Harvard University

Harvard University Developed a New Printing Technique Using Sound Waves


The engineering school at Harvard University recently designed a new printing technique that will control and fire droplets from a nozzle at a very fast speed by using sound waves. This latest technique was issued in a paper of the journal – Science Advances.

This will enable researchers to print with liquids which is the thickest and more viscous ever. These vibrations can help in fluidly printing liquid metals, honey, and stem-cell-based inks that emerges from previously used acoustic techniques by the researchers for levitating the liquids and not to print them.

According to LiveScience, the moment sound waves crash into objects, the pressure is exerted on them. Researchers have been experimenting on whether the pressure to pull and push the things, make them levitated or not. The same kind of pressure has been used by the scientists to accurately mechanize the ink filled inside a printer.

Daniele Foresti, lead author of this study and also a research associate in materials science and mechanical engineering at Harvard University’s School of Engineering Applied Sciences, in a statement, stated:

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“Our goal was to take viscosity [the thickness of the liquid] out of the picture by developing a printing system that is independent of the material properties of the fluid.” He added, “The idea is to generate an acoustic field that literally detaches tiny droplets from the nozzle, much like picking apples from a tree.”