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US 2013/0278109 A1Published application
Betavoltaic power sources for mobile device applications
AssigneeUltratech, Inc.
InventorsArthur W. Zafiropoulo, Andrew M. Hawryluk
Life of this patent
Estimating the term…
Abstract
A betavoltaic power source for mobile devices and mobile applications includes a stacked configuration of isotope layers and energy conversion layers. The isotope layers have a half-life of between about 0.5 years and about 5 years and generate radiation with energy in the range from about 15 keV to about 200 keV. The betavoltaic power source is configured to provide sufficient power to operate the mobile device over its useful lifetime.
Claims20
A betavoltaic power source for a mobile device having a useful lifetime, comprising:
- a plurality of isotope layers, with each isotope layer comprising an isotope material that emits radiation as either beta particles, x-rays or gamma rays having an amount of energy that is greater than about 15 keV and less than about 200 keV, and a half-life that is between about 0.5 years and about 5 years;
- and
- a plurality of energy conversion layers interposed between some or all the isotope layers and that receive and convert the energy from the radiation into electrical energy sufficient to power the mobile device over the useful lifetime.
A betavoltaic power source for a mobile device having a useful lifetime, comprising:
- a plurality of isotope layers, with each isotope layer comprising an isotope material that emits radiation having an amount of energy that is greater than about 15 keV and less than about 200 keV, and a half-life that is between about 0.5 years and about 5 years;
- and
- a plurality of energy conversion layers interposed between some or all the isotope layers and that receive and convert the energy from the radiation into electrical energy of no less than 10 mw to power the mobile device over the useful lifetime.
Dependencies are inferred from the claim text.