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
Energy & Green Tech
The all-solid-state battery is a secondary battery with a solid electrolyte between the anode and cathode. It is considered a representative of next-generation battery technology due to its high energy density and significantly ...
Mar 28, 2023
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147
Electronics & Semiconductors
Transparent conductors are essential for many devices, such as touch screens and solar cells. Copper iodide (CuI) can conduct electricity while staying see-through but is not as good as some other materials. Researchers from ...
Nov 2, 2023
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44
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
Engineering
Most people do not give the U.S. electric grid a second thought—we flip a switch, and the lights come on. Behind the scenes are thousands of power plants and utilities linked by millions of miles of transmission lines. ...
Apr 16, 2024
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57
Electronics & Semiconductors
Korea Institute of Machinery & Materials (KIMM) has announced the development of the design and process technology for the world's first battery electrode that significantly improves the performance and stability of batteries ...
Jan 27, 2023
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8
Engineering
Controlling heat flow is key to enhancing performance in a wide variety of systems. In electronic devices, such as mobile phones or any type of processor, overheating decreases their performance and reduces their lifetime. ...
Apr 11, 2024
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54
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
Engineering
Without a map, it can be just about impossible to know not just where you are, but where you're going, and that's especially true when it comes to materials properties.
Mar 29, 2024
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27
Engineering
NIMS has succeeded in enhancing the thermoelectric performance of an n-type Mg3Sb2-based material by minutely doping with copper. NIMS and AIST then constructed a module by combining this material with a high-performance ...
Jun 7, 2021
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5
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
