Pixellated Photonic Crystal Films by Selective Photopolymerization


  • This work was supported by a grant from the Creative Research Initiative Program of the Ministry of Science and Technology for “Complementary Hybridization of Optical and Fluidic Devices for Integrated Optofluidic Systems”. We also appreciate the partial financial support from the Brain Korea 21 Program. Supporting Information is available online from Wiley InterScience or from the author.


original image

Mosaic patterns of blue, green, and orange colors (see figure) are obtained using a multistep photolithography process. Inverse opal films have been pixellated by this process using colloidal crystals as templates, resulting in multicolor patterns. The degree of photopolymerization is controlled by adjusting the UV exposure time and, thus, the refractive color of the inverse opal can be modulated.