Researchers at Vienna University of Technology have set a new world speed record for creating 3D nano-objects. The University team creates 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. – Photo and text by Reuters

Dissertation student Jan Torgersen of Vienna University of Technology operates a newly developed 3D laser printer, in Vienna March 29, 2012. ? Reuters Photo

A handout electron microscope photograph shows a nano-scale F1 racing car model created by a newly developed 3D printing technique for nano structures, made available to Reuters. ? Reuters Photo

A handout electron microscope photograph shows a human figure created by a newly developed 3D printing technique for nano structures, made available to Reuters. ? Reuters Photo

A handout electron microscope photograph shows a nano-scale model of London's Tower-Bridge created by a newly developed 3D printing technique for nano structures, made available to Reuters. ? Reuters Photo

A handout electron microscope photograph shows a nano-scale F1 racing car model created by a newly developed 3D printing technique for nano structures, made available to Reuters March 29, 2012. ? Reuters Photo

A handout electron microscope photograph shows a nano-scale model of London's Tower-Bridge created by a newly developed 3D printing technique for nano structures, made available to Reuters. ? Reuters Photo

Dissertation student Jan Torgersen of Vienna University of Technology tries to make a laser beam visible on a newly developed 3D laser printer, in Vienna. ? Reuters Photo

Dissertation student Jan Torgersen of Vienna University of Technology wears safety goggles in front of a newly developed 3D laser printer, in Vienna. ? Reuters Photo

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