Energy & Green Tech
In times when energy is scarce and sustainable ways of energy production are being explored, thermoelectric materials are being considered for power generation to transform waste heat into electricity. However, to make this ...
Mar 9, 2023
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35
Hardware
As the evolution of standard microchips is coming to an end, scientists are looking for a revolution. The big challenges are to design chips that are more energy efficient and to design devices that combine memory and logic ...
Mar 7, 2023
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101
Engineering
It started with a mystery: How did molten salt breach its metal container? Understanding the behavior of molten salt, a proposed coolant for next-generation nuclear reactors and fusion power, is a question of critical safety ...
Feb 23, 2023
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165
Engineering
Cars, buildings, infrastructure—all are unimaginable without steels. While metallic materials have been known and manufactured for more than 5,000 years, there is permanent need for further property improvement, especially ...
Jan 17, 2023
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120
Energy & Green Tech
Nickel-rich layered cathodes are promising candidates for the next-generation high-energy lithium-ion batteries because of their high energy density and competitive cost. However, with long-term operation, these cathodes ...
Jan 5, 2023
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2
Engineering
To design better rechargeable ion batteries, engineers and chemists from the University of Illinois Urbana-Champaign collaborated to combine a powerful new electron microscopy technique and data mining to visually pinpoint ...
Nov 10, 2022
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110
Energy & Green Tech
Electric vehicles, powered by renewable energy instead of finite fossil fuels, are the best green choice—but they could be more sustainable. As the most common power source in electric vehicles and portable electronics, ...
Oct 27, 2022
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8
Energy & Green Tech
Researchers at the University of California, Irvine and four national laboratories have devised a way to make lithium-ion battery cathodes without using cobalt, a mineral plagued by price volatility and geopolitical complications.
Sep 21, 2022
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790
Energy & Green Tech
Seeing is believing—or, rather, seeing can aid in understanding, especially when it comes to the mechanisms underpinning lithium-ion batteries. Despite near-ubiquitous use in cell phones, computers and more, the complex ...
Sep 16, 2022
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13
Energy & Green Tech
As industries across the country begin the transition to renewable energy, the demand for batteries, and therefore lithium, is projected to rise dramatically. But, with much of the global lithium supply located outside of ...
Aug 17, 2022
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99
An electron microscope is a type of microscope that uses a particle beam of electrons to illuminate a specimen and create a highly-magnified image. Electron microscopes have much greater resolving power than light microscopes that use electromagnetic radiation and can obtain much higher magnifications of up to 2 million times, while the best light microscopes are limited to magnifications of 2000 times. Both electron and light microscopes have resolution limitations, imposed by the wavelength of the radiation they use. The greater resolution and magnification of the electron microscope is because the wavelength of an electron; its de Broglie wavelength is much smaller than that of a photon of visible light.
The electron microscope uses electrostatic and electromagnetic lenses in forming the image by controlling the electron beam to focus it at a specific plane relative to the specimen. This manner is similar to how a light microscope uses glass lenses to focus light on or through a specimen to form an image.
This text uses material from Wikipedia, licensed under CC BY-SA
