I did my PhD on energy harvesting (specially focussing on hostile environments with high temperature or high radiation) around 15 years ago and harvesting from stray EM radiation was the holy grail for room temperature stuff where vibrations or heat gradients couldn’t be found.
If you’re willing to sacrifice always on connectivity and have a node report in on an infrequent basis then I always figured EM harvesting would be the way to go for most applications since even a tiny amount of energy can build up over time to become a useful amount.
I knew I’d gone deep into this world when I started thinking that micro watts was a large amount of power!
If you’re willing to sacrifice always on connectivity and have a node report in on an infrequent basis then I always figured EM harvesting would be the way to go for most applications since even a tiny amount of energy can build up over time to become a useful amount.
I knew I’d gone deep into this world when I started thinking that micro watts was a large amount of power!