From PhysOrg:
3D-printer with nano-precision
A 285 µm racecar, printed at the Vienna University of Technolog
Printing three dimensional objects with incredibly fine
details is now possible using "two-photon lithography". With this
technology, tiny structures on a nanometer scale can be fabricated.
Researchers at the Vienna University of Technology (TU Vienna) have now
made a major breakthrough in speeding up this printing technique: The
high-precision-3D-printer at TU Vienna is orders of magnitude faster
than similar devices (see video). This opens up completely new areas of
application, such as in medicine....
...This amazing progress was made possible by combining several new ideas.
“It was crucial to improve the control mechanism of the mirrors”, says
Jan Torgersen (TU Vienna). The mirrors are continuously in motion during
the printing process. The acceleration and deceleration-periods have to
be tuned very precisely to achieve high-resolution results at a
record-breaking speed.
A model of St. Stephen's Cathedral, Vienna. Credit: Klaus Cicha
