Rabi oscillations in a stretching molecule
Over eighty years ago, Rabi oscillations were proposed to describe the strong coupling and population transfer in a two-level quantum system exposed to an oscillatory driving field. As compared to atoms, molecules have an extra degree of vibration, w.....»»
A fast and efficient method for detecting microRNAs
In the early 1990s, scientists who were studying the development of a roundworm identified a small RNA molecule that regulated the expression of specific genes. This marked the discovery of microRNAs (miRNAs), which are now known to be present across.....»»
On-demand preparation of organosilicon reagents
National University of Singapore (NUS) scientists have demonstrated that stepwise customized functionalization of multihydrosilanes to access fully substituted silicon compounds can be realized using neutral eosin Y, an inexpensive dye molecule......»»
Low tech makes cleaner water in Iowa; so what"s stopping it?
Nick Helland's central Iowa farm looks much like every other nearby farm on this chilly March day, with corn stubble stretching from a gravel road up over a low hill to the northern horizon......»»
Dreams live support is ending — and that’s a big misstep for PlayStation
Live support for Media Molecule's Dreams is being discontinued on September 1, highlighting one of Sony's biggest missed opportunities......»»
Scientists discover a way Earth"s atmosphere cleans itself
Human activities emit many kinds of pollutants into the air, and without a molecule called hydroxide (OH), many of these pollutants would keep aggregating in the atmosphere......»»
A new quantum approach to solve electronic structures of complex materials
If you know the atoms that compose a particular molecule or solid material, the interactions between those atoms can be determined computationally, by solving quantum mechanical equations—at least, if the molecule is small and simple. However, solv.....»»
Video: Repeat expansion disorders—how RNA may gum up the works
What happens when an RNA molecule contains too many repeats of the same short sequence of bases, or RNA building blocks?.....»»
Researchers discover a way to observe chromatin interaction changes in cancer-associated genetic mutations
Studying the microbiology of any entity, be it a molecule or a dolphin, ideally means putting a spotlight as close to the source material as possible. That can be especially challenging when you're investigating the Rube Goldberg environment of a cel.....»»
The modulation of a single-molecule electron source using light
Researchers at University of Tokyo, JTS PRESTO, Ludwig Maximilians Universität and Kindai University recently demonstrated the modulation of an electron source by applying laser light to a single fullerene molecule. Their study, featured in Physical.....»»
Understanding how cohesin makes DNA loops in the human genome and its role in Cornelia de Lange syndrome
Cohesin is a ring-shaped protein that surrounds and moves around the DNA molecule, forming the loops. It is a crucial process for the cell. Understanding how cohesin works has been one of the challenges of molecular biology in recent decades. A study.....»»
Discovery of drug candidate that neutralizes SARS-CoV-2 could reduce length of infection upon exposure
The discovery of a small molecule in the research lab of Bradley McConnell, professor of pharmacology at the University of Houston College of Pharmacy, may well be the genesis of new medication which could shorten the course of the SARS-CoV-2 virus......»»
Storing information with spins: Creating new structured spin states with spatially structured polarized light
Light is composed of electric and magnetic fields that oscillate perpendicular to each other. When these oscillations are restricted, say, along a plane, it results in polarized light. Polarized light is of great importance in optical communications,.....»»
A new, sustainable source for a promising cancer killer
Plants produce all types of curious chemicals. Some deter predators. Some smell wonderful. Some even have medicinal value. One of these hidden gems is (–)-jerantinine A (JA), a molecule with remarkable anticancer properties, produced by a plant cal.....»»
Without this, plants cannot respond to temperature
UC Riverside scientists have significantly advanced the race to control plant responses to temperature on a rapidly warming planet. Key to this breakthrough is miRNA, a molecule nearly 200,000 times smaller than the width of a human hair......»»
Using chemical exfoliation to produce superconducting tungsten disulfide ink
A team of chemists, engineers, material scientists and physicists from Princeton University, Rutgers University and the University of Regensburg has developed a chemical exfoliation technique to produce single-molecule-thick tungsten disulfide ink. T.....»»
New machine-learning approach identifies one molecule in a billion selectively, with graphene sensors
Graphene's 2D nature, single molecule sensitivity, low noise, and high carrier concentration have generated a lot of interest in its application in gas sensors. However, due to its inherent non-selectivity, and huge p-doping in atmospheric air, its a.....»»
Breaking bonds: Double-helix unzipping reveals DNA physics
Accurately reconstructing how the parts of a complex molecular are held together knowing only how the molecule distorts and breaks up—this was the challenge taken on by a research team led by SISSA's Cristian Micheletti and recently published on Ph.....»»
Chip-scale spectrometry using a photonic molecule
Chip-scale miniaturization of spectrometers allows rapid detection of spectral information in portable devices, opening up new applications. However, integrated spectrometers typically suffer from a trade-off between spectral resolution and optical b.....»»
Elegantly modeling Earth"s abrupt glacial transitions
Proxy data—indirect records of the Earth's climate found in unlikely places like coral, pollen, trees and sediments—show interesting oscillations approximately every 100,000 years starting about one million years ago. Strong changes in global ice.....»»
Light-to-energy conversion in many aquatic microbes more complex than was previously known, researchers discover
Plants convert light into a form of energy that they can use—a molecule called adenosine triphosphate (ATP)—through photosynthesis. This is a complex process that also produces sugar, which the plant can use for energy later, and oxygen. Some bac.....»»