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Topology Optimisation

This guide will cover rfx’s topology optimisation pipeline:

  • Density parameterisation — continuous relaxation of material presence
  • Cone filter — minimum feature-size enforcement via spatial filtering
  • Smooth Heaviside projection — binarisation with differentiable thresholding
  • Beta continuation schedule — progressive sharpening toward 0/1 designs
  • Gradient computationjax.grad through the full FDTD loop

See Gradient Behavior for where gradients are reliable and Inverse Design for the broader design framework.