March 16, 2012
-- The ability to generate tiny three-dimensional objects using a special printer just got a whole lot faster.
Machines, known as two-photon lithography printers, can produce detailed structures as small as a grain of sand.
Vienna University of Technology researchers Jan Torgersen and Peter Gruber, led by materials science and technology professor Jürgen Stampfl, took the printing process from millimeters per second to five meters per second, a world record.
This 3-D printed version of St. Stephan's Cathedral in Vienna is about 50 micrometers wide on its largest side, smaller than the diameter of the average human hair.
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