Methods for fabrication, manufacture and production of an autonomous electrical power source
View Patent ↗A unique, environmentally-friendly micron scale autonomous electrical power source is provided in a configuration that generates renewable energy for use in electronic systems, electronic devices and electronic system components. The configuration includes a first conductor with a facing surface conditioned to have a low work function, a second conductor with a facing surface having a comparatively higher work function, and a dielectric layer, not more than 200 Angstrom thick, sandwiched between the respective facing surfaces of the first conductor and the second conductor. The autonomous electrical power source formed according to the disclosed method is configured to harvest minimal thermal energy from any source in an environment above absolute zero. An autonomous electrical power source component is also provided that includes a plurality of autonomous electrical power source constituent elements electrically connected to one another to increase a power output of the autonomous electrical power source.
1. An electrical power source, comprising:
a plurality of electrical power source elements, each electrical power source element comprising:
a first conductor formed of a first conductive material and having a first surface and a second surface, the first surface having a work function in a range of 1.0 electron volts (eV) or less,
a second conductor formed of a second conductive material and having a first surface and a second surface, the first surface having a work function in a range of 2.0 eV or greater, and facing the first surface of the first conductor with a gap formed between the first surface of the first conductor and the first surface of the second conductor, the gap being in a range of 200 angstroms or less; and
a dielectric layer formed in the gap between the first surface of the first conductor and the first surface of the second conductor;
each of the plurality of electrical power source elements being configured to generate an electric potential between the first conductor and the second conductor at any temperature above absolute zero; and
a plurality of insulating layers arranged in a stack with one of the plurality of electrical power source elements interposed between each facing pair of insulating layers;
the plurality of electrical power source elements being electrically interconnected with one another.
2. The electrical power source of claim 1 , each of the electric power source elements being less than 300 nm thick.
3. The electrical power source of claim 1 , wherein each of the plurality of insulating layers has a thickness of 10 μm or less.
4. The electrical power source of claim 1 , the dielectric layer (1) having a thickness of 200 angstroms or less, and (2) being sandwiched between the first surface of the first conductor and the first surface of the second conductor.
5. The electrical power source of claim 1 , further comprising:
at least 50 electrical power source elements separated by the plurality of insulating layers in a stacked configuration, each of the electrical power source elements being electrically interconnected with an adjacent electrical power source element in the stacked configuration;
a first electrical lead attached to the second surface of the first conductor at a first outermost end of the stacked configuration;
a second electrical lead attached to the second surface of the second conductor at a second outermost end of the stack opposite the first outermost end of the stacked configuration; and
an outer insulating layer substantially encasing the stacked configuration;
an overall thickness of the encased stacked configuration of the electrical power source being in a range of 50 mils or less.