Home > News > Nanotube sheets pave way for future flat speakers
November 1st, 2008
Nanotube sheets pave way for future flat speakers
Abstract:
A Chinese research team has moved a step closer to realising flat speakers that will be much cheaper than the existing ones, for they have found that sheets made of carbon nanotubes behave like a loudspeaker when zapped with a varying electric current.
Shoushan Fan and his colleagues at Tsinghua University and Beijing Normal University have become the research team to study the acoustic properties of nanotubes.
For their study, the researchers created a think sheet by roughly aligning many 10-nanometer-diameter carbon nanotubes.
Upon sending an audio frequency current through the sheet, the researchers found that it acted as a loudspeaker.
Fan thinks that the nanotube speaker functions as a thermoacoustic device.
He says when an alternating current passes through it, the nanotube sheet alternates between room temperature and 80 degree Celcius, and such rapid temperature oscillations lead to pressure oscillations in the air next to the film.
Source:
britainnews.net
Bookmark:
| Related News Press |
News and information
Gene therapy relieves back pain, repairs damaged disc in mice: Study suggests nanocarriers loaded with DNA could replace opioids May 17th, 2024
Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in cuprate superconductor May 17th, 2024
Nanotubes/Buckyballs/Fullerenes/Nanorods/Nanostrings
Tests find no free-standing nanotubes released from tire tread wear September 8th, 2023
Detection of bacteria and viruses with fluorescent nanotubes July 21st, 2023
Discoveries
Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024
Finding quantum order in chaos May 17th, 2024
Advances in priming B cell immunity against HIV pave the way to future HIV vaccines, shows quartet of new studies May 17th, 2024
Announcements
Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024
Finding quantum order in chaos May 17th, 2024
Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in cuprate superconductor May 17th, 2024
 |
||
 |
||
| The latest news from around the world, FREE | ||
 |
||
|
|
||
| Premium Products | ||
 |
||
|
Only the news you want to read!
Learn More |
||
 |
||
|
Full-service, expert consulting
Learn More |
||
|
|
||