It’s quite impressive how science has been able to miniaturize certain things over the past decade. But nothing is quite impressive as this: a 3D printed tugboat that is a third smaller than the thickness of a human hair. Physicists at Leiden University in the Netherlands are the ones behind this achievement and the goal is to understand how “microswimmers” such as bacteria move through liquids.
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Source : This 3D Printed Boat Is Smaller Than a Single Human Hair
