A classic movie was once promoted with the punchline: 'In space, no one can hear you scream'. Physicists have now demonstrated, to the contrary, that in certain situations sound can be transmitted strongly across a vacuum region!
A classic movie was once promoted with the punchline:"In space, no one can hear you scream." Physicists Zhuoran Geng and Ilari Maasilta from the Nanoscience Center at the University of Jyväskylä, Finland, have demonstrated, on the contrary, that in certain situations sound can be transmitted strongly across a vacuum region!
In a recent publication they show that in some cases a sound wave can jump or"tunnel" fully across a vacuum gap between two solids if the materials in question are piezoelectric. In such materials, vibrations produce an electrical response, as well, and since an electric field can exist in vacuum, it can transmit the sound waves across. The requirement is that the size of the gap is smaller than the wavelength of the sound wave.
- In most cases the effect is small, but we also found situations, where the full energy of the wave jumps across the vacuum with 100 % efficiency, without any reflections. As such, the phenomenon could find applications in microelectromechanical components and in the control of heat, says professor Ilari Maasilta from the Nanoscience Center at the University of Jyväskylä.
The study was funded by the Academy of Finland and European Union's Horizon 2020 program, and was published in the journal Communications Physics, on 15th July 2023.
Malaysia Latest News, Malaysia Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Dolphins and Whales News -- ScienceDailyWhales and dolphins. Whale songs, beaching, endangered status -- current research news on all cetaceans.
Read more »
Materials Science News -- ScienceDailyMaterials Science News and Research. Read all the latest in materials engineering, chemical engineering, and more.
Read more »
Insects (including Butterflies) News -- ScienceDailyCurrent event articles on insects and butterflies. Read about insect bites, butterfly migration, caterpillar growth, which insects are beneficial and how to deal with pests.
Read more »
Quantum Computers News -- ScienceDailyQuantum Computer Research. Read the latest news in developing quantum computers.
Read more »
Infectious Diseases News -- ScienceDailyRead the latest medical research on the prevention, management, and treatment of infectious diseases. Read articles on HINI, influenza, C. difficile, HIV and AIDS, hepatitis, herpes, STDs and more.
Read more »
Patient Education and Counseling News -- ScienceDailyRead about current research on quality of life issues for patients, patient education and counseling.
Read more »