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News articles about "theoretical"

Light waves allow preferred bond breaking in symmetric molecules

Chemical bonds between carbon and hydrogen atoms are amongst the strongest in nature and their selective breaking in particular in symmetric molecules is of interest to chemical synthesis and the development of new biologically active ... - Read More

Nanoscale heat flow predictions: Environmentally-friendly and cost-effective nanometric-scale energy devices

Heat flow in novel nanomaterials could help in creating environmentally friendly and cost effective nanometric scale energy devices Physicists are now designing novel materials with physical properties tailored to meet specific energy consumption needs Before ... - Read More

Graphene for real-world devices: New research in phonon scattering sheds more light on graphene as a replacement for silicon

Graphene a one atom thick form of the carbon material graphite has been hailed as a wonder material strong light nearly transparent and an excellent conductor of electricity and heat But a number of practical ... - Read More

Evolution in species may reverse predator-prey population cycles

Populations of predators and their prey usually follow predictable cycles When the number of prey increases perhaps as their food supply becomes more abundant predator populations also grow When the predator population becomes too large ... - Read More

Breaking up water: Controlling molecular vibrations to produce hydrogen

Natural gas methane can be converted into hydrogen H2 which is used in clean energy synthetic fertilizers and many other chemicals The reaction requires water and a nickel catalyst Methane and water molecules attach on ... - Read More

Solving a mystery of thermoelectrics: Analysis of phase-change materials

Materials that can be used for thermoelectric devices those that turn a temperature difference into an electric voltage have been known for decades But until now there has been no good explanation for why just ... - Read More

Scientists track ripples in freestanding graphene for first time

An international team of scientists led by physicists at the University of Arkansas has tracked the dynamic movement of ripples in freestanding graphene at the atomic level This discovery advances the fundamental understanding of one ... - Read More

Flexible battery, no lithium required: Lab creates thin-film battery for portable, wearable electronics

A Rice University laboratory has flexible portable and wearable electronics in its sights with the creation of a thin film for energy storage Rice chemist James Tour and his colleagues have developed a flexible material ... - Read More

Rare-earth-like magnetic properties in iron

Scientists at the Department of Energy's Ames Laboratory have observed magnetic properties typically associated with those observed in rare earth elements in iron These properties are observed in a new iron based compound that does ... - Read More

'Double-duty' electrolyte enables new chemistry for longer-lived batteries

Researchers at the Department of Energy's Oak Ridge National Laboratory have developed a new and unconventional battery chemistry aimed at producing batteries that last longer than previously thought possible In a study published in the ... - Read More

'Double-Duty' Electrolyte Enables New Chemistry for Longer-Lived Batteries

Researchers at the Department of Energy’s Oak Ridge National Laboratory have developed a new and unconventional battery chemistry aimed at producing batteries that last longer than previously thought possible In a study published in the ... - Read More

Atomic switcheroo explains origins of thin-film solar cell mystery

Treating cadmium telluride CdTe solar cell materials with cadmium chloride improves their efficiency but researchers have not fully understood why Now an atomic scale examination of the thin film solar cells led by the Department ... - Read More

A modern twist on Young's slits

A landmark experiment on wave interference from the early 1800s is revisited using gold nanoparticles In the eighteenth century scientists faced a conundrum is light a wave or a particle One of strongest pieces of ... - Read More

It looks like rubber but isn't: What goes on in a concentrated solution of circular polymers?

The experimental and numerical study of the behaviour of polymers in concentrated solutions is a line of research that is still highly active In the past it enabled us to understand why materials like rubber ... - Read More

Bright future for protein nanoprobes

The term a brighter future might be a cliché but in the case of ultra small probes for lighting up individual proteins it is now most appropriate Researchers at the U S Department of Energy ... - Read More

More accurate data on thousands of years of climate change

Using a cutting edge research technique UCLA researchers have reconstructed the temperature history of a region that plays a major role in determining climate around the world The findings published online Feb 27 in the ... - Read More

'Ultracold' molecules promising for quantum computing, simulation

Researchers have created a new type of ultracold molecule using lasers to cool atoms nearly to absolute zero and then gluing them together a technology that might be applied to quantum computing precise sensors and ... - Read More

Graphene-metal sandwich: Combining graphene and copper may shrink electronics

Researchers have discovered that creating a graphene copper graphene sandwich strongly enhances the heat conducting properties of copper a discovery that could further help in the downscaling of electronics The work was led by Alexander ... - Read More

Atomically thick metal membranes

For the first time researchers have shown that freestanding metal membranes consisting of a single layer of atoms can be stable under ambient conditions This result of an international research team from Germany Poland and ... - Read More

Oxygen's different shapes described

Oxygen 16 one of the key elements of life on earth is produced by a series of reactions inside of red giant stars Now a team of physicists including one from North Carolina State University ... - Read More
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