3D printer prints sand grain size models
It’s for sure some achievement. Researchers from the Vienna University of Technology have set a new world record of being the fastest to create 3D nano objects. Four minutes is all it took for the team to create a 3D nano object, which is just a fraction of time that is required to create other 3D objects. To do this, the Vienna University of Technology researchers deployed a 3D laser printer that speeds up the printing process by a factor of 500 or in some cases even 1,000. The technique used by the 3D laser printer is ‘two-photon lithography’ that 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.
If you are interested in knowing the exact micro-scales, so to speak, of the objects printed by the 3D laser printer deployed by the Vienna University of Technology researchers then here are certain insights into the same. The racecar in picture is 285 nanometers long. To be precise, it is about 1/1000 the width of a human hair. Yeah, you can say that apart from being fast, this car is rather small.
Here’s how the 3D laser printer works? It prints the layers of liquid resin that hardens when it's hit with two photons from the laser beam. The moving mirrors make sure that the beam is directed to a right place as the printer operates. The output that is yielded has a resolution of hundreds of nanometers. As a result, each of the sculptures that are yielded by this printer is of a grain of sand. Other sculptures, printed out by this astounding 3D printer are the Tower Bridge of London and St. Stephan’s Cathedral.
Image by sethoscope