SHANGHAI: Scientists at Huajhong University of Science and Technology, China, have developed a hearing device that does not require a battery to do its job.
According to a report published in the latest issue of the research journal “ACS Nano”, a prototype of the device has been developed which has been successfully tested on an artificial ear.
This hearing aid actually replaces the most important part of the inner ear, the oyster, which converts sound waves into electrical signals and sends them to the brain. And thus enables us to hear.
The device uses nanoparticles of a substance called “barium tetanate” that collides with sound waves and converts the sound into electrical signals under a natural phenomenon called the “piezoelectric effect”. Are
It should be noted that deafness or improper functioning of the oyster is a major cause of deafness (hearing loss) which especially affects the elderly.
This prototype is of a very rudimentary nature and much work still needs to be done to enable it to be installed in a real human ear.
During tests on the artificial ear, the device converted the 170 Hz frequency sound into electrical signals that were recorded and heard, almost identical to the original sound.
It is hoped that this method will be able to make artificial oysters that do not require any maintenance or maintenance other than electricity.