Controllable Self Assembly of Colloidal Crystal Arrays on SU-8 Photoresist Micropatterns

摘要

In this paper, we report on the effect of micropatterned SU-8 photoresist surfaces to self assembly of ordered colloidal crystal arrays. SU-8 microstructures are photopatterned onto glass substrates with minimal feature resolution of 1.5 μm using ultraviolet (UV) exposure. By simply controlling the colloidal concentration of the self assembly solution and the dimensions of the micropatterns, ordered colloidal crystal arrays are formed inside the SU-8 micropatterns. The method may have potential applications in photonic crystal device and chip fabrications.