Robotics
Humans have always been fascinated by scales different than theirs, from giant objects such as stars, planets and galaxies, to the world of the tiny: insects, bacteria, viruses and other microscopic objects. While the microscope ...
Nov 10, 2022
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Energy & Green Tech
Arid and surrounded by the salt waters of the Persian Gulf, World Cup host Qatar is among the world's most water-stressed countries. The nation of 2.9 million people has no rivers, and receives less than four inches (10 centimeters) ...
Nov 10, 2022
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10
Energy & Green Tech
An increase in the efficiency of solar panels may be on the horizon, as research from The Australian National University (ANU) reduces their current limitations.
Nov 3, 2022
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Engineering
In additive manufacturing (AM), metal parts are commonly 3D-printed using a fabrication technique called "laser powder bed fusion" (LPBF). LPBF involves repeated rapid metal powder melting and solidification using a laser ...
Nov 1, 2022
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Engineering
Wearable devices have garnered attention for their potential as sensors that could monitor various biomarkers, a means of drug delivery, medical devices and more. In order for these wearable devices to be functional and practical, ...
Oct 31, 2022
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55
Energy & Green Tech
A team of researchers has discovered a new mechanism to stabilize the lithium metal electrode and electrolyte in lithium metal batteries. This new mechanism, which does not depend on the traditional kinetic approach, has ...
Oct 27, 2022
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17
Energy & Green Tech
Despite their popular use today, lithium-ion batteries have the drawbacks of being toxic and expensive, with the added complication of a global supply shortage of the metal. For decades, researchers have tried to look for ...
Oct 27, 2022
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39
Electronics & Semiconductors
Remember iron-on decals? All you had to do was print something out on special paper with a home printer, then transfer it onto a T-shirt using an iron. Now, scientists have developed a very similar scheme, but instead of ...
Oct 26, 2022
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82
Energy & Green Tech
After nearly a century of geopolitical tension over access to oil, experts worry that the global transition to clean energy is creating new dependencies on the critical minerals needed for solar panels, wind turbines and ...
Oct 24, 2022
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6
Engineering
Sometimes, solutions to environmental problems can have environmentally unfriendly side effects. For example, while most gas-powered cars have a catalytic converter that transforms engine emission pollutants into less harmful ...
Oct 24, 2022
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51
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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