Isotropic “Islands” in a Cholesteric “Sea”: Patterned Thermal Expansion for Responsive Surface Topologies


  • The authors thank T. Bel, G. N. Mol, and P. Teunissen; National Science Foundation DMR-0506072 and DMR-0079964.


original image

A method to capture ordered and disordered regions in reactive mesogen films to take advantage of the anisotropic thermal properties and fabricate a thermally responsive patterned film is presented. The image shows white-light interferometer images of isotropic cylinders in cholesteric material. The underlying principle phenomenon observed here is well described by a finite-element simulation.