Young Soo Joung, Cullen R. Buie, US Patent: US9096942
A method of altering a property of a surface Includes suspending a plurality of low surface, energy particles in a solvent, agglomerating the suspension of particles, and subjecting the suspension of particle agglomerates to electrophoretic deposition onto a substrate for a predetermined time. The altered surface may be superhydrophilic or superhydrophobic.
http://patentscope.wipo.int/search/en/WO2012116034