In Harvard developed a pen that prints complex metal objects

3D Pen
Researchers at Harvard University have developed a unique pen with the functions of a 3D printer. Looking at her work, there is a feeling that the elegant metallic objects created by her arise literally from the air.

This is due to the special “ink” consisting of silver nanoparticles, which at the time of their appearance from the “pen” are sintered by means of a laser, forming metal products of complex curved shape.

3D Pen

Unlike traditional 3D printers, the Harvard “pen” is not tied to a particular printing site, but can move freely in space. The main problem faced by scientists is to determine the optimal distance between the pen-nozzle and the laser. To create objects such as wire butterflies go away in just a few seconds.

Butterflies printed in metallic ink

In the future, such hand-held 3D printers can find application in the printing of flexible portable electronics or in medical devices using metal structures that are created “in place”.


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