Research interests include soft condensed matter and complex fluids, e.g., polymers, colloids, liquid crystals, and his current research is focused on developing new fabrication techniques for photonic crystals including colloidal self-assembly and multi-beam interference lithography. He was also involved in plastic transistors on flexible substrates for various applications, including electronic paper. Prof. Wiltzius is not taking on new graduate students, undergrads or postdocs at this time.