Higher Resolution Nanostructure Printing

The use of block copolymers helps mitigate the limitations of inkjet printing, which can typically only achieve a resolution down to 100 to 200 nanometers. Being able to create nanostructures from soft materials could potentially help create new classes of electronics and sensors.

First, engineers create a topographical or chemical pattern using the electrohydrodynamic printing (e-jet) processes, then place a block copolymer on top of it, which uses the printed template to form patterns at a higher resolution.

“This invention, to use inkjet printing to deposit different block copolymer films with high spatial resolution over the substrate, is highly enabling in terms of device design and manufacturing in that you can realize different dimension structures all in one layer,” said Paul Nealey,  the Brady W. Dougan Professor in Molecular Engineering at University of Chicago. “Moreover, the different dimension patterns may actually be directed to assemble with either the same or different templates in different regions.”

The research was published in the September issue of Nature Nanotechnology.

Source: AZoNano