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79 Current news about the topic transmission electron microscopy

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Noble metal-free catalyst system as active as platinum

Affordable high-performance catalysts have come within reach

25-Oct-2018

The industry has been traditionally deploying platinum alloys as catalysts for oxygen reduction, which is for example essential in fuel cells or metal-air batteries. Expensive and rare, that metal imposes strict restrictions on manufacture. Researchers at Ruhr-Universität Bochum (RUB) and ...

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Key mysteries of spider silk unraveled

25-Oct-2018

Scientists at ASU are celebrating their recent success on the path to understanding what makes the fiber that spiders spin - weight for weight - at least five times as strong as steel. One of the fundamental mysteries of spider silk which has limited scientists' ability to produce artificial ...

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New Competition for MOFs: Scientists Make Stronger COFs

Researchers find a way to better 'weld' covalent organic frameworks together

06-Aug-2018

Hollow molecular structures known as COFs (covalent organic frameworks), which could serve as selective filters or containers for other substances and have many other potential uses, also tend to suffer from an inherent problem: It's difficult to keep a network of COFs connected in harsh chemical ...

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Rice U. sleuths find metal in 'metal-free' catalysts

28-Feb-2018

Detective work by Rice University chemists has defined a deception in graphene catalysts that, until now, has defied description. Graphene has been widely tested as a replacement for expensive platinum in applications like fuel cells, where the material catalyzes the oxygen reduction reaction ...

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Crystal clear

22-Jan-2018

Staff members at King Abdullah University of Science and Technology (KAUST) devised a methodology for the procurement of atomically resolved images of beam-sensitive materials using transmission electron microscopy. Daliang Zhang, Rachid Sougrat and Kun Li from the KAUST Core Laboratories, in ...

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Surprising discovery could lead to better batteries

16-Jan-2018

A collaboration led by scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory has observed an unexpected phenomenon in lithium-ion batteries--the most common type of battery used to power cell phones and electric cars. As a model battery generated electric current, the ...

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Enhancing the quantum sensing capabilities of diamond

24-Nov-2017

Researchers have discovered that dense ensembles of quantum spins can be created in diamond with high resolution using an electron microscopes, paving the way for enhanced sensors and resources for quantum technologies. Diamonds are made of carbon atoms in a crystalline structure, but if a carbon ...

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Scientists capture colliding organic nanoparticles on video for first time

20-Nov-2017

A Northwestern University research team is the first to capture on video organic nanoparticles colliding and fusing together. This unprecedented view of "chemistry in motion" will aid Northwestern nanoscientists developing new drug delivery methods as well as demonstrate to researchers around the ...

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Promising sensors for submarines, mines and spacecraft

14-Nov-2017

Researchers from the Physics Department of Moscow State University and their colleagues have discovered a mechanism that allows gas sensors, based on nanocrystalline metal oxides, to work at room temperature. This invention will raise the efficiency of environmental monitoring at nuclear power ...

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Simple green synthesis is a breath of fresh air

07-Nov-2017

Nanoparticles of controllable composition and size have great potential in electrical, optical and chemical devices, but they must be created in a safe and cost-effective way. Kazuhiro Takanabe and coworkers from KAUST now report a simple method for synthesizing metal-sulfide nanoparticles at low ...

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