Scientists Listen to Faint Sounds Inside Insects

May 14, 2010
Rendering of a ladybug being recorded by the atomic force microscope (AFM) probe.

(PhysOrg.com) -- A team of Clarkson University scientists led by Prof. Igor Sokolov are using atomic force microscopy (AFM) to record sounds emanating from inside living insects like flies, mosquitoes and ladybugs.

AFM is one of major scientific tools responsible for the emergence of modern nanotechnology.

The unprecedented sensitivity of AFM allowed the Clarkson team to record sub-nano oscillations of very faint amplitude (less than the size of one atom) at high frequencies (up to 1,000 hertz or cycles per second). Previous work in the study of was only done at up to 5 hertz. The sounds are recorded by touching the surface of the bugs with an AFM probe.

The study of these sounds may allow researchers to discover unknown features and physiology of insects. Sokolov hopes these discoveries may help in finding solutions to the problems caused by insect pests.

"Insects are of general interest not only as the most numerous and diverse group of animals on the planet, but also as highly efficient bio-machines varying greatly in size," says Sokolov. "Some are major agricultural pests and competitors of humans for crops. Mosquitoes and other insects are important vectors of plant, animal, and human diseases. Also, vast lands of the earth are still underdeveloped because they are occupied by blood-sucking insects."

You can listen to audio files of the internal sounds of mosquitoes, flies, and :

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The Sokolov team’s research is published in the top journal of applied physics, , at http://apl.aip.org/applab/v96/i4/p043701_s1 .

The team consisted of Sokolov, who has appointments in Physics, and Chemistry and Biomolecular Science; Maxim Dokukin, a physics postdoctoral fellow; and Nataliia Guz, a physics graduate student; and Sergey Vasilyev, instrumental scientist. The other members of Sokolov’s group, physics graduate students Dmytro Volkov, Ravi Gaikwad, and Shyuzhene Li, work on biosensors, self-assembly of particles, and the study of skin aging.

Explore further: Scientists unveil new technology to better understand small clusters of atoms

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Royale
not rated yet May 14, 2010
That lady bug sounds like a record would without the divots. That's pretty much what they're doing here isn't it? Playing insects like records at the nanoscale?