Nanotube Membrane (Paperback)

High Quality Content by WIKIPEDIA articles! Nanotube membrane is either a single, open-ended nanotube or a film composed of open-ended nanotubes that are oriented perpendicularly to the surface of an impermeable film matrix like the cells of a honeycomb. 'Impermeable' is essential here to distinguish nanotube membrane with traditional, well known porous membranes. Fluids and gas molecules may pass through the membrane en masse. Transport of polystyrene particles (60 and 100 nm diameter) through single-tube membranes (150 nm) was reported back in 2000. Soon after, ensemble membranes consisting of multi-wall carbon nanotubes, were fabricated and studied. It was shown that water can pass through the graphitic nanotube cores of the membrane at speeds several magnitudes greater than classical fluid dynamics would predict, both for multiwall tubes (inner diameter 7 nm) and double-wall tubes (inner diameter