Engineering
Researchers at the University of Virginia School of Engineering and Applied Science have discovered a way to make a versatile thermal conductor, with promise for more energy-efficient electronic devices, green buildings and ...
Jun 21, 2022
0
54
Electronics & Semiconductors
Researchers in Sweden report that they are closing in on a way to replace batteries for wearables and low-power applications in the internet of things (IoT). The answer lies in an ink coating that enables low-grade heat, ...
Jun 15, 2022
0
89
Energy & Green Tech
There are a handful of ways to produce hydrogen fuel without emitting carbon into Earth's atmosphere. One involves using electricity to split water into hydrogen and oxygen.
Jun 6, 2022
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202
Engineering
No one would ever imagine crumpling up their smartphone, television or another electronic device. Today's displays—which are flat, rigid and fragile—lack the ability to reshape to interactively respond to users.
Mar 23, 2022
0
108
Electronics & Semiconductors
A metal foam could underpin a low-cost method for generating carbon-free fuels, researchers from KAUST have shown. The team seamlessly coated the foam with iron and cobalt nanomaterials to create a highly active electrode ...
Mar 10, 2022
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933
Electronics & Semiconductors
More precise, faster, cheaper: Researchers all over the world have been working for years on producing electrical circuits using additive processes such as robotic 3D-printing (so-called robocasting) with great success, but ...
Dec 20, 2021
0
177
Electronics & Semiconductors
Our electrical infrastructure has remained largely unchanged since World War II, but advances in technology—specifically materials—opened doors we never would have thought possible in the past. These advances have set ...
Aug 13, 2021
1
463
Engineering
A new material designed by researchers at the University of Toronto's Faculty of Applied Science & Engineering combines the flexibility of human skin with improved conductivity and tolerance of temperatures as low as -93 C.
Aug 5, 2021
0
386
Energy & Green Tech
Developing new ultrathin metal electrodes has allowed researchers to create semitransparent perovskite solar cells that are highly efficient and can be coupled with traditional silicon cells to greatly boost the performance ...
May 28, 2021
1
521
Electronics & Semiconductors
Electronic organic materials offer promise to support alternative and green energy sources to meet escalating global energy demands and strict environmental regulations. A KAUST-led team has now developed electron-transporting, ...
Mar 17, 2021
0
112
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
