Energy & Green Tech
For decades, researchers have assumed that the inevitable filmy buildup on electrodes inside rechargeable batteries is the driver of performance loss. Now, we know that view is backward.
Sep 28, 2023
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166
Energy & Green Tech
Proton exchange membrane fuel cells (PEMFCs) hold promise as a replacement for fossil fueled engines in heavy-duty vehicles. Reducing the platinum content in catalysts is pivotal for scaling up in such applications. Yet, ...
Sep 22, 2023
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Energy & Green Tech
A research team led by Prof. Yan Lifeng from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) has designed a water-based nanomicellar electrolyte by using methylurea (Mu). ...
Sep 18, 2023
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113
Electronics & Semiconductors
Relaxor ferroelectrics are materials with ferroelectric properties and high electrostriction (i.e., the ability to contract or deform in response to electric fields). These materials can be used to create highly efficient ...
Engineering
Composites are widely used in different industries due to their ultra-high specific strength and specific modulus. Natural fibers can be considered as adequate alternatives to synthetic fibers due to advantages such as a ...
May 23, 2023
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40
Engineering
Scrap aluminum can now be collected and transformed directly into new vehicle parts using an innovative process being developed by the automotive industry, in particular for electric vehicles. Today, the Department of Energy's ...
Apr 18, 2023
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50
Energy & Green Tech
A research team led by Prof. Ma Cheng from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) revealed that the large resistance in Li-ion-conducting electrolyte is not caused ...
Apr 12, 2023
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16
Engineering
Many birds' feathers are remarkably efficient at shedding water—so much so that "like water off a duck's back" is a common expression. Much more unusual are the belly feathers of the sandgrouse, especially Namaqua sandgrouse, ...
Apr 12, 2023
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Engineering
One of the many ways to reduce the energy required for transportation is to make vehicles lighter. High-strength (HS) steel is perfect candidate materials for this purpose, as its higher weight-to-strength ratio allows for ...
Mar 29, 2023
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13
Electronics & Semiconductors
When you think of how to make electronic components, water probably doesn't top your list of raw materials. Nevertheless, in a study recently published in Journal of Water Chemistry and Technology, researchers from the University ...
Mar 28, 2023
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158
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
