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September 10th, 2007
Hands-on nanotechnology: towards a nanorobotic assembly line
Until the twentieth century, a single craftsman or team of craftsmen would normally create each part of an industrial product individually and assemble them together into a single item, making changes in the parts so that they would fit together and work together; the so-called English System of manufacture. Then Henry Ford came along and in 1907-08 developed the assembly line for his Model T automobile. This innovation revolutionized not only industry but also our society because it allowed mass production of industrial goods at much lower cost than before. At its core, an assembly line is a manufacturing process in which interchangeable parts are added to a product in a sequential manner to create a finished product. Nanotechnology techniques today are pretty much where the industrial world was before Ford's assembly line - a domain of craftsmen and not of mass production. It has long been a dream for nanotechnologists that robots could one day be used in a similar way to produce nanodevices. A group of researchers from Denmark and Germany have now developed the rudimentary beginnings of the nanotechnology equivalent of an assembly line. They have shown 'pick-and-place' assembly of a working device using a silicon gripper - a robotic 'hand' some 10000 times smaller than a human hand. This nanogripper, controlled by a nanorobotic arm, is capable of picking up a carbon nanofiber (CN) and fix it onto the tip of an atomic force microscope cantilever.
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