Researchers at the Beckman Institute have created a method for 3D printing and modifying structural hues in the visible spectrum, ranging from deep blue to orange. During the printing process, the UV-assisted direct-ink-write 3D printing method may change the structural color to produce vivid and possibly more sustainable hues. A sustainable method for 3D printing different dynamic colors from a single ink was discovered by researchers, who were inspired by the color-changing properties of chameleons. According to Ying Diao, an associate professor of chemistry and chemical and biomolecular engineering at the University of Illinois Urbana-Champaign and a researcher at the Beckman Institute for Advanced Science and Technology, "We can modulate structural color on the fly to produce color gradients not possible before." Therefore, this discovery is a revolutionary one for sure.

The Inspiration Behind the Discovery~

Nature's design principles come into play when a chameleon changes color from turquoise to pink to orange to green. The lizard's skin is being seamlessly and silently camouflaged to fit its surroundings by sophisticated nano-mechanics. A Northwestern University team has created a unique nanolaser that uses the same principle as chameleons to change hues, drawing inspiration from nature. The research may pave the way for developments in ultra-sensitive strain sensors, wearable photonic devices, and flexible optical displays for smartphones and televisions.

This Work Is a Great Illustration of the Power of Collaboration ~

Here, Diao and his colleagues describe a UV-assisted direct-ink-write 3D printing method that can modify structural color while printing by adjusting the light to regulate the evaporative assembly of specifically engineered crosslinking polymers. The structural colors that are prevalent in many biological systems originate from nano-textured surfaces that obstruct visible light, in contrast to conventional colors, which are derived from chemical pigments or dyes that absorb light. Lead author and Diao Lab graduate student Sanghyun Jeon stated, "This makes them more vibrant and potentially more sustainable." In the visible wavelength region, from deep blue to orange, the researchers can synthesize structural colors. The study team utilizes a single ink and changes the printing process to obtain the color gradient, whereas an artist may use several different paints. "The research demonstrates the value of our collective experiences in learning from one another's triumphs and setbacks," stated coauthor Simon Rogers, an associate professor of chemical and biomolecular engineering.

“The biggest challenge of the polymer synthesis is combining the precision required for the nanoscale assembly with the production of the large amounts of material necessary for the 3D-printing process,” said co-author Damien Guironnet, a professor of chemical and biomolecular engineering. The color spectrum that can be obtained with this technology, according to the researchers, is not very wide, but they are trying to increase it by finding out more about the dynamics of how the layers grow in this process. The team is also attempting to increase the process's industrial relevance because the existing approach is not ideal for printing in huge quantities. The color spectrum that can be obtained with this technology, according to the researchers, is not very wide, but the team is trying to increase it by finding out more about the dynamics of how the layers grow in the entire process. The team is also attempting to increase the process's industrial relevance because the existing approach is not ideal for printing in huge quantities.

"You can't have an industrial revolution, you can't have democracies, you can't have populations who can govern themselves until you have literacy. The printing press simply unlocked literacy." ~
Howard Rheingold (Howard Rheingold is an American critic, writer, and teacher, known for his specialties on the cultural, social, and political implications of modern communication media such as the Internet, mobile telephony, and virtual communities.)