Electronics & Semiconductors
In the future, climate-neutral hydrogen will play an important role as a fuel and raw material. Hydrogen is produced by electrolysis of water, either using an indirect approach in which an external energy source (solar panel ...
Jul 13, 2023
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Electronics & Semiconductors
Computers, despite all their apparent complexity, are basically just a large number of electronic switches, flicking on and off in the right order to process digital information. Semiconductor technology has made these switches ...
Jul 10, 2023
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216
Engineering
University of California Berkeley researchers have designed an extreme-weather proven, hand-held device that can extract and convert water molecules from the air into drinkable water using only ambient sunlight as its energy ...
Jul 7, 2023
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Energy & Green Tech
Gisele Azimi is bringing battery recycling to a new level, using captured carbon dioxide to harvest the precious metals used for green technologies. Azimi, a University of Toronto professor and the Canada Research Chair for ...
Jul 6, 2023
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23
Engineering
Fraunhofer researchers have developed an extremely heat-resistant ceramic-based ink. For the first time, this enables metal components processed in the automotive industry at temperatures over 1,000ºC to be marked with a ...
Jul 3, 2023
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Energy & Green Tech
An ingredient in many toothpastes is sodium fluoride, a compound of fluorine. It is added to protect teeth against decay. But compounds containing fluorine have other practical uses that might surprise you. Scientists at ...
Jun 28, 2023
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54
Energy & Green Tech
Rechargeable batteries store electricity in their electrode materials, while redox flow batteries use chemicals stored in tanks attached to the electrodes. Researchers have now developed a battery system based on a hybrid ...
Jun 26, 2023
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94
Energy & Green Tech
A thin layer of gold or silver helps improve the efficiency of perovskite solar cells, but researchers have found a less expensive material that will enable commercialization of the technology without exorbitant cost.
Jun 22, 2023
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74
Engineering
Taking a cue from the structural complexity of trees and bones, Washington State University engineers have created a way to 3D-print two types of steel in the same circular layer using two welding machines. The resulting ...
Jun 22, 2023
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200
Engineering
Engineers in Melbourne have developed a cost-effective and environmentally friendly way to remove heavy metals, including copper and zinc, from biosolids.
Jun 21, 2023
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In chemistry, a metal (Greek: Metallo, Μέταλλο) is an element, compound, or alloy characterized by high electrical conductivity. In a metal, atoms readily lose electrons to form positive ions (cations); those ions are surrounded by delocalized electrons, which are responsible for the conductivity. The thus produced solid is held by electrostatic interactions between the ions and the electron cloud, which are called metallic bonds.
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