active layer


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active layer

[′ak·tiv ′lā·ər]
(geology)
That part of the soil which is within the suprapermafrost layer and which usually freezes in winter and thaws in summer. Also known as frost zone.
References in periodicals archive ?
To increase the response speed of the bilayer, we had to develop a novel way to fabricate the active layer.
It is a follow-on to the Active Layer Theatre Ballistic Missile Defence contract.
Using these derivatives the Merck KGaA, Darmstadt, Germany, team developed active layer formulations ready for deposition deploying a range of industrial coating techniques.
The ability of organic semiconducting molecules (donor/acceptor mixture) to function as the active layer in a polymer solar cell has been widely acknowledged [l].
The highest volume production MEMS using TSV Technology based on AlN piezoelectric active layer
His topics include basic diode laser engineering principles; optical strength engineering; a diode laser reliability engineering program; and novel diagnostic laser data for active layer material integrity, impurity trapping effects, and mirror temperatures.
The current decrease may be because this comet is coming close to the Sun for the first time, and a 'volatile frosting' of ice may be coming off revealing a less active layer beneath.
Experts from the University of Sheffield's Department of Physics and Astronomy and the University of Cambridge have created a method of spray-coating a photovoltaic active layer by an air-based process--similar to spraying--regular paint from a can--to develop a cheaper technique which can be mass produced.
Permafrost consists of an active layer of up to two metres in thickness, which thaws each summer and refreezes each winter, and the permanently frozen soil beneath.
The bottom layer and the active layer, where combinations of electrons and positively charged ions interact to create an electrical current, are composed of abundant organic elements like carbon, oxygen, and copper, Gleason said.
In the present experiments, two of the membranes used have an active layer on a support layer, while the one with [d.
The EnviroStepao carpet cushion from Carpenter was launched earlier this year and is made using DuPontao Active Layer RS moisture barrier film, which is laminated to the top surface of the cushion to prevent spills or liquids from soaking in.

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