Pop music makes solar cells produce more electricity
By James Urquhart | NewScientist
They really are picking up Good Vibrations. Some solar cells convert sunlight into electricity more efficiently when loud music is played to them – as long as it is pop rather than classical.
Traditional silicon-based solar cells convert sunlight into electricity efficiently, but they can be awkward to work with and expensive to produce. So Steve Dunn at Queen Mary University in London and James Durrant at Imperial College London have been experimenting with zinc oxide, which is much cheaper and can be made into thin, flexible films. The only drawback is that its efficiency is just 1.2 per cent, a small fraction of what silicon is capable of.
To improve this, Dunn and Durrant took advantage of another of zinc oxide’s properties. Nanoscale rods of the material wobble in response to mechanical stress – such as the vibrations produced by sound – and generate an electric field.
"We tried our initial tests with various types of music, including pop, rock and classical," says Dunn. Rock and pop were the most effective, perhaps because they have a wider range of frequencies. Using a signal generator to produce precisely measured sounds similar to ambient noise they saw a 50 per cent increase in efficiency, rising from 1.2 per cent without sound to 1.8 per cent with sound (Advanced Materials, DOI: 10.1002/adma.201303304).
The discovery could lead to the development of zinc-oxide solar arrays that can be deployed in noisy public places – next to busy roads, for example.
Read the full article at: newscientist.com
Listening to Mozart doubles survival rates after a heart transplant. Enya? No effect.
Archaeoacoustics: The Sound of Ancient Megalithic Structures
Our Ancestors, the Acoustical Engineers
Sound waves levitate and mix floating drops of liquid
Neuroscientists prove ultrasound can be tweaked to stimulate different sensations
Sonic Art – German Audio-Visual Artist Makes Pictures from Sound Waves
Resonance - Beings of Frequency
World’s Loneliest Whale Sings At The Wrong Frequency
Ancient Maya Temples Were Giant Loudspeakers?
Latest News from our Front Page
Gunman Storms Dutch TV Station Demanding Airtime
Dutch authorities have released few details about the bizarre case of 19-year-old Tarik Zahzah’s attack on the main news studio of television station NOS on Thursday. To get the obvious question out of the way first, the police say there is no evidence that Zahzah, who is half-Egyptian, acted on behalf of organized terrorism.
The authorities always say that on the ...
How Alan Dershowitz bullied rape victims to protect a serial child molester
Harvard law professor Alan Dershowitz always felt children were fair game for Israeli missiles. Now the question is whether he thinks they are fair game for the sexual exploits of his powerful associates and himself.
Dershowitz and the UK’s Prince Andrew were accused in a recent court filing of raping a teenage girl who was forced into sexual slavery by ...
This past week, the world's preeminent vultures, the economic power elite, met in Davos to discuss the maintenance of their global fiat hegemony. Highlights included furthering austerity, noting that the serf class can't have air conditioning and cars, as well as cheering on the death of privacy through the rise of technocracy. The degenerate elite, completely out of touch with ...
Men must prove a woman said ’Yes’ under tough new rape rules
New guidance will be issued to all police forces and prosecutors as part of a ’toolkit’ to move rape investigations into the 21st century
Men accused of date rape will need to convince police that a woman consented to sex as part of a major change in the way sex offences are investigated.
The Director of Public Prosecutions said it was ...
4 beheaded in Saudi Arabia less than a week into King Salman's rule
Comment: So when will the the "Human rights" promoting liberal west elite decide invade Saudi Arabia like they did Libya?
Members of Magic Movement stage a mock execution scene in protest of Saudi Arabia beheading of eight Bangladeshi workers in October 2011.
Four people have been executed in Saudi Arabia less than a week after 79-year-old King Salman assumed power following the ...
|More News » |