Printing three dimensional objects with very fine details using two-photon lithography can now be achieved orders of magnitude faster than similar devices in a breakthrough by Vienna University of Technology (TU Vienna) researchers.
The 3D printing process uses a liquid resin, which is hardened at precisely the correct spots by a focused laser beam. The focal point of the laser beam is guided through the resin by movable mirrors and leaves behind a hardened line of solid polymer a few hundred nanometers wide.
This fine resolution enables the creation of intricately structured sculptures as tiny as a grain of sand.
Articol: http://www.kurzweilai.net/fast-3d-printing-with-nanoscale-precision
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