In the latest issue of Science Advances, scientists from South Korea published an article on a new technology for converting 2D drawings and drawings into 3D objects.
The method consists of three stages: first, a two-dimensional image is applied to the volumetric object using a special pen, after which it is immersed in a bath of water. When removed from water, the ink is partially removed, forming a three-dimensional version of the original image.
The ink consists of two components – a non-adhesive surfactant and an inactive surfactant that adheres well to the material. The pen is equipped with buttons to control the process of supplying certain ink when drawing.
To illustrate the technology, scientists drew four red petals on a stone, linked together in the center by a black “anchor”. When placed in water, the active substance separated from the stone, while black ink held the flower at the base. As a result, a 3D object was formed – petals “grown” from a black core on a stone.
By the way, after the first experiments, it turned out that the 3D object disintegrates after being removed from the water. To solve this problem, the researchers added iron microparticles to the ink, and potassium persulfate to the aqueous solution.
After modifying the method, scientists propose using the new technology in manufacturing applications. For example, customers receive a certain product in a flat two-dimensional form, after which they independently place it in an aqueous solution, obtaining the desired volumetric shape.