Ear implant uses lasers to deliver accurate sound

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Typical cochlear implant use electrodes to deliver sounds accurately to the hearing-impaired wearer. Researchers from the Centre Suisse d’Electronique et Microtechnique (CSEM), a Swiss research and development non-profit, have used the alternative method of laser pulses to create accurate sound depiction in its new prototype hearing implant. Multiple near-infrared lasers produce the soundwave, and small cavity surface-emitting lasers pulsate light and act with the fluids within the cochlear canals of the ear. This means the liquid inside the cochlea absorbs the infrared light. Drops of liquid within the ear expand in high temperatures, which generates a soundwave inside the ear duct…

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