Swiss scientists learn how to print 3D objects in a few seconds

New technique shown by researchers fromThe Lausanne Federal Polytechnic School (EPFL) helps print even large objects in seconds. If a conventional model slices hundreds of horizontal 2D layers and slowly builds them layer by layer, then in this case the process occurs immediately and a thousand times faster than before.

New technology allows you to print objects byprocessing photosensitive resin with a laser. Scientists used a tomographic technique that is commonly used in radiography and ultrasound. Laser light is modulated by a DLP chip, it covers the entire assembly volume, and the resin container rotates and is exposed to light. The laser projects the model at different angles of rotation, which synchronizes with the rotating resin, and in a matter of seconds can produce the entire model.

“While the system is capable of creatingtwo-centimeter structures with an accuracy of 80 micrometers - the same size as a strand of hair. " However, now a team of researchers is developing new devices, they will print much larger objects, up to 15 cm.

The new method can be used in medicine andbiology. It allows you to create soft objects such as tissues, organs or hearing aids. Scientists have already managed to print using artery technology and test them together with the surgeon. “The test results were extremely encouraging,” one of the authors of the project shared.