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651 Current news about the topic nanoparticles

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Nanoplastics – an underestimated problem?

Tiny plastic particles in the environment

06-May-2021

The images leave no one cold: giant vortices of floating plastic trash in the world's oceans with sometimes devastating consequences for their inhabitants – the sobering legacy of our modern lifestyle. Weathering and degradation processes produce countless tiny particles that can now be detected ...

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Researchers analyzed circulating currents inside gold nanoparticles

A new method facilitates accurate analysis of magnetic field effects inside complex nanostructures

04-May-2021

Researchers in the Nanoscience Center of University of Jyvaskyla, in Finland and in the Guadalajara University in Mexico developed a method that allows for simulation and visualization of magnetic-field-induced electron currents inside gold nanoparticles. The method facilitates accurate analysis ...

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Energy transmission by gold nanoparticles coupled to DNA structures

Using DNA structures as scaffolds, Tim Liedl has shown that precisely positioned gold nanoparticles can serve as efficient energy transmitters

09-Apr-2021

Since the inception of the field in 2006, laboratories around the world have been exploring the use of ‘DNA origami’ for the assembly of complex nanostructures. The method is based on DNA strands with defined sequences that interact via localized base pairing. “With the aid of short strands with ...

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Hot electrons send CO2 back to the future

Catalyst nanoparticles trap an unprecedented range of wavelengths of light to convert carbon dioxide into methane.

05-Mar-2021

Atmospheric carbon dioxide (CO2) is a major driver of global warming, but this gas could also serve as a valuable resource. Researchers at KAUST have developed an efficient catalyst that uses light energy to convert CO2 and hydrogen into methane (CH4). This counteracts the release of CO2 when ...

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On the line: Watching nanoparticles get in shape

New method could advance next-generation applications in medicine, cosmetics, and petroleum recovery

26-Feb-2021

Liquid structures - liquid droplets that maintain a specific shape - are useful for a variety of applications, from food processing to cosmetics, medicine, and even petroleum extraction, but researchers have yet to tap into these exciting new materials' full potential because not much is known ...

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Producing more sustainable hydrogen with composite polymer dots

16-Feb-2021

Hydrogen for energy use can be extracted in an environmentally friendly way from water and sunlight, using photocatalytic composite polymer nanoparticles developed by researchers at Uppsala University. In laboratory tests, these "polymer dots" showed promising performance and stability alike. How ...

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Nanoparticle gel unites oil and water in manufacturing-friendly approach

Novel gel-creation method could open applications in water filtration, other applications

15-Feb-2021

Oil and water may not mix, but adding the right nanoparticles to the recipe can convert these two immiscible fluids into an exotic gel with uses ranging from batteries to water filters to tint-changing smart windows. A new approach to creating this unusual class of soft materials could carry them ...

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Researchers produce special nanoparticles and reveal their inner structure for the first time

New single-chain nanoparticles could be used in medicine or as nanoreactors in which chemical reactions take place

12-Feb-2021

Tiny nanoparticles can be furnished with dyes and could be used for new imaging techniques, as chemists and physicists at Martin Luther University Halle-Wittenberg (MLU) show in a recent study. The researchers have also been the first to fully determine the particles' internal structure. Their ...

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New synthetic route for biofuel production

Compared to previous methods, the team has achieved a high yield and selectivity under less aggressive reaction conditions

09-Feb-2021

A German-Chinese research team has found a new synthetic route to produce biofuel from biomass. The chemists converted the substance 5-hydroxymethylfurfural (HMF) produced from biomass into 2,5-dimethylfuran (DMF), which could be suitable as a biofuel. Compared to previous methods, they achieved ...

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New technique builds super-hard metals from nanoparticles

26-Jan-2021

Metallurgists have all kinds of ways to make a chunk of metal harder. They can bend it, twist it, run it between two rollers or pound it with a hammer. These methods work by breaking up the metal's grain structure -- the microscopic crystalline domains that form a bulk piece of metal. Smaller ...

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