No environmental profit would seem and the power savings realised by digital expertise would merely take up its personal growing footprint. Nanotechnology operates on a good smaller scale than micro-electronics, however its energy requirements are comparable. The manufacture of nanotubes is thus as energy-intensive as the manufacture of microchips . Many of the large-scale applications proposed for nanotubes will simply not be attainable due to energy requirements. Another reason why digital expertise is so energy-intensive to fabricate is the necessity for terribly effective air filters and air circulation techniques . When you build infinitesimal structures like that, a speck of dust would destroy the circuit.