2.11.5. growth_direction

Calling sequence

strain{ growth_direction }

Properties

• usage: \(\mathrm{\textcolor{Dandelion}{conditional}}\)

• type: vector of 3 integers: \((z_1, z_2, z_3)\)

• values: no constraints

• default: \(r_1=1.0\), \(r_2=0.0\), \(r_3=0.0\)

• unit: \(\mathrm{-}\)

Dependencies

• This keyword is not allowed if simulate1D{ } is defined.

Functionality

Defines a normal vector to a substrate surface, corresponding to the growth direction, for a pseudomorphic strain model. It is defined in crystal coordinate system. It can be specified in a 2D and 3D simulations, but not in a 1D simulation as the crystal direction along the x-axis is always chosen in this case.

Example

strain{
    growth_direction = [1, 1, 0]
    pseudomorphic_strain{}
}

global{
    simulate2D{}
    ...
}