electret


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electret

[ilek′trət]
an insulator carrying a permanent charge similar to a permanent magnet.
References in periodicals archive ?
In air filtration, it produces meltblown filter media with an electret charge.
van Turnhout, Thermally Stimulated Discharge of Polymer Electrets, Elsevier Sci.
In this market, MEMS based microphones are expected to substitute the popular traditional electret microphones.
An alternative option of condenser microphones is an electret microphone.
01 detectors Alpha track-etch Integrated Gas 456ml detectors Electret ion chambers Integrated Gas 50ml-960ml Barasol detectors Continuous Gas 590ml Clipperton detectors Continuous Water 590ml Radon/thoron monitors Continuous Gas/water 0.
For the MERV 11 electret filter, the requested use times were one-and-a-half months and three months.
He said, "In conjunction with OptiNav imaging researchers, a phased array of 252 electret microphones was distributed over a grid of width 31 meters and length 122 meters to collect data for 3-dimensions-over-time data-set models that reconstruct the wing-tip vortices from jet aircraft.
Causality, Electromagnetic Induction, and Gravitation, 2nd Edition, Electret Scientific Company, Star City, 2000.
Most are activated charcoal-based or electret ion that measure radon levels for two to seven days.
Although it has been more than a century since the discovery and the first analysis of an electret, they are still a challenge to analyse [1], [2].
Asahi Glass supplies the electret materials (insulators that semi-permanently maintains a positive or negative charge) for the micro-vibration power generator; OMRON Corporation producces the micro-vibration power generator; Konishiyasu Co.