I am studying the scattering cross section of Ge nano particles.
when i first simulated the scattering cross section as described in Mie 3D exampe on lumerican webpage i got this result.
However, i would like to change the index of the background so i used a cube extended through the PML region where i get negative Qscat which i think is not true.
in order to check that whether the simulation set up is correct or not i used a cube of index one to resemble the air’s back ground and i still get negative Qscat.
I am wondering is there something wrong in the simulation setup?Ge-250 - idex 1.2.fsp (324.7 KB)