Just imagine how amazing would it be to have the incredible hearing abilities of a cat. Well, if you are one of those people who would love to have super-hearing, we have some good news for you. It seems that a team of scientists is developing an extremely thin device, the size of an atom, that can receive and transmit signals across a radio frequency a lot greater than that of normal human hearing. The researchers at Case Western Reserve University in the United States are currently trying to develop this so-called “drumhead” device.
The idea is for it to be 100,000 thinner and a trillion times smaller in volume than the normal human eardrum. According to the researchers, should this development be successful, it could lead to the next generation of sensory devices and ultra-low-power communications. They would all be a lot smaller and have greater tuning ranges and detection. It’s worth noting that human eardrums have the dynamic range of 60 to 100 dB. The range is between 10Hz and 10kHz. Our hearing decreases quickly outside of this frequency range.
Humans might soon have cat-like hearing
Philip Feng and his team are now trying to develop vibrating nanoscale drumheads made of atomic layers of semiconductor crystals. Their diameters are of only one micron. It’s interesting that the team has also managed to demonstrate the capability of these key components at the smallest scale possible right now.
According to them, only larger transducers operating at much lower frequencies have managed to attain that range. For example, the human eardrum. According to Feng, his team has managed to demonstrate that extremely small electromechanical drumhead resonators are able to offer a very broad dynamic range. The dynamic ranges at radio frequencies (over 120 MHZ), can be compared to the dynamic range of human hearing in audio bands.
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