Electronics & Semiconductors
In the field of robotics, metals offer advantages like strength, durability, and electrical conductivity. But, they are heavy and rigid—properties that are undesirable in soft and flexible systems for wearable computing ...
Mar 11, 2021
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57
Electronics & Semiconductors
More than two-thirds of the energy used worldwide is ultimately ejected as "waste heat." Within that reservoir of discarded energy lies a great and largely untapped opportunity, claim scientists in MIT's Department of Nuclear ...
Dec 14, 2020
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43
Electronics & Semiconductors
Scientists have managed to draw at high resolution and speed, local patterns in organic semiconductor films used in optoelectronic and photonic applications. The new method enables the patterning of material characteristics ...
Jul 17, 2020
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183
Energy & Green Tech
North Carolina State University engineers have demonstrated a flexible device that harvests the heat energy from the human body to monitor health. The device surpasses all other flexible harvesters that use body heat as the ...
Jan 30, 2020
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84
Electronics & Semiconductors
How do you pack more power into an electric car?
Aug 28, 2018
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383
Engineering
Electronic devices that can not only be implanted in the human body but also completely dissolve on their own – known as "bioresorbable" electronics – are envisioned by many as one of medical technology's next frontiers. ...
May 16, 2017
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15
Energy & Green Tech
Researchers at the University of California, Riverside have created a new silicon-tin nanocomposite anode that could lead to lithium-ion batteries that can be charged and discharged more times before they reach the end of ...
Aug 3, 2016
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309
Machine learning & AI
A research team has demonstrated that analog hardware using ECRAM devices can maximize the computational performance of artificial intelligence, showcasing its potential for commercialization. Their research has been published ...
Aug 1, 2024
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30
Engineering
Thermoelectric technology, which enables the direct conversion of heat into electricity, has emerged as a promising alternative energy source. Notably, this technology can efficiently convert body heat into electrical energy, ...
Jun 12, 2024
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18
Energy & Green Tech
Oxide ion conductors used in solid-state fuel cells often fail to reach full potential when operating at temperatures below 500 oC, but researchers from Tokyo Tech have recently found a solution to this problem. They demonstrated ...
Apr 10, 2024
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10
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
