[ewoodrich]

Not really.

Most NAND flash use floating gate-mosfets (a type of transistor), which work by storing a very small amount of electricity within a high resistance material to prevent dissipation when in the "on-state". But this charge is extremely negligible in terms of mass, and energy. And depending on the particular memory used, the "off-state" could carry a charge as well.

Interesting to think about though.

(and to clarify, this energy is coming from the device's battery, not the RF energy or something else OTA)