In 2020, NDB announced two proof-of-concept tests conducted at the Cavendish Laboratory at Cambridge University and Lawrence Livermore National Laboratory in California. As stated above, the Nano-diamond battery from the NDB used nuclear waste to generate power. The radioactive core is protected with multiple layers of synthetic diamonds or polycrystalline diamond.

The polycrystalline diamond is an exceptionally thermally conductive material. This material also contains radiation within the device. The use of a polycrystalline diamond makes the Nano-diamond battery immensely tough and tamperproof.

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Source: AZONANO