Tiny replicas of Michelangelo's David created by scientists using advanced 3D printing technique

The smallest of the statues measures less than one millimeter in height.

The technique allows the team to deposit dissolved metals onto a a substrate with a high degree of precision, building up minuscule structures, layer by layer.

"The process allows us to print structures or geometries of all levels of complexity," Giorgio Ercolano, one of the authors of the study, said in a statement."I could even have printed the room that the statue is standing in—the data includes that as well!" The smaller statue is less detailed than the larger one but took much less time to create. In total, it took 20 minutes to print the small David and 30 hours to create the larger one.Giorgio Ercolano, Exaddon

"We're thrilled that a technology from our research lab has made its way into practical application," Tomaso Zambelli from ETH's Laboratory of Biosensors and Bioelectronics said in the statement."An independent group was able to adopt our 3D printing technology and even improve upon it—which shows that it really works."

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