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Search results for X-ray diffraction

Nanomaterials Oct 22, 2020

Oxygen can do a favor to synthesize metal-organic frameworks

Metal-organic frameworks, or MOFs, are composed of metal ions periodically surrounded by organic bridging molecules, and these hybrid crystalline frameworks feature a cage-like hollow structure. This unique structure motif ...

Materials Science Oct 22, 2020

What a crystal reveals about nuclear materials processing

While studying legacy contaminated soil samples from the Plutonium Finishing Plant waste crib at the Hanford Site (Richland, WA), Pacific Northwest National Laboratory (PNNL) researchers located and extracted tiny crystals ...

Materials Science Oct 15, 2020

Predicting the distortion and performance of parts made by additive manufacturing

Studies of the residual stresses that are formed during an additive manufacturing (AM) process have revealed that the build orientation of the part being produced has an impact on the formation of adverse stresses.

Nanophysics Sep 21, 2020

High-sensitivity nanoscale chemical imaging with hard x-ray nano-XANES

X-rays with excellent penetration power and high chemical sensitivity are suited to understand heterogeneous materials. In a new report on Science Advances, A. Pattammattel, and a team of scientists at the National Synchrotron ...

General Âé¶¹ÒùÔºics Sep 21, 2020

Self-induced ultrafast demagnetization limits amount of light diffracted from magnetic samples at soft x-ray energies

Free electron X-ray lasers deliver intense, ultrashort pulses of X-rays, which can be used to image nanometer-scale objects in a single shot. When the X-ray wavelength is tuned to an electronic resonance, magnetization patterns ...

General Âé¶¹ÒùÔºics Sep 8, 2020

Kondo physics in antiferromagnetic Weyl semimetal films

Emerging quantum materials can be defined by topology and strong electron correlations, although their applications in experimental systems are relatively limited. Weyl semimetals incorporating magnetism offer a unique and ...

Earth Sciences Sep 3, 2020

Wildfires produce minerals that freeze clouds

Certain particles in the atmosphere have the unique ability to change the properties of clouds by causing water droplets to freeze at higher temperatures than they would on their own. With this ability, these so-called ice ...

Materials Science Aug 25, 2020

Scientists get atomistic picture of platinum catalyst degradation

Degradation of platinum, used as a key electrode material in the hydrogen economy, severely shortens the lifetime of electrochemical energy conversion devices, such as fuel cells. For the first time, scientists elucidated ...

Condensed Matter Aug 21, 2020

Metal organic framework (MOF) microcrystals for multicolor broadband lasing

Multicolor single-mode polarized microlasers containing an output range from visible light to the near-infrared have significant applications in photonic integration and multimodal chemical sensing or imaging applications. ...

Biochemistry Aug 6, 2020

Poison control: Chasing the antidote

Pick your poison. It can be deadly for good reasons such as protecting crops from harmful insects or fighting parasite infection as medicine—or for evil as a weapon for bioterrorism. Or, in extremely diluted amounts, it ...

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