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Ansys Learning Forum › Forums › Discuss Simulation › Photonics › Simulation of absorptivity of polymers › Reply To: Simulation of absorptivity of polymers

August 13, 2024 at 7:27 pm
Guilin Sun
Ansys Employee

From what you said, I would suggest you to use stackrt stackrt - Script command as there is no nano structure.

For the high reflectivity, it should be from the cavity effect. thus the thickness is important. Two transparent materials such as PTFE on SIO2 can have very low transmission or reflection, depending on their thickness.

FDTD solves directly the Maxwell's Equations. As long the physics can be described by the Equations you should be able to simulate it with FDTD, provided that you have powerful computer and correct materials/geometry.  In your case using stackrt should give you correct result.