Battery-free implantable medical device draws energy from human body

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Researchers from the Universities of California and Connecticut have created a battery-free medical device that can be implanted in the body and charged using the body’s fluids. Despite advances in technology, batteries are still used within medical devices such as pacemakers, which are potentially harmful and need to be replaced throughout a person’s lifetime via surgery. The researchers have designed a bio-friendly supercapacitor system that charges up using electrolytes from biological fluids, such as blood and urine. It comprises of a carbon nanomaterial called graphene layered with modified human proteins as an electrode. The system works in tandem with an energy…

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