Engineering
The research team led by Professor Jong-Sung Yu of the Department of Energy Science and Engineering at DGIST has developed a low-temperature method to synthesize a highly graphitized carbon support that will greatly improve ...
Mar 31, 2023
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42
Engineering
NIMS has developed low-temperature-catalyzed, solution-processed SiO2 (LCSS), which subsequently enabled printing of high-performance thin-film transistors (TFTs) and three-dimensional circuits connecting various elements. ...
Jun 23, 2021
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2
Engineering
Due to its zero carbon, safe storage, and high energy density, liquid ammonia is a promising marine fuel in the shipping industry.
May 6, 2022
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22
Energy & Green Tech
Researchers from Germany, Italy, and the UK have achieved a major advance in the development of materials suitable for on-chip energy harvesting. By composing an alloy made of silicon, germanium and tin, they were able to ...
Jul 8, 2024
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103
Engineering
A research team, jointly led by Professor Seok Ju Kang and Professor Hyun-Wook Lee in the School of Energy and Chemical Engineering at UNIST, has successfully developed a novel binder technology that promises to revolutionize ...
Dec 14, 2023
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3
Energy & Green Tech
Researchers at Swansea University, in collaboration with Wuhan University of Technology, Shenzhen University, have developed a pioneering technique for producing large-scale graphene current collectors.
Aug 29, 2024
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64
Electronics & Semiconductors
A KAIST research team has developed a graphene-inorganic-hybrid micro-supercapacitor made of leaves using femtosecond direct laser writing lithography. The advancement of wearable electronic devices is synonymous with innovations ...
Jan 27, 2022
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8
Engineering
PVC window frames rely on a metal scaffold for stability. But what if another strong material with lower heat conductivity was used in place of the metal? This would improve the overall thermal insulation of the window and ...
Oct 12, 2023
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1
Energy & Green Tech
When purchasing a smartphone, one of your primary considerations is typically finding a durable case and a screen protector to safeguard the device from external harm. Similarly, a group of researchers from POSTECH has recently ...
Nov 16, 2023
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21
Energy & Green Tech
According to a study published in Renewables, a research team led by Prof. Hu Linhua from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has improved the performance of metal ion batteries by ...
Jul 28, 2023
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1
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
