Chemistry – Page 7 – PossibleThreat Articles

A close up on the real world: Atomic migration under ambient conditions

October 8, 2019 0 Comments Chemistry, Consumer Electronics, Electricity, Engineering and Construction, Graphene, Materials Science, Physics, Spintronics

Researchers have reported an environmental transmission electron microscopy technique that has allowed in situ visualization of the atomic changes of a metal surface in an electric field under ambient conditions. The activation of oxygen gas molecules by electron tunneling was found to result in atomic migration that could be followed progressively. It is hoped that the tunneling-electron-attached-gas process will provide valuable insight for the development of nanoparticle catalyst and quantum material applications.

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Hypersonic research spotlights future flight challenges

October 8, 2019 0 Comments Automotive and Transportation, aviation, Chemistry, Inorganic Chemistry, Materials Science, Optics, Transportation Science, Vehicles

Engineers are advancing what researchers know about hypersonic flight. A new study describes a series of tests that elucidate the conditions a future aircraft may experience traveling faster than 10 times the speed of sound.

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Accidental discovery of strong and unbreakable molecular switch

October 8, 2019 0 Comments Chemistry, Engineering and Construction, Graphene, Inorganic Chemistry, Materials Science, Nanotechnology, Nature of Water, Organic Chemistry

An organic material that can repeatedly change shape without breaking would have many useful applications, such as artificial muscles, pumps or as a switch. Physicists accidentally discovered a material with that property.

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Forward or backward? New pathways for protons in water or methanol

October 8, 2019 0 Comments Biochemistry, Chemistry, Energy and Resources, Fuel Cells, Inorganic Chemistry, Nature of Water, Organic Chemistry, Physics

A collaborative ultrafast spectroscopy and ab initio molecular dynamics simulations study shows that proton vacancies in the form of hydroxide/methoxide ions are as relevant for proton transfer between acids and bases as hydrated excess protons, thus pointing for a clear demand for refinement of the microscopic picture for aqueous proton transport – in solution as well as in hydrogen fuel cells or transmembrane proteins – away from currently often assumed dominant role of hydrated excess protons.

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2019 Nobel Prize in Physics: Evolution of the universe and discovery of exoplanet orbiting solar-type star

October 8, 2019 0 Comments Astrophysics, Big Bang, Chemistry, Cosmology, Extrasolar Planets, Physics, Quantum Physics, Solar Energy

This year's Nobel Prize in Physics is being awarded "for contributions to our understanding of the evolution of the universe and Earth's place in the cosmos," with one half to James Peebles "for theoretical discoveries in physical cosmology" and the other half jointly to Michel Mayor and Didier Queloz "for the discovery of an exoplanet orbiting a solar-type star."

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A new mathematical approach to understanding zeolites

October 7, 2019 0 Comments Artificial intelligence, Chemistry, Computer Modeling, Inorganic Chemistry, Materials Science, Mathematical Modeling, Mathematics, Organic Chemistry

A system developed at MIT helps to identify zeolites that can readily transform into other zeolite forms, which are widely used as catalysts in industrial processes.

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Molecular nanocarbons with mechanical bonds

October 7, 2019 0 Comments Biochemistry, Chemistry, Graphene, Inorganic Chemistry, Materials Science, Nanotechnology, Organic Chemistry, Physics

Scientists have succeeded in synthesizing molecular nanocarbons with knots and catenanes by using a novel method in which silicon atoms are used. The epoch-making product of this research will pave the way to the development of new nanocarbon materials with complex geometric structures.

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New metasurface design can control optical fields in three dimensions

October 4, 2019 0 Comments Biochemistry, Chemistry, Civil Engineering, Construction, Engineering and Construction, Inorganic Chemistry, Nanotechnology, Optics

A team led by scientists has designed and tested a 3D-printed metamaterial that can manipulate light with nanoscale precision. Their designed optical element focuses light to discrete points in a 3D helical pattern.

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The fast dance of electron spins

October 4, 2019 0 Comments Chemistry, Computer Modeling, Computer Science, Distributed Computing, Inorganic Chemistry, Physics, Spintronics, Spintronics Research

Metal complexes show a fascinating behavior in their interactions with light, which for example is utilized in organic light emitting diodes, solar cells, quantum computers, or even in cancer therapy. In many of these applications, the electron spin, a kind of inherent rotation of the electrons, plays an important role. Researchers succeeded in simulating the extremely fast spin flip processes that are triggered by the light absorption of metal complexes.

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Determining the activity of noble-metal-free catalyst particles

October 4, 2019 0 Comments Alternative Fuels, Chemistry, Energy and Resources, Fuel Cells, Inorganic Chemistry, Nanotechnology, Nature of Water, Organic Chemistry

Chemists have developed a new method with which they can characterize individual noble-metal-free nanoparticle catalysts. The particles could be a cheap alternative to precious metal catalysts for obtaining hydrogen from water by means of electrolysis.