Well, I thought that there was a way to simulate what happens when microwaves are incident on a nanoslit. It is routinely done with the Finite Element Method - I assumed FDTD would do it too.
> So, you are specifying a computational cell of 0.66e8 x 1.98e8 pixels; > it's not surprising that there is an error! >From previous emails and information in the archives, I thought this was required: a large enough computational cell (at least a wavelength in size), a large enough computational volume for the source to propagate before it hits the target (hence the long rectangular shape) and a high enough resolution to make out the tiny features. Ashifi. Steven G. Johnson wrote: > On Tue, 14 Nov 2006, Ashifi wrote: >> All the files in the examples directory run fine, except bend-flux.ctl. >> It complains about an error in opening an HDF5 file. > > That's because you have to run its normalization case first, as > explained in the tutorial. > >> The file attached gave me the error I reported earlier (meep: Cannot >> split -638795776 grid points into 1 parts). The pastebin link may have > > I added a statement to print out your cell size: > > (print "cell size = " size-cell-pml " x " (* 3 size-cell-pml) > ", resolution = " resolution "\n") > > The output is: > > cell size = 0.66 x 1.98, resolution = 1.0e8 > > So, you are specifying a computational cell of 0.66e8 x 1.98e8 pixels; > it's not surprising that there is an error! > > Think about what you are doing: you want a computational cell size that > is about a meter squared, but you want a resolution of less than a > micron. There is no way you are going to be able to simulate this on any > computer > with a finite-difference method. Meep won't perform miracles for you. > > Steven > > _______________________________________________ > meep-discuss mailing list > [email protected] > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss > _______________________________________________ meep-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
