I want to create a line defect 1-D PhC waveguide. I want a single defect only in the centre. But whenever I run the code, I'm getting a defect in the centre of each block. And if I append the block of same size(0.3) of eps 4.41, I get a blank image.
(define-param x-dim 1) (define-param y-dim 20) (define-param z-dim 4) (set! geometry-lattice (make lattice(size 1 1 no-size))) (set! default-material (make dielectric (epsilon 4.41))) (set! geometry(list(make block (material (make dielectric (epsilon 1))) (center 0 0 0) (size 0.3 1 infinity)))) (set! geometry (append geometry (list (make block (material (make dielectric (epsilon 4.41))) (center 0 0 0) (size 0.1 1 infinity))))) (set! resolution 16) (set! k-points (list (vector3 0.5 0.5 0))) (set! num-bands 50) (run) Please help me with the necessary changes. _______________________________________________ mpb-discuss mailing list mpb-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss