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601 Current news about the topic nanoparticles

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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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Nanocoating prevents greasy smears

Anti-fingerprint surfaces

05-Jul-2019

Not only are greasy fingerprints on shiny stainless steel surfaces unattractive, they also attack the surface in question. A new nanocoating being developed by Fraunhofer researchers will in the future prevent the annoying smudges that result from fingers touching stainless steel surfaces. The ...

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Activity of fuel cell catalysts doubled

Modelling leads to the optimum size for platinum fuel cell catalysts

04-Jul-2019

An interdisciplinary research team at the Technical University of Munich (TUM) has built platinum nanoparticles for catalysis in fuel cells: The new size-optimized catalysts are twice as good as the best process commercially available today. Fuel cells may well replace batteries as the power ...

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High reaction rates even without precious metals

21-Jun-2019

Precious metals are often efficient catalysts. But they are expensive and rare. However, it has so far been difficult to determine how efficient non-precious metal alternatives are. Non-precious metal nanoparticles could one day replace expensive catalysts for hydrogen production. However, it is ...

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How to separate nanoparticles by “shape”

New strategy to separate molecules

13-Jun-2019

In our daily lives, the purpose and function of an item is defined by either its material, e.g. a rain jacket is fabricated of water-proof material, or its shape, e.g. a wheel is round to enable a rolling motion. What is the impact of the two factors on the nanoscale? The impact of material, ...

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