Photofabrication of Superhelix-Like Patterns on Azobenzene Polymer Films


  • This work was supported by the BK21 project and the KOSEF (R01–2001–00324).


Unusual superhelix-like patterns on the surface of azopolymer films (see Figure) have been directly photofabricated by exposure to a laser interference pattern. Each superhelix-like pattern is aligned parallel to the others, with a diameter of micrometer scale that could be controlled by the laser interference periodicity.