The new liquid system consists of a mixture of two immiscible aqueous phases, the interface of which possesses an ultra-low interfacial tension which is super-sensitive to stimulation of sound waves, i.e. any sound, audible or inaudible, can be “visualized” along the water-water interface, as reported by the University.
In this research, the musical notes of Beethoven’s 5th symphony manifested themselves when passing through the aqueous interface of the system. And when translated back to music, the accuracy was over 97%, which illustrates the high sensitivity of the interface in detecting sound waves.
Besides audible sound, the system is capable of detecting sound waves with frequency lower than 20 Hertz, i.e., inaudible to human beings. The assumption is that this new water-water system, will allow us to hear sounds that are currently unknown to us. This would not only allow monitoring of infra-sounds generated by windmills or large electronic appliances such as air-conditioners, but also provides an opportunity to understand the communication among huge animals, such as elephants and whales, that communicate through inaudibly pitches at frequencies that can go below 10 Hertz.
The human body contains small fluctuations, such as the heart beat and breathing cycle, and in Chinese medicine, patterns of pulses are a way to diagnose the patient’s body conditions.
This approach provides a potential solution for capturing precise measurements of these pulses and messages emitted by body organs or tissues, which are transmitted through the bloodstream or body fluid. It will facilitate the development of relevant health technologies such as human body acoustics, or diagnosis of diseases.
Source | The University of Hong Kong
| Research in China by JIJITANG