paper which is cell-friendly. Afterwards, it prints out the living cell clusters onto the paper. After the clusters are placed close to one another, the cells naturally self-organize and morph into more complex tissue structures. The whole process is then repeated to add multiple layers with each layer separated by a thin piece of bio-paper. Eventually, the bio-paper dissolves and all of the layers become one.To get a further understanding of the methodology, it is important to understand the current challenges that go along with 'printing' artificial organs to be used in human bodies.As of now, scientists are only able to produce a maximum of about 2 inches of thickness. "When you print something very thick, the cells on the inside will die -- there's no nutrients getting in there -- so we need to print channels there and hope that they become blood vessels", explains Thomas Boland, an associate professor at Clemson University.
Woody H on 13 Feb 14"Holography is a technique which enables three-dimensional images (holograms) to be made. It involves the use of a laser, interference, diffraction, light intensity recording and suitable illumination of the recording. The image changes as the position and orientation of the viewing system changes in exactly the same way as if the object were still present, thus making the image appear three-dimensional. The holographic recording itself is not an image; it consists of an apparently random structure of either varying intensity, density or profile."
