Subscription Center
Dec 8, 2008 | 1
American research firm SRI International and Japan's Hyper Drive Corporation today are testing the latest generation of their jointly developed buoy-mounted, ocean wave-powered generator off the coast of Santa Cruz, Calif. As the generator bobs up and down, an accordionlike device inside, made of artificial muscle called Electroactive Polymer Artificial Muscle (EPAM), stretches and contracts, creating mechanical energy that is converted into electricity.
SRI is hoping to demonstrate its ability to generate at least 10 Watts of power in waves about 3.3 feet (one meter) in height, a stepping stone to the 100-Watt capacity the researchers hope to be able to generate within a few years. One of their goals is to replace the 25-Watt batteries that navigation buoys use today with a source of renewable energy that can power additional equipment such as cameras and storm warning sensors.
See what we're tweeting about
Deadline: Jul 25 2013
Reward: Varies
This challenge provides an opportunity for Solvers to build a web-based or mobile “app” to explore data relationships in scholarly conte
Deadline: Jul 30 2013
Reward: $100,000 USD
The Seeker desires a method for producing pseudoephedrine products in such a way that it will be extremely difficult for clandestine che
Powered By: 
YES! Send me a free issue of Scientific American with no obligation to continue the subscription. If I like it, I will be billed for the one-year subscription.
