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 novel molecular mechanism that regulates secretion of the sonic hedgehog signaling molecule
Research led by Hong Kong University of Science and Technology (HKUST) has revealed a novel mechanism that regulates secretion of sonic hedgehog (Shh), a key signaling molecule that plays an important role in cancer progression in mammals, opening th.....»»
Collisions with electrons cool molecular ions
A lone molecule free in cold space will cool by slowing down its rotation—it will spontaneously lose its rotational energy in quantum transitions, typically only once in many seconds. This process can be accelerated, slowed down, or even inverted b.....»»
New 3D structure could lead to future drugs against cancer
A team of scientists has created a three-dimensional map showing how a small molecule with anticancer properties—called spliceostatin—can promote the killing of cancer cells. This fundamental discovery could ultimately help researchers design fut.....»»
Controlling chemical mirror images
Chirality, while not a rarity in the world of molecules, is nevertheless a special property. If a molecule is chiral (from the Greek word chiros = hand), it exists in two mirrored versions that are very similar but not identical—like two hands that.....»»
Single-molecule techniques illuminate mechanisms of GPCR activation
Scientists at St. Jude Children's Research Hospital and Columbia University/New York State Psychiatric Institute are studying G protein-coupled receptors (GPCRs), membrane proteins that are the target of one-third of approved drugs. Using single-mole.....»»
New molecule sets stage for nickel as a "greener" photocatalyst, reveals key steps in reaction process
In recent years, the golden word in precious metals is palladium......»»
Tuning exact ratios of two metals in a catalyst may enable new directions in catalysis science
In the last 20 years, there have been efforts to reduce fossil fuel use in plastics manufacturing, and, according to Penn State researchers, efficient, customizable catalytic reactions—where two metals are combined using a catalyst, or molecule tha.....»»
Deformation of hydrogel used to measure the negative pressure of water
Water, unexpectedly, has the potential to withstand a massive stretching force or tension due to its internal cohesive force. Under extreme tension, the hydrostatic pressure of the water would display as absolute negative. The comprehension of such a.....»»
Scientists turn a hydrogen molecule into a quantum sensor
Physicists at the University of California, Irvine have demonstrated the use of a hydrogen molecule as a quantum sensor in a terahertz laser-equipped scanning tunneling microscope, a technique that can measure the chemical properties of materials at.....»»
Not quite Le Mans: 24-hour race won by molecule that traveled 1 micron
A gold-plated racetrack and fuel from a scanning tunneling microscope. Enlarge / Two views of hardware from the world's largest electron microscope, which loomed over the event. (credit: Dhananjay Khadilkar) C64H22CuF6N4: it.....»»
Researchers Create a Magnet Made of One Molecule
Sometimes making a brand-new type of box requires outside-the-box thinking, which is exactly what Spartan chemists used to create an eight-atom, magnetic cube. Phys.Org reports: Part of what made the researchers' idea so wild was their choice to work.....»»
Research could enable assembly line synthesis of prevalent amine-containing drugs
A University of Illinois at Urbana-Champaign research team has discovered a way to produce a special class of molecule that could open the door for new drugs to treat currently untreatable diseases......»»
Study identifies therapeutic target for Alzheimer’s disease, revealing strategy for preventing or slowing disease progression
A new study suggests a key protein molecule plays a major role in the accumulation of brain cholesterol, triggering the development of Alzheimer's and supporting the use of peptide inhibitors as a therapeutic treatment target. The study found that mi.....»»
Discovery provides insight into neglected tropical disease schistosomiasis
A team led by UTSW researchers has identified a molecule produced by male parasitic worms called schistosomes that prompts sexual maturity in females of these species. The findings, reported in Cell, help answer a century-old mystery and could lead t.....»»
People around the world like the same kinds of smells
What smells we like or dislike is primarily determined by the structure of the particular odor molecule. A collaborative study involving researchers from Karolinska Institutet, Sweden, and the University of Oxford, UK, shows that people share odor pr.....»»
Researchers create a sea of nano-sized gold stars
Researchers from the Department of Energy's Pacific Northwest National Laboratory (PNNL) and the University of Washington (UW) have successfully designed a bio-inspired molecule that can direct gold atoms to form perfect nanoscale stars. The work is.....»»
Checkpoints enable precision in cells" molecule intake
Cells are much more precise in how they ingest substances than previously thought, new research finds, opening the door to potential treatments for several diseases......»»
Quasi-periodic oscillations detected in pulsar LMC X-4
Using ESA's XMM-Newton telescope, Indian astronomers have performed X-ray observations of a binary X-ray pulsar known as LMC X-4. The observational campaign resulted in the detection of quasi-periodic oscillations (QPOs) in this source. The finding i.....»»
Cryo-EM reveals how "911" molecule helps fix damaged DNA
When something goes wrong during DNA replication, cells call their own version of 911 to pause the process and fix the problem—a failsafe that is critical to maintaining health and staving off disease......»»
Scientists discover how molecule becomes anticancer weapon
Years of toil in the laboratory have revealed how a marine bacterium makes a potent anti-cancer molecule......»»