Thin Film

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'Thin Film' used to create bubble (Thickness: 270, IOR: 1.4)


Thin Film reproduces the effect of thin film interference on a surface.

More Information about soap bubble color and film thickness can be found here.

 

 

Thickness

Defines the actual thickness of the film between the specified min and max thickness (0 to 2000 (soft min/max)). Normally this would be something like a noise map to give some variation to the interference effect.  

IOR

The refractive index of the medium surrounding the material. Normally this is set to 1.0 for air.  

The IOR for a soap bubble should be in the 1.3-1.4 range.

 

 

How Thin Film is Modeled

 

How to Map IOR values from Thin Film to Standard Surface

 

 

Further example of Thin Film used to represent the reflective coating on a beetle

 

 

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