Sentences with phrase «electrical resistivity»
Electrical resistivity refers to how much a material resists the flow of electrical current through it. It measures the resistance a substance has to the passage of electricity. A high resistivity means the material is a poor conductor, while a low resistivity means it is a good conductor. Full definition
«The strain sensitivity and electrical resistivity of our composite film is readily tuned by changing the composition ratio of the carbon nanotubes and the silver nanoparticles,» Javey says.
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V K - 1 at low temperature, while maintaining low electrical resistivity (right upper).
Folarin Kolawole of Oklahoma State University and colleagues have made the first comprehensive observations of those features with a «CAT scan» - style technology called high resolution electrical resistivity tomography (ERT).
Shabtaie, S., and C.R. Bentley, Electrical resistivity measurements on Ice Stream B, Annals of Glaciology 20 1994.
Data from a 1970s international research effort to explore the subsurface of the region, called the Dry Valleys Drilling Project, found tantalizing geophysical evidence — seismic and electrical resistivity data — that hinted at liquid water deep below.
The microclimate has been recorded with various wireless monitoring systems, including the use of balloons to elevate the sensors, together with infrared thermography, hygrometry and electrical resistivity devices to measure the two critical parameters for conservation: temperature and humidity.
Based on electrical resistivity tests, the structure continues for several metres.
Shabtaie, S., and C.R. Bentley, Investigation of bottom mass balance rates by electrical resistivity soundings on the Ross Ice Shelf, Antarctica, Journal of Glaciology, Vol.
For example, Dafflon et al. [2017] demonstrated in a polygonal tundra how soil electrical resistivity tomography and vegetation activity cameras can be merged with in situ measurements in a way to corroborate the role of active layer thickness and polygon geometry on spatial control on productivity, and demonstrate how changes in solute concentration and unfrozen water content in winter contributes to acceleration of permafrost thaw.
«These crystals produced very high thermoelectric powers over a wide temperature range, from the cryogenic level of 50 K (which is around -223 °C) up to room temperature, but still maintained the low electrical resistivity that is needed for practical cooling applications.»
Bentley, C.R., Electrical resistivity measurements on the Ross Ice Shelf, Journal of Glaciology, Vol.
«In fact,» Prof. Lugli explains, «the electrical resistivity of such films can be modulated by either an applied voltage (to provide a transistor action) or by the adsorption of gas molecules, which in turn is a signature of the gas concentration for sensor applications.»
English Heritage, which is responsible for maintaining Stonehenge, is carrying out a study of the electrical resistivity of the earth around the site.
«The great properties of nanodiamond — lubricity, high thermal conductivity and electrical resistivity and stability, among others — are quite impressive,» said Taha - Tijerina.
Various material properties were measured for the samples, including thermoelectric power, electrical resistivity, and thermal conductivity, to compare the effects of the two dopants on their thermoelectric characteristics.
The material that Wang and his team created restores all properties needed for use as a dielectric in wearable electronics — mechanical strength, breakdown strength to protect against surges, electrical resistivity, thermal conductivity and dielectric, or insulating, properties.
For example, if a dielectric material retains its electrical resistivity after self - healing but not its thermal conductivity, that could put electronics at risk of overheating.
As its electrical resistivity drops to zero, it floats within the ring.