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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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A new way to gauge the growth of nanowires

21-Mar-2018

In a new study, researchers from the U.S. Department of Energy's (DOE) Argonne and Brookhaven National Laboratories observed the formation of two kinds of defects in individual nanowires, which are smaller in diameter than a human hair. These nanowires, made of indium gallium arsenide, could be ...

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Discovering new field affecting metals solidification

05-Feb-2018

A fundamental discovery that alters our current understanding of how metals solidify and form crystalline patterns may help lead to better control of casting and welding processes. It also explains how snowflakes and many mineral patterns form naturally. Reexamining data from his 20-year-old NASA ...

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Searching for answers on the sea floor

How abiotic organic molecules are formed

14-Jun-2017

The sea floor may look barren, but Qi Fu, an experimental geochemist at the University of Houston, says there are places where it is teeming with life. Hydrothermal vents, fissures on the sea bottom which release fluids heated by volcanic rocks, are particularly rich, but science can't yet ...

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Graphene-nanotube hybrid boosts lithium metal batteries

22-May-2017

Rice University scientists have created a rechargeable lithium metal battery with three times the capacity of commercial lithium-ion batteries by resolving something that has long stumped researchers: the dendrite problem. The Rice battery stores lithium in a unique anode, a seamless hybrid of ...

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Utilizing tumor suppressor proteins to shape nanomaterials

05-May-2017

A new method combining tumor suppressor protein p53 and biomineralization peptide BMPep successfully created hexagonal silver nanoplates, suggesting an efficient strategy for controlling the nanostructure of inorganic materials. Precise control of nanostructures is a key factor to form functional ...

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Crystal mysteries spiral deeper

11-Oct-2013

New York University chemists have discovered crystal growth complexities, which at first glance appeared to confound 50 years of theory and deepened the mystery of how organic crystals form. But, appearances can be deceiving. Their findings, which appear in Proceedings of the National Academy of ...

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Multifunctional 3D shape-memory materials

17-Sep-2013

Chinese scientists have found a simple way to produce multifunctional 3D materials by developing a polymer scaffold that ‘remembers’ its shape and can be used as a host for functional nanoparticles. The shape-memory polymer scaffold can host a wide range of functional nanoparticles, enabling the ...

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When boron butts in

Bridging N–N ligand borylation in group 4 metallocene complexes

16-Apr-2013

For Nature and chemists alike, making atmospheric nitrogen available for the formation of more complex nitrogen compounds is both essential and difficult. Paul Chirik and Scott Semproni at Princeton University, USA, report the first examples of the use of group 4 metallocene complexes for ...

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Bonn physicists create a 'super-photon'

Completely new source of light for many applications

30-Nov-2010

Physicists from the University of Bonn have developed a completely new source of light, a so-called Bose-Einstein condensate consisting of photons. Until recently, expert had thought this impossible. This method may potentially be suitable for designing novel light sources resembling lasers that ...

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