A robot made of Lego can quickly perform an important step for creating machines made of DNA
.at Arizona State University, who tasked his class with building tools using “frugal science”.
The robot that one group of students built has proved particularly useful and resembles a single arm topped with a holder for cylindrical tubes. It performs a procedure to mix the liquid contents of the tubes, first tilting the tubes from vertical to horizontal, then rapidly spinning them around. This creates a single liquid with a density that uniformly decreases from the bottom to the top.The robot’s parts, including gears, connecting blocks and two motors, all come from Lego kits.
After being mixed by the Lego robot, the liquid can be used for purifying tiny structures made of DNA molecules that researchers like Hariadi want to use as
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