Batteries used to be the only way to power implantable gadgets, but additional surgeries are needed to replace the power packs once their juice runs out - a less-than-ideal solution for patients. Recent discoveries, however, have such medgadgets being powered by photons, hip hop and now high-frequency radio waves. Electrical engineers at Stanford built a cardiac device that uses a combination of inductive and radiative transmission of power, at about 1.7 billion cycles per second, to its coiled receiving antenna.
Engadget , Stanford researchers make heart implant powered by radio waves, put batteries out of a job, Stanford researchers make heart implant powered by radio waves, put batteries out of a job
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