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615 Current news about the topic nanoparticles

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Researcher invents an easy-to-use technique to measure the hydrophobicity of micro- and nanoparticles

21-Oct-2019

The scientific and industrial communities who work with micro- and nanoparticles continue to labor with the challenge of effective particle dispersion. Most particles that disperse in liquids aggregate rapidly, and eventually precipitate, thereby separating from the liquid phase. While it is ...

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An ultrafast glimpse of the photochemistry of the atmosphere

15-Oct-2019

Researchers at Ludwig-Maximilians-Universitaet (LMU) in Munich have explored the initial consequences of the interaction of light with molecules on the surface of nanoscopic aerosols. The nanocosmos is constantly in motion. All natural processes are ultimately determined by the interplay between ...

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Determining the activity of noble-metal-free catalyst particles

08-Oct-2019

Noble-metal-free nanoparticles could serve as catalysts for the production of hydrogen from water. Because they are so small, their properties are difficult to determine. Chemists have developed a new method with which they can characterise individual noble-metal-free nanoparticle catalysts. The ...

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Converting carbon dioxide to valuable resources with the help of nanoparticles

30-Sep-2019

Enzymes use cascade reactions to produce complex molecules from comparatively simple raw materials. Researchers have now copied this principle. An international research team has used nanoparticles to convert carbon dioxide into valuable raw materials. Scientists at Ruhr-Universität Bochum in ...

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Eco-friendly method for the synthesis of iron oxide nanoparticles

Producing nanomaterials from plant extracts

17-Sep-2019

A team of scientists from Ural Federal University (Yekaterinburg), Bangladesh University of Engineering and Technology and other collaborator have published an article about a new method for the synthesis of magnetic nanoparticles. Today nanoparticles are used in various fields, from biomedicine ...

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Nanoparticles in lithium-sulphur batteries detected with neutron experiment

09-Sep-2019

An HZB team has for the first time precisely analysed how nanoparticles of lithium sulphide and sulphur precipitate onto battery electrodes during the course of the charging cycle. The results can help increase the service life of lithium-sulphur batteries. Lithium-sulphur batteries are regarded ...

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Laser-based ultrasound approach provides new direction for nondestructive testing

09-Sep-2019

Many industrial buildings, including nuclear power plants and chemical plants, rely on ultrasound instruments that continually monitor the structural integrity of their systems without damaging or altering their features. One new technique draws on laser technology and candle soot to generate ...

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Color-changing artificial 'chameleon skin' powered by nanomachines

23-Aug-2019

Researchers have developed artificial 'chameleon skin' that changes colour when exposed to light and could be used in applications such as active camouflage and large-scale dynamic displays. The material, developed by researchers from the University of Cambridge, is made of tiny particles of gold ...

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Actively Swimming Gold Nanoparticles

Chemotactic movement on the macroscale by a swarm of bacteria-mimicking nanoswimmers

07-Aug-2019

Bacteria can actively move towards a nutrient source—a phenomenon known as chemotaxis—and they can move collectively in a process known as swarming. Chinese scientists have redesigned collective chemotaxis by creating artificial model nanoswimmers from chemically and biochemically modified gold ...

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Production of catalyst in one single step

Patent pending for process

17-Jul-2019

Not much is possible without catalysts: More than 80% of all chemically manufactured products undergo a catalytic step during their production. The active material is usually platinum or another precious metal, so production is correspondingly expensive and requires several steps. Physicists at ...

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