| According to foreign media reports, researchers at the Massachusetts Institute of Technology (MIT) have developed a new 3D printer technology based on genetically engineered bacterial cells to give people a more personalized 'tattoo' For example, let it change color under certain chemical stimuli.  Obviously, everyone's imagination about electronic tattoos and smart ink technologies allows us to rethink and design such wearable sensing devices that respond to multiple stimuli. MIT engineers have invented a new type of 3D printing technology whose 'inks' are made of genetically engineered living cells.While many engineers are busy experimenting with a wide range of responsive materials, one MIT team whims To use some kind of living cells, their first step is to study how organic cells are used. The results show that the powerful cell walls of bacteria make it the best choice for this application because they survive the nozzle of 3D printers.In addition, bacteria have also been shown to be completely hydrogel-compatible with precision 3D printing Compatible. The team looked to the future of the technology, such as creating a new drug delivery system.To test the technology, the team 3D printed a bacterial cell on a tree-like elastomer layer Stickers, and on each branch of the trunk there are bacteria that react differently to different chemical stimuli. When testing patches for different target chemistries, the bacteria can successfully "turn on" the corresponding branches as the corresponding chemicals are sensed. The researchers say the technology is expected to drive some kind of 'living computer' in the future, and we could create complex engineering structures that contain many different types of engineering cells that will communicate with each other on the same chip as the transistors Details, has been published in the recently published "Advanced Materials" (Advanced Materials) journals. |
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