A biological battery

Plugging into sources of energy within our body — such as heat, internal motion or metabolites — to power implanted medical devices has long been the goal of biomedical engineers. Now researchers based in Cambridge, Massachusetts have demonstrated that a sensing device embedded in the ear can be powered by the ear’s own electrochemical battery.

Our auditory mechanism picks up external sounds and sends information to the brain in the form of neural signals. When the sound wave hits the ear, the eardrum vibrates in response. This mechanical energy must to be converted into an appropriate electrochemical impulse.  Read more…

Source: The Hindu

 

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