Engineering
When Zach Post was approached about leading a study to develop a framework for additively manufacturing (colloquially called 3D printing) a new space instrument for detecting air pollution, it was an opportunity he couldn't ...
Mar 22, 2024
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Engineering
Nations around the world are rapidly developing high-energy laser weapons for military missions on land and sea, and in the air and space. Visions of swarms of small, inexpensive drones filling the skies or skimming across ...
Mar 8, 2024
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11
Engineering
Composite materials such as carbon fiber-reinforced plastics (CFRP) are excellent for lightweight construction and are used, among other things, in automotive and aircraft construction.
Feb 29, 2024
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4
Engineering
A 3D printed 'metamaterial' boasting levels of strength for weight not normally seen in nature or manufacturing could change how we make everything from medical implants to aircraft or rocket parts.
Feb 26, 2024
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129
Engineering
SnO2 has been widely used as electron transport layers (ETLs) for efficient perovskite solar cells (PSCs) due to its high transparency, high electron mobility, and favorable band alignment. PSCs based on chemical bath deposition ...
Feb 21, 2024
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Engineering
Gotham City's Dark Knight boasts an impressive collection of technological marvels, but the superhero scientists at the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL) have cutting-edge capabilities ...
Feb 14, 2024
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Engineering
High-purity semiconductor crystals are required for power electronics in electric cars or in photovoltaics. When such crystals reach a diameter of 2 inches, they become relevant for industrial applications.
Feb 9, 2024
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31
Engineering
A single burst of light is precisely aimed at a tiny drone flying at breakneck speed far in the distance. Instants later, the deactivated drone crashes into the sea. Not a sound made, no human casualties, no messy explosions. ...
Jan 23, 2024
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Engineering
With the rapid development of semiconductor technologies, diamond emerges as a leading contender in reshaping the modern industry with its remarkable properties. However, the machining of diamond material is very difficult.
Dec 21, 2023
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3
Engineering
Steel and aluminum are key players in supporting economic growth, yet materials joining them remain unexplored due to their fusion zones' brittleness. A new 3D printing method's fix may be a step toward a steel-aluminum hybrid ...
Nov 14, 2023
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A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.
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