Nanomaterials describe, in principle, materials of which a single unit is sized (in at least one dimension) between 1 to 1000 nanometres (10−9 meter) but usually is 1 to 100 nm (the usual definition of nanoscale).
Keeping large jets in flight while traversing thousands of miles at high speed consumes quite a bit of fuel. Novel technology to reduce drag while reducing weight promises a significant reduction in fuel usage and associated costs and emissions.