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

Scientists from the Lausanne Federal Polytechnic School (EPFL) have developed a method that allows you to print 3D objects in record time. You can read more about this on the website of the research center.

The new technique, which was shown by researchers from the Lausanne Federal Polytechnic School (EPFL), helps print even large objects in a few 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.

The new technique allows you to print objects by processing the 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.

“So far, the system is capable of creating two-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 and biology. 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.

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