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99 Current news about the topic nanocrystals

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A new theory for Semiconductors made of nanocrystals

First theoretical explanation how electrical current moves through a thin film of nanocrystals

30-Jun-2020

Researchers at ETH have provided the first theoretical explanation for how electrical current is conducted in semiconductors made of nanocrystals. In the future, this could lead to the development of new sensors, lasers or LEDs for TV screens. A few years ago, we were introduced to TV screens ...

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Spontaneous formation of nanoscale hollow structures could boost battery storage

16-Jun-2020

An unexpected property of nanometer-scale antimony crystals -- the spontaneous formation of hollow structures -- could help give the next generation of lithium ion batteries higher energy density without reducing battery lifetime. The reversibly hollowing structures could allow lithium ion ...

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Nanoscience breakthrough: Probing particles smaller than a billionth of a meter

17-Dec-2019

Scientists at Tokyo Institute of Technology (Tokyo Tech) developed a new methodology that allows researchers to assess the chemical composition and structure of metallic particles with a diameter of only 0.5 to 2 nm. This breakthrough in analytical techniques will enable the development and ...

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Adding a porous envelope to aluminum plasmonics

Gas-trapping framework married to light-powered nanocatalysts

13-Feb-2019

When Rice University chemist and engineer Hossein Robatjazi set out to marry a molecular sieve called MOF to a plasmonic aluminum nanoparticle two years ago, he never imagined the key would be the same process nature uses to petrify wood. In a new paper Robatjazi and co-authors with Rice's ...

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Powerful X-ray beams unlock secrets of nanoscale crystal formation

Technique allowed continuous study of cobalt nanoparticles as they grew

09-Jan-2019

High-energy X-ray beams and a clever experimental setup allowed researchers to watch a high-pressure, high-temperature chemical reaction to determine for the first time what controls formation of two different nanoscale crystalline structures in the metal cobalt. The technique allowed continuous ...

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How to produce fluorescent nanoparticles for medical applications in a nuclear reactor

12-Nov-2018

Under the leadership of Petr Cígler from the Institute of Organic Chemistry and Biochemistry (IOCB Prague) and Martin Hrubý from the Institute of Macromolecular Chemistry (IMC), both of which are part of the Czech Academy of Sciences, a team of researchers has developed a revolutionary method for ...

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A burst of ”synchronous” light

Sandwich structure of nanocrystals as quantum light source

09-Nov-2018

Excited photo-emitters can cooperate and radiate simultaneously, a phenomenon called superfluorescence. Researchers from Empa and ETH Zurich, together with colleagues from IBM Research Zurich, have recently been able to create this effect with long-range ordered nanocrystal superlattices. This ...

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Nanodiamonds as photocatalysts

22-Oct-2018

Diamond nanomaterials are considered hot candidates for low-cost photocatalysts. They can be activated by light and can then accelerate certain reactions between water and CO2 and produce carbon-neutral "solar fuels". The EU project DIACAT has now doped such diamond materials with boron and shown ...

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Connecting the (Nano)dots

Big-picture thinking can advance nanoparticle manufacturing

24-Aug-2018

Nanoparticle manufacturing, the production of material units less than 100 nanometers in size (100,000 times smaller than a marble), is proving the adage that “good things come in small packages.” Today’s engineered nanoparticles are integral components of everything from the quantum dot ...

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Squeezing nanocrystals in a liquid droplet into a solid-like state and back again

13-Aug-2018

A team led by scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) found a way to make a liquid-like state behave more like a solid, and then to reverse the process. They put a droplet of a liquid containing iron oxide nanocrystals into an oily liquid ...

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