The 3D 4D 5D Printing Revolution Rapid tooling
As reported by Experimental Eye Research, ” how stem cells (human corneal stromal cells) from a healthy donor cornea were mixed together with alginate and collagen to create a solution that could be printed, a ‘bio-ink’.
Using a simple low-cost 3D bio-printer, the bio-ink was successfully extruded in concentric circles to form the shape of a human cornea. It took less than 10 minutes to print.”
On the authority of Che Connon, Professor of Tissue Engineering at Newcastle University, who led the work, “Many teams across the world have been chasing the ideal bio-ink to make this process feasible.
Our unique gel – a combination of alginate and collagen – keeps the stem cells alive whilst producing a material which is stiff enough to hold its shape but soft enough to be squeezed out the nozzle of a 3D printer.
This builds upon our previous work in which we kept cells alive for weeks at room temperature within a similar hydrogel. Now we have a ready to use bio-ink containing stem cells allowing users to start printing tissues without having to worry about growing the cells separately.”
As said by Tibbits,” Possibilities from 4D printed materials that transform underwater, or fibers that snap into a particular shape. We want to think about what’s coming next and see if we can really lead that worked with Steelcase to develop a process for 3D printing plastic into the liquid for furniture parts, called rapid liquid printing. This process prints within a gel bath to provide support for the printed parts and minimize the effect of gravity. With this printing technique, they can print centimeter- to meter-scale parts in minutes to hours with a range of high-quality industrial materials like silicone rubber, polyurethane, and acrylics.”
According to Royal BAM Group and TechRadar, “European construction giant Royal Bam is hoping to use its 3D printing expertise to help in the building of Heathrow Airport planned expansion.”