News tagged with electrical conductivity

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The right dose for oncology

EPFL researchers develop a tool for oncologists using the electrical signature of cancer cells to get just the right treatment dosage for each patient.

Mar 04, 2013
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Atomic nano-switches emulate human memory

In a breakthrough, researchers at the International Center for Materials Nanoarchitectonics (MANA, Japan) demonstrate for the first time the key features in the neuroscience and psychology of memory by a AgS2 synapse.

Sep 15, 2011
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Electrical conductivity

Electrical conductivity or specific conductance is a measure of a material's ability to conduct an electric current. When an electrical potential difference is placed across a conductor, its movable charges flow, giving rise to an electric current. The conductivity σ is defined as the ratio of the current density to the electric field strength :

It is also possible to have materials in which the conductivity is anisotropic, in which case σ is a 3×3 matrix (or more technically a rank-2 tensor) which is generally symmetric.

Conductivity is the reciprocal (inverse) of electrical resistivity, ρ, and has the SI units of siemens per metre (S·m-1):

Electrical conductivity is commonly represented by the Greek letter σ, but κ (esp. in electrical engineering science) or γ are also occasionally used.

An EC meter is normally used to measure conductivity in a solution.

This text uses material from Wikipedia, licensed under CC BY-SA

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