The 3D printing It has helped to create objects in different industries with different production process. But one of its challenges is optimizing production time and science Germany They found a solution.

members University of Heidelberg Micro, Nano and Molecular Systems Laboratory They were able to establish a technique for imprinting objects through sound, using multiple acoustic holograms to generate pressure fields and thus solid particles, gel beads, and biological cells.

The difference with the traditional process is that this method has to be done layer by layer, while with sound you can create building blocks in one step.

“We were able to assemble the microparticles into a three-dimensional object in a single shot using shape ultrasound,” said Kai Melde, a scientist who is part of the research team.

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How does this method work?

In order to make 3D printing possible in this way, researchers have developed a technology in which sound waves They exert force on the matter and in this way the object is molded.

This is done with high-frequency ultrasound, which is inaudible to the human ear. Also, the wavelength is less than a millimeter, making it an ideal technique for manipulating biological cells.

For this reason, the scientists believe that this discovery could be “very useful for bioprinting. The cells used in this process are particularly sensitive to the environment.”

Then they took advantage of an important factor of ultrasound, which was the ability to assemble materials that had two-dimensional patterns and therefore consolidated production.

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An important point of this method is that it allows free-floating particles and cells in the water to combine with others to form. three-dimensional object.

The scientists believe that their technology is a promising platform for the formation of 3D cell and tissue cultures. As part of their analyses, they found that the advantage of ultrasound is that it is gentle on biological cells and that it can penetrate deep into tissues. In this way, it can be used to manipulate cells remotely without damaging them.

This method not only works on elements such as cells, but they have also successfully tested it on other materials such as glass beads and Hydrogel.

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3D printed skin supplements

The first part of this plan is done Skin360The technology, which was presented at CES 2020 by the company, in which people take photos of their skin and the system, through artificial intelligence, tells them what supplements they should take for their care.

For the diagnostic process, the software uses more than 100,000 pixels of skin and analyzes nearly 2,000 attributes, gathering data to determine the nutrients and routines each person needs.

After the assessment that this tool makes, taking into account a questionnaire that contains care goals and questions about health status, the next step comes with 3D printing.

The system recommends ideal vitamins and is tasked with printing gums that have seven layers to personalize each one, they are vegan, sugar-free and shipped daily in biodegradable packaging.

Among the components that these supplements provide to the skin are nutrients such as CoQ10 and riboflavin, vitamins such as A, E and C, as well as selenium, zinc, astazine and biotin.

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