Dear lammps users,
I am thinking about getting the shear modulus for very thin film ( 2 nm ), self assembled monolayer on si substrate, which is infinite in x and y direction. It is easy to get the shear modulus in xy direction by tilting the simulation box, What if I would like to get the shear modulus in xz direction? Can I also tilt the simulation box in xz? But the problem is that z direction is unperiodic.