A bubble microrobot, visible in the top center, arranged tiny glass beads to form the HU acronym
Air bubbles in a saline solution can be controlled with high precision by a laser beam, which effectively turns them into microrobots capable of assembling microstructures
Building robots out of bubbles is an intriguing idea in its own right, but propelling them with lasers is just plain crazy. The bubble microrobots, devised by the researchers from the University of Hawaii at Manoa, have no mechanical parts whatsoever, but can nevertheless be manipulated with very high precision. Combined into complex robotic systems, they could potentially be used to assemble larger objects, such as biological cells.
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