Hello,
I'm trying to obtain the dispersion relation of a graphene waveguide which I previously analyzed via Matlab and on paper.
In order to do this I set up a parametric sweep on frequency (angular pulse, in fact) and with Mode Analysis module I get what I need. I selected as Transform the option "Out of plane wavenumber", which is imported from a Matlab script to set up the parameter "Search for modes around".
The problem is that I cannot include the Interpolation function that I created as from Matlab files because of the error:
"COMSOL error: unknow function name. Property: shift (search for modes around)"
and by fixing it as parameter or embedding a numerical value makes the solver unable to evaluate the desired mode over a wide range of frequencies, while for small ranges the result is acceptable.
Any ideas on how fix the problem or better ways to procede?
I'm trying to obtain the dispersion relation of a graphene waveguide which I previously analyzed via Matlab and on paper.
In order to do this I set up a parametric sweep on frequency (angular pulse, in fact) and with Mode Analysis module I get what I need. I selected as Transform the option "Out of plane wavenumber", which is imported from a Matlab script to set up the parameter "Search for modes around".
The problem is that I cannot include the Interpolation function that I created as from Matlab files because of the error:
"COMSOL error: unknow function name. Property: shift (search for modes around)"
and by fixing it as parameter or embedding a numerical value makes the solver unable to evaluate the desired mode over a wide range of frequencies, while for small ranges the result is acceptable.
Any ideas on how fix the problem or better ways to procede?