Scientists have created a new method for 3D printing living microbes

With a new technique that uses light and light to produce three-dimensional bacteria

resin filled with bacteria, scientists have successfullyprinted artificial biofilms. They resemble thin layers of microbial communities. The research team lured bacteria into 3D structures using LED light from a 3D printer of a stereolithography microbial bioprinting machine (SLAM). A stereolithographic projection machine can print at high resolution on the order of 18 microns - almost the same thickness as the diameter of a human cell.

In an article published in the journal Nano letters , researchers have proven that this technologycan be effectively used to create structurally defined microbial communities. They demonstrated the applicability of such 3D-printed biofilms for uranium biosensitivity and rare earth bioprocessing and showed how geometry affects the characteristics of created materials.

Previous methods of biofilm production inlaboratories did not give scientists the ability to control microbial organization in the film, which limited the ability to fully understand the complex interactions observed in bacterial communities in the natural world. The ability to bioprint microbes in 3D will enable LLNL scientists to better observe how bacteria function in their natural habitat and explore technologies such as microbial electrosynthesis. During this process, bacteria feeding on electrons (electrotrophs) convert excess electricity during off-peak hours. hours for the production of biofuels and biochemical products.

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