In this video excerpt from NOVA’s "Making Stuff: Smarter", host and New York Times technology columnist David Pogue visits Virginia Tech, where scientists are developing an artificial jellyfish that will act as an inconspicuous motion-detecting buoy for the Navy. The jellyfish is propelled by a shape-memory alloy that returns to its original shape after being exposed to heat. In the related demonstration, students discover some other shape-memory materials that can sense and respond to their environments. They also learn how materials scientists are developing new “smart” materials to help solve problems in engineering, medicine, and everyday life.
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