Envelope-function matching conditions for GaAs/(Al,Ga)As heterojunctions

1988 ◽  
Vol 38 (14) ◽  
pp. 10057-10059 ◽  
Author(s):  
Ian Galbraith ◽  
Geoffrey Duggan
Keyword(s):  
Envelope Function ◽  
Matching Conditions

The optimal vector phase matching conditions in crystalline materials determined by extreme surfaces method: Example of uniaxial nonlinear crystals

2021 ◽  
Vol 120 ◽  
pp. 111420
Author(s):  
Nazariy Andrushchak ◽  
Oleh Buryy ◽  
Andriy Danylov ◽  
Anatoliy Andrushchak ◽  
Bouchta Sahraoui
Keyword(s):  
Phase Matching ◽  
Matching Conditions ◽  
Crystalline Materials ◽  
Nonlinear Crystals ◽  
Optimal Vector

scholarly journals NONUNIFORM BRANEWORLD STARS: AN EXACT SOLUTION

2009 ◽  
Vol 18 (05) ◽  
pp. 837-852 ◽  
Author(s):  
J. OVALLE
Keyword(s):  
Exact Solution ◽  
Effective Density ◽  
Interior Solution ◽  
Effective Pressure ◽  
Gravity Effect ◽  
Field Equations ◽  
Matching Conditions ◽  
Physical Behavior ◽  
Exterior Solution ◽  
Weyl Scalar

In this paper the first exact interior solution to Einstein's field equations for a static and nonuniform braneworld star with local and nonlocal bulk terms is presented. It is shown that the bulk Weyl scalar [Formula: see text] is always negative inside the stellar distribution, and in consequence it reduces both the effective density and the effective pressure. It is found that the anisotropy generated by bulk gravity effect has an acceptable physical behavior inside the distribution. Using a Reissner–Nördstrom-like exterior solution, the effects of bulk gravity on pressure and density are found through matching conditions.

scholarly journals Self-consistent procedure including envelope function normalization for full-zone Schrödinger-Poisson problems with transmitting boundary conditions

2018 ◽  
Vol 124 (20) ◽  
pp. 204501 ◽  
Author(s):  
Devin Verreck ◽  
Anne S. Verhulst ◽  
Maarten L. Van de Put ◽  
Bart Sorée ◽  
Wim Magnus ◽  
...  
Keyword(s):  
Boundary Conditions ◽  
Envelope Function ◽  
Self Consistent ◽  
Transmitting Boundary

An Accurate Spatial Discretization and Substructural Method With Application to Moving Elevator Cable-Car Systems: Part I—Methodology

2011 ◽  
Author(s):  
H. Ren ◽  
W. D. Zhu
Keyword(s):  
Differential Algebraic Equations ◽  
Distributed Parameter ◽  
Algebraic Equations ◽  
Spatial Discretization ◽  
Matching Conditions ◽  
Generalized Coordinates ◽  
Axial Forces ◽  
Linear Algebraic Equations ◽  
Dependent Variables ◽  
Elevator Cable

A spatial discretization and substructure method is developed to calculate the dynamic responses of one-dimensional systems, which consist of length-variant distributed-parameter components such as strings, rods, and beams, and lumped-parameter components such as point masses and rigid bodies. The dependent variable, such as the displacement, of a distributed-parameter component is decomposed into boundary-induced terms and internal terms. The boundary-induced terms are interpolated from the boundary motions, and the internal terms are approximated by an expansion of trial functions that satisfy the corresponding homogeneous boundary conditions. All the matching conditions at the interfaces of the components are satisfied, and the expansions of the dependent variables of the distributed-parameter components absolutely and uniformly converge. The spatial derivatives of the dependent variables, which are related to the internal forces/moments, such as the axial forces, bending moments, and shear forces, can be accurately calculated. Assembling the component equations and the geometric matching conditions that arise from the continuity relations leads to a system of differential algebraic equations (DAEs). When some matching conditions are linear algebraic equations, some generalized coordinates can be represented by others so that the number of the generalized coordinates can be reduced. The methodology is applied to moving elevator cable-car systems in Part II of this work.

Matching conditions of single layer absorber with sendust flaky-filler composite

2015 ◽  
Vol 393 ◽  
pp. 347-351 ◽  
Author(s):  
Liang Qiao ◽  
Xiling Li ◽  
Tao Wang ◽  
Liyun Tang ◽  
Fashen Li
Keyword(s):  
Single Layer ◽  
Matching Conditions
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