(no subject)

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I want to create a line defect 1-D PhC waveguide. Below is my ctl file and
the image of epsilon file. I have a default material of 4.41 dielecric
constant and i have inserted blocks of air. To temove a single block, I
have inserted a block of dielectric in the centre of slightly less radius.
I want a single block of dielectric only in the centre which is of same
radius as all other blocks. But whenever the run the code, I'm getting a
dielectric in the centre of each block. Please help me find where am I
going wrong?

(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

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<div dir=3D"ltr"><span style=3D"font-size:12.8px">I want to create a line d=
efect 1-D PhC waveguide. Below is my ctl file and the image of epsilon file=
. I have a default material of 4.41 dielecric constant and i have inserted =
blocks of air. To temove a single block, I have inserted a block of dielect=
ric in the centre of slightly less radius. I want a single block of dielect=
ric only in the centre which is of same radius as all other blocks. But whe=
never the run the code, I&#39;m getting a dielectric in the centre of each =
block. Please help me find where am I going wrong?</span><br style=3D"font-=
size:12.8px"><br style=3D"font-size:12.8px"><span style=3D"font-size:12.8px=
">(define-param x-dim 1)</span><br style=3D"font-size:12.8px"><span style=
=3D"font-size:12.8px">(define-param y-dim 20)</span><br style=3D"font-size:=
12.8px"><span style=3D"font-size:12.8px">(define-param z-dim 4)</span><br s=
tyle=3D"font-size:12.8px"><br style=3D"font-size:12.8px"><span style=3D"fon=
t-size:12.8px">(set! geometry-lattice (make lattice(size 1 1 no-size)))</sp=
an><br style=3D"font-size:12.8px"><span style=3D"font-size:12.8px">=C2=A0(s=
et! default-material (make dielectric (epsilon 4.41)))=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0</span><br style=3D"font-size:12.=
8px"><span style=3D"font-size:12.8px">(set! geometry(list(make block (mater=
ial (make dielectric (epsilon 1)))</span><br style=3D"font-size:12.8px"><sp=
an style=3D"font-size:12.8px">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 (center 0 0 0) (size 0.3 1 infinity))))</=
span><br style=3D"font-size:12.8px"><span style=3D"font-size:12.8px">(set! =
geometry (append geometry</span><br style=3D"font-size:12.8px"><span style=
=3D"font-size:12.8px">(list (make block (material (make dielectric (epsilon=
 4.41)))</span><br style=3D"font-size:12.8px"><span style=3D"font-size:12.8=
px">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 (center 0 0 0) (size 0.1 1 infinity)))))</span><br style=3D"font-=
size:12.8px"><span style=3D"font-size:12.8px">=C2=A0</span><br style=3D"fon=
t-size:12.8px"><span style=3D"font-size:12.8px">(set! resolution 16)</span>=
<br style=3D"font-size:12.8px"><span style=3D"font-size:12.8px">(set! k-poi=
nts (list (vector3 0.5 0.5 0)))</span><br style=3D"font-size:12.8px"><span =
style=3D"font-size:12.8px">(set! num-bands 50)</span><br style=3D"font-size=
:12.8px"><br style=3D"font-size:12.8px"><br style=3D"font-size:12.8px"><spa=
n style=3D"font-size:12.8px">(run)</span><br><div><span style=3D"font-size:=
12.8px"><br></span></div><div><span style=3D"font-size:12.8px">Please help<=
/span></div></div>

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