Play is often referred to as the ‘work’ of children, and sometimes those interests overlap into the research of adult scientists too, gleaning inspiration from popular building blocks and materials like LEGOs and Play-Doh. Of course, in the world of grownup science and 3D printing innovation, the projects are just a tiny bit more complex—and with an emphasis on tiny—no wait, make that microscopic!
Chemists from the New York University Department of Chemistry and the School of Chemical Engineering at Sungkyunkwan University (SKKU) in Suwon, South Korea are creating ways to make structures tinier in width than a piece of your hair. Borrowing from material elements in both LEGOs and Play-Doh, they have been able to create ‘patchy particles.’ Their research, outlined in the paper ‘Patchy particles made by colloidal fusion,’ was published recently in Nature:
“Using coordination dynamics and wetting forces, we engineer hybrid liquid–solid clusters that evolve into particles with a range of patchy surface morphologies on addition of a plasticizer,” state the researchers in their abstract. “We are able to predict and control the evolutionary pathway by considering surface-energy minimization, leading to two main branches of product: first, spherical particles with liquid surface patches, capable of forming curable bonds with neighbouring particles to assemble robust supracolloidal structures; and second, particles with a faceted liquid compartment, which can be cured and purified to yield colloidal polyhedra.
These findings outline a scalable strategy for the synthesis of patchy particles, first by designing their surface patterns by computer simulation, and then by recreating them in the laboratory with high fidelity.”
According to the scientists, they can make an infinite number of architectures with these innovative particles that are able to assemble themselves into place, not unlike atomic crystals moving into place.
“Imagine that you want to build a castle, but instead of handpicking the bricks and patiently connecting them one by one, you simply shake the box of pieces so that they magically connect to one another in forming a full-featured castle,” says Stefano Sacanna, an assistant professor in the New York University Department of Chemistry and one of the creators. “These smart particles represent an important step forward for the realization of self-assembling new materials and micro-machinery.”
“Colloidal self-assembly has the potential to revolutionize 3D printing,” he adds. “This could be achieved by not merely by further reducing the size of the printed architectures, but also by allowing us to ‘print’ functional architectures. Say you want to print a model car–using colloidal self- assembly, you could print a car that is a fraction of a millimeter and that could someday actually run!”
Because the creation of such miniature structures is challenging, Sacanna and the team chose a more efficient route in making them independent with self-assembly, even capable of understanding instruction regarding direction and connection.
“These particles will help us to understand—and allow to mimic—the self-assembling mechanisms that nature uses to generate complexity and functionalities from simple building blocks,” he says.
Sacanna worked on the colloidal fusion concept with Gi-Ra Yi from the School of Chemical Engineering at SKKU, along with two other NYU graduate students: Zhe Gong and Theodore Hueckel.
If you are wondering how Play-Doh came into the equation with this process, just imagine how it looks when you press together a variety of colors. With colloidal fusion, the pieces come together as multi-functional pieces rather than multi-colored. And the particles are made ‘smart’ thanks to Surface Evolver simulation software.
“The software allows us to predict how an initial cluster will evolve when ‘squeezed’ and how the resulting multifunctional patchy particle will look like,” says Sacanna.
What do you think of this news? Let us know your thoughts; join the discussion of this and other 3D printing topics at 3DPrintBoard.com or share your thoughts below.[Source / Images: NYU]
Subscribe to Our Email Newsletter
Stay up-to-date on all the latest news from the 3D printing industry and receive information and offers from third party vendors.
You May Also Like
CELLINK Bioprinter Enables Bioprinted Hair Follicles for Skin Regeneration and More
In a landmark achievement, researchers at Rensselaer Polytechnic Institute in New York have successfully 3D-printed hair follicles in lab-grown human skin tissue, marking a significant advancement in the field of...
Iowa Demolishes Its First 3D Printed Home
In May 2023, the city of Muscatine, Iowa embarked on an ambitious plan to construct 3D printed homes. The weekend before Thanksgiving, the first such home was demolished. This project,...
BICO’s Revival: A Fresh Era with Maria Forss at the Helm
Swedish biotech company BICO (STO: BICO) has been making waves in the industry recently. Ever since Maria Forss assumed the role of CEO in November 2023, the company seems to...
3D Printing Webinar and Event Roundup: November 26, 2023
Things are getting busy again in terms of 3D printing webinars and events! This week is the RSNA annual meeting, the World Manufacturing Forum, and more. HP is holding an...
Upload your 3D Models and get them printed quickly and efficiently.