Based on the rapid evaporation of solvent from simple “inks,” University of Illinois researchers have demonstrated a process for fabrication of complex, three-dimensional nanoscale structures and shown the ability to grow individual nanowires of unlimited length.
The process has been used to fabricate freestanding nanofibers, stacked arrays of nanofibers and continuously wound spools of nanowires. Potential applications include electronic interconnects, biocompatible scaffolds and nanofluidic networks.
“The process is like drawing with a fountain pen – the ink comes out and quickly dries or ‘solidifies,’ ” said Min-Feng Yu, a professor of mechanical science and engineering, and an affiliate of the Beckman Institute. “But, unlike drawing with a fountain pen, we can draw objects in three dimensions.”