material. Figure 6 illustrates the temporal variations of temperature, displacement, normal stress, and carrier density within the interval [0, 0.05] at three distinct distance values under the impact of the variable thermal conductivity. Based on the presented plot, it is evident that the distributions being examined exhibit an initial rise in amplitude, followed by a subsequent decline over time, ultimately penetrating further into the semiconductor material.

FIGURE 6
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FIGURE 6. The temporal evolution of wave propagation in non-local rotating Si materials, as described by the GL model with variable thermal conductivity (π=0.6), is investigated over the time span [0, 0.05].

7 Conclusion

The research discussed focuses on investigating the two-dimensional deformation of a homogeneous, isotropic, microelongated semiconducting half-space within the framework of photo-thermoelasticity. The study incorporates variable thermal conductivity in its models and aims to explore the impact of this parameter, as well as thermal relaxation durations and rotation, on various physical fields. The numerical results obtained were approximated and visually represented. The findings suggest that the wave propagation behavior of the physical quantities is primarily influenced by the variable thermal conductivity parameter across a wide range. Using optoelectronics and thermoelastic processes, we are able to acquire and graphically illustrate the wave behavior of the primary fields in semiconductors. The magnitudes of the primary physical fields are observed to increase with different thermal relaxation time choices. Additionally, all waves propagating within the primary fields tend to approach equilibrium. The presence of angular velocity in the microelongated semiconductor medium, along with various relaxation time values, plays a crucial role in the distribution of the physical quantities within a nonlocality medium. Moreover, the rotation parameter is found to have a significant impact on the wave propagation of the studied physical variables. Research into microelongated semiconductor silicon is warranted because of its potential applications in modern electronic devices like cellphones, sensors, computer processors, medical equipment, diodes, accelerometers, inertial sensors, and electric circuits. It is also anticipated that it will be helpful in the design of structures in a wide range of engineering challenges, contemporary physics, mechanical material design, photo-thermal efficiency, and the solar cell. This article’s examination and findings will be invaluable to researchers interested in the applications of semiconductors like diodes, triodes, and other cutting-edge electrical devices.

Data availability statement

The original contributions presented in the study are included in the article/Supplementary Material, further inquiries can be directed to the corresponding author.

Author contributions

AK: Software, Data curation. WA: Writing–original draft. WH: Software, Writing–review and editing. AE-B: Software, Validation. KL: Supervision, Conceptualization, Methodology.

Funding

The author(s) declare financial support was received for the research, authorship, and/or publication of this article.

Acknowledgments

The researchers wish to extend their sincere gratitude to the Deanship of Scientific Research at the Islamic University of Madinah for the support provided to the Post-Publishing Program. The authors extend their appreciation to Princess Nourah bint Abdulrahman University for fund this research under Researchers Supporting Project number (PNURSP2023R229) Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.

Conflict of interest

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Publisher’s note

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.

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Nomenclature

Keywords: semiconductor, photocarrier, micro-elongation, optoelectronic, rotation field, thermal conductivity

Citation: Kamel A, Alhejaili W, Hassan W, El-Bary AA and Lotfy K (2023) A changeable thermal conductivity and optoelectronic-mechanical wave behavior in a microelongated, non-locally rotating semiconductor media. Front. Phys. 11:1287381. doi: 10.3389/fphy.2023.1287381

Received: 01 September 2023; Accepted: 02 October 2023;
Published: 30 October 2023.

Edited by:

Gokhan Zengin, Selcuk University, Türkiye

Reviewed by:

Katarzyna Jakimiuk, Medical University of Bialystok, Poland
Sengul Uysal, Erciyes University, Türkiye

Copyright © 2023 Kamel, Alhejaili, Hassan, El-Bary and Lotfy. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

*Correspondence: Khaled Lotfy, a2hsb3RmXzF5QHlhaG9vLmNvbQ==

Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.