When piezos get small enough it will be possible to directly convert the thermal energy of gas molecules into electricity. A molecule heating such a piezo will bounce back into the gas with a lower energy therefor reducing the temperature of the gas, a direct conversion of thermal energy to electricity.
This is very good! Now nanotechnology have it's own batteries.
And they can be charged while walking!
It's worth mentioning though, that viruses aren't living organisms, but actually chemical structures that affect the living bacteria or cells.
They reproduce due to chemical principles.
Nevertheless, this is a phenomenal breakthrough! Let's see how long until this finding hits the market in a real product.