How do you increase the refractive index of a polymer?

How do you increase the refractive index of a polymer?

By removing the analyzer in a crossed polarizing microscope, the single permitted direction of light vibration passing through the polarizer interacts with only 1 electrical component in the birefringent crystal. The technique allows segregation of a single refractive index for measurement. Subsequently, the rest of the refractive index of a birefringent material may then be…