Tiny batteries that draw energy from radioactive isotopes could provide 50 years of power for micro-devices and electronics, its inventors say.
The battery is fuelled by the radioactive isotope nickel-63. "It might be possible to make really tiny microelectronic sensor systems that can be
embedded in a building or even in the body," says Amil Lal, who developed the system with colleagues at Cornell University, New York.
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