As I understand now for declaring every new dispersive material to be used in the same simulation I have to use structure::add_polarizability with a different sigma function every time. For example if I want to use 2 different dispersives in two different places I have to do it two times with two different sigmas. Is it right ?
It makes it pretty difficult to use if you want to create a general program which supports user in declaring many dispersive materials in many places inside the crystal which would be defined in a batch file. And it is exactly what I am doing right now. First of all every usage of the sigma function just like the eps function takes a lot of time for large volumes. It makes the initialization time unnecessarily long. The second thing is that I have to come up now with some soft of array of pointers to the sigma functions for passing to add_polarizability for each dispersive material so that the system is general and logical. But It just gets more complicated that way. My question is after all : Is there no way to introduce many dispersive regions with just one function call ? Like if there could be a function sigma_multi wich returns for example 1 for the first dispersive material, 2 for the second one, 3 for the third one and so on ? After all the dispersive material can not overlap, can they ? Thomas Jefferson 2008/8/6 Steven G. Johnson <[EMAIL PROTECTED]>: > On Aug 5, 2008, at 4:30 AM, Jefferson Thomas wrote: >> Thank you for your answer matt. I dont understand however how the >> structure::add_polarizability function works. >> I mean, it sets the polarizabiliy everywhere in the calculation volume >> or just in some specifc region ? >> Is the sigma function responsible for it ? >> Lets say I want to have entire space filled with some normal material >> and then just a circle inside >> with a dispersive one. Can I do it with the add_polarizability >> function ? > > Yes, you do it with the sigma function. Just make sigma = 0 outside > your circle. > > > _______________________________________________ > 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
