Synthesis of Rough Colloidal SU-8 Rods and Bananas via Nanoprecipitation

Surface roughness plays an important role in determining the mechanical properties, wettability, and self-assembly colloidal systems. In this work, we develop a simple fast method to produce rough SU-8 rods, bananas, spheres, via nanoprecipitation of water. During process, nanospheres are absorbed onto surface particles then cross-linked using UV-light. The size spherical asperities asperity density controlled by concentration used during reaction. Fluorescent labeling allows for their confocal imaging, which demonstrates stability at high packing fractions. With these newly developed particles, provide model system that studies addressing impact on materials composed anisotropic particles.