Nanotechnology Simple Piston
In this close-up of a model depicting a nanotechnology simple piston, thousands of times thinner than a hair, a “buckyball” of carbon atoms interrupts the flow of helium atoms in a graphite nanotube. Such atomic-scale machines will be able to move and sort substances molecule by molecule. The images show a variety of fluid flow features that are not readily apparent from raw computer data. The image was provided by Oak Ridge National Laboratory researchers Don W. Noid, Bobby G. Sumpter and Robert Tuzun.