A robotic flea has been developed that is capable of jumping nearly 30 times its height, rubber band power. These tiny rubber band powered micro-robots could serve as ultra-small sensors. Swarms of such robots could eventually be used to create networks of distributed sensors for detecting chemicals or for military-surveillance purposes. Early tests show that the solar-powered autonomous "flea-bots" can store enough energy to make a 7-millimeter robot jump 200 millimeters high. This flea-like ballistic jumping would enable these sensors to be mobile, overcoming distances and obstacles that would normally be a major problem for micrometer-sized bots.
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