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posted by janrinok on Tuesday October 29 2019, @07:22PM   Printer-friendly
from the drip,-drip,-drip dept.

Submitted via IRC for Fnord666

New method promises advances in 3D printing, manufacturing and biomedical applications

Although both 3D printers and traditional manufacturers already use droplets to carefully add material to their products, the new jet method offers greater flexibility and precision than standard techniques, the researchers said. For example, delivering droplets with jets allows for extremely small sizes and allows designers to change droplet sizes, shapes and dispersion, as well as patterns of droplets, on the fly.

"A key aspect is the simplicity of the method," said Pierre-Thomas Brun, an assistant professor of chemical and biological engineering at Princeton and the lead researcher. "You draw something on the computer, and you can create it."

In an article published Oct. 28 in the Proceedings of the National Academy of Sciences, the researchers describe how to control the dispersion of drops from a thin jet of liquid. They were able to inject calibrated droplets of glycerin into a liquid polymer to demonstrate placement over three dimensions -- a key requirement for manufacturing. By curing the polymer, the researchers were able to affix the droplets in desired locations. Although the researchers used glycerin for the experiment, they said the method would work with a wide variety of substances commonly used in manufacturing and research.

Journal Reference:

Lingzhi Cai, Joel Marthelot, and P.-T. Brun. Unbounded microfluidics: Rayleigh-Plateau instability of a viscous jet in a viscous bath. PNAS, 2019 DOI: 10.1073/pnas.1914270116


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  • (Score: 3, Funny) by ikanreed on Tuesday October 29 2019, @08:15PM (2 children)

    by ikanreed (3164) Subscriber Badge on Tuesday October 29 2019, @08:15PM (#913405) Journal

    We've hidden it in 7 pieces across the land. You will have to gather your trusty companions and collect them all and bring them to the west where they can be reassembled. But beware that the evil monster seeks them as well

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  • (Score: 2) by RS3 on Tuesday October 29 2019, @11:31PM

    by RS3 (6367) on Tuesday October 29 2019, @11:31PM (#913495)

    Reminds me of some Dr. Who episodes where he has to find the 6 segments of the Key to Time to defeat the Black Guardian.

  • (Score: 3, Funny) by DeathMonkey on Wednesday October 30 2019, @05:45PM

    by DeathMonkey (1380) on Wednesday October 30 2019, @05:45PM (#913804) Journal

    But beware that the evil monster seeks them as well

    I'm opposed to a morals and money based approval system for necessary medical care. Therefore I support Medicare 4 All and a needs based system.

    So, unfortunately, I think that means we need to give Ethanol Fueled a headstart in his seeking.

    Thank liver of his is on its last legs!