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Posted by on Aug 27, 2012 in Science |

3D laser printer used as biological tissue to grow

3D laser printer used as biological tissue to grow

(C) TU Wien

While there are many ways to create micron-scale three-dimensional objects, none so far on that scale could modify the chemical properties of a material.

A new method called “Fotoinjerto dimensional”, developed by scientists at the Vienna University of Technology , allow insert specific molecules with high accuracy in a three-dimensional material that would stand for growing biological or creating micro sensors.

“Creating a material when its smaller bricks have different chemical properties is incredibly complex,” says Aleksandr Ovsianikov, one of the authors of scientific publication . “That’s why we need a three-dimensional support structure which was later annexed the desired molecules in a specific position.”

Therefore the method is to use hydrogel -macromolecules made of a material arranged in a loose, porous network, which is introduced with the laser molecules fit the desired location. “Like when an artist paints a picture in certain colors,” says Ovsianikov, “but in three dimensions and with high precision.”

This approach would artificially cultivating biological tissue by positioning chains of amino acids that specifically indicate where living cells engraft, whereas previously they could be performed in two-dimensional surfaces, a technique was needed in three dimensions in order to grow larger and more complex tissues with a particular internal structure.

While other scientists proposed application is to create a microscopic ‘lab on a chip’, allowing the detection of specific chemicals to create a material with molecules that react to certain substance in the environment.

Link: Laser Beam as a ’3-D Painter ‘to Grow or to Create Biological Tissue Micro Sensors (Science Daily)

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