Brown University chemists have shown a technique that can identify regions in a liquid crystal system where molecular order begins to emerge just before the system fully transitions from disordered to ordered states.
Molecules that are involved in photosynthesis exhibit the same quantum effects as non-living matter, concludes an international team of scientists including University of Groningen theoretical physicist Thomas la Cour Jansen. This is the first time that quantum mechanical behavior was proven to exist in biological systems that are involved in photosynthesis. The interpretation of these quantum effects in photosynthesis may help in the development of nature-inspired light-harvesting devices. The results were published in Nature Chemistry.
Scientists have deciphered the mechanism of a chemical reaction critical for the development of environmentally friendly combustion technologies.
University of Groningen biotechnologists used a computational method to redesign aspartase and convert it to a catalyst for asymmetric hydroamination reactions. Their colleagues in China scaled up the production of this enzyme and managed to produce kilograms of very pure building blocks for pharmaceuticals and other bioactive compounds. This successful proof of principle study was published in Nature Chemical Biology on May 21.
Nanoparticles derived from tea leaves inhibit the growth of lung cancer cells, destroying up to 80 percent of them, new research by a joint Swansea University and Indian team has shown. The team made the discovery while they were testing out a new method of producing a type of nanoparticle called quantum dots. These are tiny particles which measure less than 10 nanometers. A human hair is 40,000 nanometers thick.
Researchers have studied how a 'drumstick' made of light could make a microscopic 'drum' vibrate and stand still at the same time.
Researchers at the Department of Energy's Oak Ridge National Laboratory made the first observations of waves of atomic rearrangements, known as phasons, propagating supersonically through a vibrating crystal lattice -- a discovery that may dramatically improve heat transport in insulators and enable new strategies for heat management in future electronics devices.
Typically we consider that water molecules in the liquid state move randomly on ultrafast timescales due to thermal fluctuations. Now, scientists at Stockholm University have discovered correlated motion in water dynamics on a sub-100 femtoseconds timescale. This appears as 'caging effects' due to buildup of tetrahedral structures upon supercooling. The results, reported in Nature Communications on the May 15, 2018, are based on a combination of experimental studies using X-ray lasers and theoretical simulations.
Researchers at Houston Methodist and Rice University have made a discovery that will impact the design of not only drug delivery systems, but also the development of newer applications in water filtration and energy production. They made this discovery while investigating how the drug molecules in solution travel through a nanochannel drug-delivery system. The findings are described in Nature Communications.
Scientists in Japan have shown the overbonding of channel oxygens in La-rich apatite-type lanthanum silicates, rather than the presence of the interstitial oxygens, to be responsible for the high oxide-ion conductivity.