Technology is Changing and improving at the same time the size of devices and equipments is reducing day by day. Recently, Researchers from Case Western University have developed a hearing device which is considerably smaller than the size of our Eardrum.
Taking about the drumheads as per the researchers, they are 10 trillion times lesser in volume and 100,000 times thinner than a human eardrum, at that same time the drums can hear or sense sounds way beyond that of the human ear is capable.
These synthetic drums offers :
- Abroad dynamic range up to ~110dB.
- Radio frequencies up to 120MHz.
Comparing it with the human eardrum, the human eardrum provides the dynamic range of up to 100dB in the range of 10Hz to 10KHz. This means that human Eardrums are nowhere near to these artificial drums.
Associate professor of electrical engineering and computer science at the university, Philip Feng, said while talking about the new drum:
“What we’ve done here is to show that some ultimately miniaturized, atomically thin electromechanical drumhead resonators can offer remarkably broad dynamic range, up to ~110dB, at radio frequencies (RF) up to over 120MHz.”
Feng with his mates has made the synthetic drums out of atomic layers of semiconductor crystals. The team exfoliated atomic layers from the semiconductor crystal and used a composite of nanofabrication and micromanipulation techniques to suspend the atomic-layers over micro-cavities pre-defined on a silicon wafer.
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Feny and his team members are very proud of what they have built.Feng also said;
“Not only having a surprisingly large dynamic range with such tiny volume and mass, they are also energy-efficient and very ‘quiet’ devices,”
Their ambition with these new ‘drums’ is that they will be able to drive the next generation of communication, and sensory devices.
Source: Science Daily.