1. A method comprising: disposing an ink mixture comprising at least two different patterning compounds, including a first patterning compound and a second patterning compound, (i) on a tip disposed on a cantilever or (ii) on a stamp, contacting the tip or the stamp with a surface, wherein transport of the first and second patterning compounds occurs from the tip or the stamp to the surface to produce on the surface a phase separated structure comprising the first and second patterning compounds.