3 ms·

So interesting. You could tie this to a sensor in areas that are supposed to be dry. If they get wet, they trigger the battery and a pulse or an alarm. So much

So interesting. You could tie this to a sensor in areas that are supposed to be dry. If they get wet, they trigger the battery and a pulse or an alarm. So much potential!!

sandworm101 4y ago
But there are already a hundred different methods for doing this. Saltwater batteries, the type that power emergency lights in life rafts, activate upon contact with water. You just need any two dry electrodes that, when in contact with not-pure water, result in a current. I'm not sure that the novelty of making them out of ink would change things. https://en.wikipedia.org/wiki/Water-activated_battery https://en.wikipedia.org/wiki/Water-activated_battery