I think you should probably change your scale. i.e. Make the sphere radius equal to 1 in meep units, and define that (for yourself) as ten nanometers. Then you just need to scale the frequency of your source equivalently.
Goodluck! On Fri, Oct 15, 2010 at 10:58 AM, hogen john <hogen.j...@hotmail.com> wrote: > Dear MEEP users, > I have modeled a dispersive material and now trying to simulate a > sphere. I am having a problem with the size of sphere. My sphere radius is > 0.01 (in meep units), which is equivalent to 10nm. The source size is 0.5 x > 0.5 x 0. See the code given below. The problem is that when i run the > simulation, i obtained a very small sphere, which seems like a point. I > don't want to change the radius of the sphere because i saw on the meep > group that the sphere radius should be much smaller than the size of source > and also one big reason is that when i increased the radius of a sphere then > i got higher modes. I am only interested in lower modes like monopole, > diapole and quadrapole etc. I even increased the resolution up to 150 but > still facing the same problem. I am using "h5topng -S3 -t1:6000 -y15 -Zc > dkbluered sphere-y-efield.h5" for output. Does anybody know where the > problem is? or Give me some suggestions to solve this problem. > > (set! geometry-lattice (make lattice (size 0.5 0.5 1))) > (set! geometry > (list > (make sphere (center 0 0 0) (radius 0.01) > (material (make dielectric (epsilon 1) > . . . . . > )) > (set! resolution 150) > (set! sources (list > (make source > (src(make gaussian-src (wavelength 0.6) (width > 0.6))) > (component Ey) > (center 0 0 -0.3) > (size 0.5 0.5 0) > ) > ) > ) . . . . . > > Best Regards, > Hogen > > > > _______________________________________________ > meep-discuss mailing list > meep-discuss@ab-initio.mit.edu > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss >
_______________________________________________ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
