nanolithography

Optical-grade silk fibroin aqueous solution, obtained from the cocoons of the Bombyx mori caterpillar, was placed on a substrate and spin-coated to form a silk film. Both positive and negative resists were formed and developed using water.
Fabricating Nanostructures with Silk Could Make Clean Rooms Green Rooms
Desktop Printing at the Nano Level
UMD Creates New Tech for Complex Micro Structures for Use in Sensors & Other Apps
Localized heating could be the key to mass-producing graphene nanocircuits