Swiss and Dutch researchers have developed a material that allows the rotary to apply the method of 3D printing to create dimensional models of organs of hydrogels with living cells. The method differs from the traditional layer-by-layer 3D printing of that object is created simultaneously over the entire volume in a single step, which reduces the print time to a few tens of seconds, say the authors of the article in Advanced Materials.
In almost all methods of 3D printing object is formed by layering material. This allows you to create objects of almost any shape, including complex internal structure, but it causes the main drawback of 3D printing — a great time spent even creating small objects.
There are also less common methods to form a printed object simultaneously throughout the volume and thus saving time. One of these methods is somewhat like a CT scan — during which the vessel with a hardening under the action of irradiation of a liquid material is rotated and is irradiated with light from the projector. To the projector while alternately displays the projection of the 3D model from a certain angle. The intensity of the radiation is selected so that the subject was hardened only in the volumetric region where the light with different projections combined. After printing the remaining liquid precursor can be drained from the vessel, and get out the printed object.