3D printing with nano-precision

Researchers in Austria have set a new world speed record for the fastest 3D-printed nano-objects. The team from the Vienna University of Technology has been able to create sculptures as small as a grain of sand in a fraction of the time than had previously been required.To demonstrate the process the group created a model of a Formula 1 racing car 0.285mm (0.011in) in length in just over four minutes.The technique could be used to make small biomedical parts.

A handout electron microscope photograph shows a human figure created by a newly developed 3D printing technique for nano structures, made available to Reuters March 29, 2012. Researchers from the Vienna University of Technology have set a new world speed record for creating 3D nano objects. The University team create their grain of sand-size structures in just four minutes, a fraction of the time that other items have previously been printed. Previously making complex large 3D structures would take hours or even days but with the newly developed 3D laser printer the scientists can speed that up by a factor of 500 or in some cases 1,000 times. The process called “two-photon lithography” involves using a focused laser beam to harden liquid resin in order to create micro objects of solid polymer. The scientists said the technique could be developed to make small biomedical parts to be used by doctors. B/W ONLY REUTERS/Vienna University of Technology/Handout 

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