Dear POV-ray users,

I am very new at raytracing and would greatly appreciate some help improving my
first effort. I am working on a POV ray model of an etched silicon wafer. I have
attached an image with a microscopy image of the "real" etched silicon wafer
(the pyramid pits are the etched areas) on the left and my POV ray model on the
right. The POV ray model is built from a mesh which was constructed from the
point cloud export from our etch simulation software.

Anyway, below is the POV ray code I am currently using (I didn't include the
mesh, it is really big - I can send it to you if you ask). I would like to make
the POV ray image look more 3D, more specifically I would like the pyramids to
look like they go into the surface whereas now most people think they come out
of the surface. The microscopy image does a good job of this.

I have explored different light positions (and multiple ones)) and lots of
different finish attributes but nothing is really working very well. Your help
is most appreciated.

Regards,
Kevin

### POV ray code begin ###

global_settings {
    ambient_light rgb <1,1,1>
    assumed_gamma 1.0
    max_trace_level 10
}

background { color White }

#declare Tex_Silicon =
texture {
   pigment {color rgb <0.16, 0.18, 0.25>}
   normal {bumps 0.001}
   finish {
   ambient 0.2
   brilliance 0.9
   diffuse 0.6
   //specular 0.3
   roughness 0.001
   }
}

#declare Material_0=material{
texture {Tex_Silicon }
 }

camera {
   location <-5.00000, 55, 0.000000>
   look_at <0.000000, 0.000000, 0.000000>
   right x*image_width/image_height
}

light_source {
    <-200,250,0> //<+up and -down, height, -right and +left>
    color White
    area_light <20, 0, 0>, <0, 0, 20>, 15, 15
    adaptive 1
    jitter
    }

object{Object_0 material{Material_0}}

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Attachments:
Download 'fig1_sem-pov_comparison.png' (236 KB)

Preview of image 'fig1_sem-pov_comparison.png'