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Nokia hopes to create a device that could harvest enough power to keep a cell phone topped up.
Self-organizing equipment could cut energy bills.
A new control process may enable practical fusion reactors.
Nanoporous silicon that soaks up ions without self-destructing can make better batteries.
Ener-G-Rotors’ system harvests energy at lower temperatures.
A novel design could boost energy storage.
A low-power chip could be used for implantable medical sensors.