Articles tagged with Water Molecules
A new study reveals that many exoplanets around M-dwarf stars may be composed of half water and half rock, rather than having surface oceans. The discovery suggests that these planets are likely to have water embedded in the rock or in pockets below the surface.
A Japanese team has introduced a molecular cage with 'caps' that can confine certain rare-earth-metal ions, including lanthanum and europium, for isolation or recycling. The critical feature of the cage is its two 'caps' that cover the openings and bind to the ions through hydrogen bridges and electrostatic interactions.
Researchers have uncovered new evidence of a liquid-liquid phase transition in water, where molecules form 'entangled' arrangements at low temperatures. This finding has significant implications for understanding the physics of water and could pave the way for new experiments to validate the theory.
Chemists at UCLA and Northwestern University developed a simple way to break down nearly indestructible 'forever chemicals' at relatively low temperatures with no harmful byproducts. The technology uses common reagents in heated water to sever molecular bonds in PFAS, leaving only harmless compounds.
Researchers at Princeton University used artificial intelligence to simulate ice formation by individual atoms and molecules with quantum accuracy. This breakthrough enables tracking of hundreds of thousands of atoms over longer timespans than previous simulations.
A team of researchers developed a low-energy and efficient way to harvest and concentrate valuable chemicals from microalgae, which can be grown on waste materials. This membrane-based process enables continuous extraction and concentration of secreted metabolites, paving the way for large-scale bio-factories.
Researchers have gained new understanding of solvation, a process that changes water's physical and chemical properties. Strong interactions between ions and water molecules are disrupted by electrostatic interactions, leading to changes in intermolecular energy transfer.
Researchers have successfully mapped the potential energy surfaces of individual water molecules in liquid water at room temperature and normal pressure. This breakthrough uses X-ray analysis and statistical modeling to reveal the complex behavior of water molecules, shedding light on their role as a solvent.
Researchers have found a signaling molecule that helps plants survive flooding by triggering a molecular emergency power system. Pretreating plants with ethylene improves their chances of survival. The study could lead to the development of resistant plant varieties to combat waterlogging and flooding in agriculture.
Researchers at the University of Tokyo have created a fast and efficient method for purifying saltwater using fluorine-based nanostructures. The new technology outperforms existing desalination methods, requiring less pressure, energy, and time to produce clean water.
A new study by University of Alaska Fairbanks Geophysical Institute scientists finds that hydrogen and oxygen ions escaping from Earth's upper atmosphere could combine on the moon to create lunar water and ice. The research estimates up to 3,500 cubic kilometers of surface permafrost or subsurface liquid water created from these ions.
Researchers successfully measured the wettability of graphene and other 2D materials using VSFG, a surface-selective tool that connects macroscopic and molecular-level properties. The study found that graphene's 'wetting transparency' diminishes with increasing layers, becoming hydrophobic at a certain point.
Researchers have uncovered significant trends in hot Jupiters' atmospheres, including dramatic temperature swings and the presence of metallic elements. The study's findings provide valuable insights into the evolution of our solar system and offer a better understanding of exoplanet populations.
Researchers have developed an eco-friendly and reusable solution for removing toxic synthetic dyes from wastewater using nanocomposite-based hydrogels. The new material, made from carboxymethyl cellulose (CMC) and graphene oxide, demonstrates high adsorption capacities and retains its effectiveness even after multiple cycles of use.
Scientists at Tohoku University have discovered a compound that can reversibly store and release large amounts of low-grade heat. The birnessite-type layered manganese dioxide with crystal water compound has shown better performance compared to other compounds for heat storage purposes.
Researchers at KAUST have developed a low-cost method to generate carbon-free fuels by coating a metal foam with iron and cobalt nanomaterials. The device splits water molecules into oxygen and hydrogen, a potential green fuel, using renewable electricity.
A team led by Osamu Takahashi developed a procedure to reproduce the double peak feature of x-ray emission spectroscopy spectra in liquid water. They used molecular dynamics calculations and first principles quantum mechanical calculations to estimate XES spectra, reproducing features such as the double peaks.
Scientists at the University of Copenhagen have developed a method to produce non-alcoholic beer that tastes like regular beer, improving its flavor and sustainability. The technique involves using micro-factories of yeast cells to release hop aroma molecules, eliminating the need for expensive aroma hops.
Researchers from the University of Amsterdam have found that ice can heal itself by forming a new layer of ice to cover scratches and cuts. This discovery could potentially extend breaks between skating races, but careful control of moisture in the air is still necessary.
Researchers propose that water molecules interact with electrons in the nanotube walls, slowing down flow. Theoretical findings could significantly impact proposed carbon nanotube applications, such as filtering salt from seawater or generating energy.
Researchers at TTUHSC developed novel hydrophilic nanoparticles that target bacterial membranes, killing pathogens while sparing mammalian cells. The nanoantibiotics' size-dependent activity reveals a new blueprint for developing non-toxic and environmentally friendly antibiotics.
Researchers created a humidity sensor mimicking camel noses to detect moisture levels in industrial exhaust and human skin. The device responds to changes in skin perspiration and can even follow the path of a finger, suggesting a potential basis for touchless interfaces.
Scientists investigated nanoparticle dispersions in aqueous solution to track down capacitance and rearrangement processes at platinum and gold nanoparticles. They found that dissolved ions accumulate between compact water layers, leading to unexpectedly high capacitances.
A team of researchers used the X-ray laser European XFEL to study the detailed dynamics of how water molecules break apart when exposed to high-energy radiation. The study reveals that the disintegration process is more complicated than expected, with the oxygen atom not being flung away hard when the molecule breaks up.
Recent study uses advanced spectroscopy techniques to observe water molecules in superconcentrated salt solutions and identifies heterogeneity in solvation structure. This finding explains the unexpected fast lithium-ion transport in highly viscous electrolytes.
A team of researchers found evidence that solar wind altered the chemical composition of ancient asteroid grains, producing water molecules and providing a possible source for Earth's oceans. The discovery could help future space missions find sources of water on airless worlds.
Scientists investigate how positively and negatively charged ions behave at solid-liquid interfaces. They found that the hydration shell of positively charged sodium ions is stripped away at small voltages, while negatively charged chloride ions require higher voltages.
Researchers at Tel Aviv University discovered a central mechanism in plants that helps them deal with drought conditions and water shortages. They found that the ABA signal molecule is stored in inactive state in leaves and released under desired conditions, allowing plants to rapidly respond to changing environmental conditions.
Researchers designed a sub-nanometer molecular rectifier utilizing destructive quantum interference and asymmetric supramolecular interaction, overcoming electronic functionality challenges. The device achieves rectification behavior at the sub-nanometer scale, enabling potential miniaturization of electronic devices.
Researchers used Hubble Space Telescope observations and theoretical models to study a broader population of hot Jupiters. The study provides insight into planet formation and suggests that these planets contain similar sets of molecules, including water and carbon monoxide.
Marine plankton emit sulfur that can form clouds, but existing clouds absorb most of it, reducing cloud formation. The discovery challenges current understanding and may impact climate change predictions.
Researchers have observed hydroxyl-hydronium complex in ionized liquid water using MeV-UED instrument. This discovery is significant for understanding chemical reactions and has implications for fields such as space travel, environmental remediation, and medicine.
A recent study measured 60 DBPs in three types of tea and found that brewed tea contained significantly lower levels of DBPs than tap water. However, the researchers also identified 15 previously uncharacterized compounds that likely form from chlorine reactions with natural precursors in tea leaves.
Protons seem to migrate faster than other ions in free aqueous solutions, but individual protons do not really move. In confined spaces, protons get stuck in an oscillatory state due to confinement effects and acid concentration.
Researchers directly observe hydrogen bonds in water for the first time, revealing effects that could explain water's strange properties and inform life on Earth. The study uses SLAC's MeV-UED to detect subtle molecular movements, providing a new window into understanding water's role in chemical and biological processes.
Researchers at IOCB Prague develop a method to prepare metallic water without high pressure, by dissolving electrons from alkali metal in water vapor. The resulting solution lasts several seconds and contains dissolved alkali cations and hydroxide and hydrogen.
Researchers at Penn State create a material that can capture and purify water by forming a film with fluorinated amino acids. The film is able to hold PFAS substances for up to 24 hours, making it a potential tool for contaminant removal in drinking water.
Scientists have found a low-cost way to split off oxygen molecules from water using sunlight, paving the way for more efficient production of clean hydrogen. The breakthrough uses a technique that creates electrically conductive paths through a silicon dioxide layer, allowing for stable and efficient water splitting.
Researchers at Tokyo Institute of Technology have created a simple and additive-free method to synthesize water-stable amphiphilic molecules. The new catalyst- and reagent-free approach uses the Staudinger reaction to form stable azaylide-based amphiphiles that can self-assemble into micelles in water.
A study by University of Illinois researchers has shown that small quantities of hydrocarbons can be produced when CO2 and water react in the presence of light and a silver nanoparticle catalyst. The findings demonstrate a viable technology for renewable energy generation and chemical manufacturing.
Scientists have discovered that water molecules respond differently to an electrode surface, affecting how substances dissolve in water and chemical reactions occur. This breakthrough could lead to more accurate simulations for water desalination and potentially provide clean water faster, cheaper, and cleaner.
Researchers at Southwest Research Institute are developing a cost-effective method for harvesting water from atmospheric air using silica gel beads. This approach can capture water vapor molecules at low humidity levels, making it a promising solution for communities with limited access to clean water.
Researchers track water molecule movement using Helium Spin-Echo technique, revealing repulsion between water molecules on graphene surface is crucial for ice formation. This discovery challenges previous understanding of ice nucleation and provides new insights into controlling ice formation.
An international team of researchers has developed a way to replicate a natural process that moves water between cells, mimicking the functions of aquaporins in our bodies. The new channels can carry water faster than current membranes while excluding protons and unwanted molecules.
Simple chemical compounds, like hydroxy acids, spontaneously link together to form structures reminiscent of modern cells when dried from solution. These structures may have helped scaffold the emergence of biological cellularity.
The 2021 class includes notable inventors like Dean Kamen and Mark Dean, whose work on the Segway and original IBM PC revolutionized technology. The inductees collectively hold over 675 U.S. patents, addressing pressing issues like healthcare, education, and environmental sustainability.
A research team observed hydrogen-bond structure of water molecules on graphene-water interfaces using vibrational sum-frequency generation spectroscopy. They found that as the number of layers increases, graphene becomes increasingly hydrophobic. VSFG spectroscopy provides a detailed picture of interfacial water at the molecular level.
A team of researchers from Ruhr-University Bochum and Sorbonne Université has discovered the significant contribution of small hydrophobic molecules to the energy costs of electrochemical reactions. The study found that these molecules interact with water at interfaces, leading to a crucial role in the chemical reactions.
Researchers at UConn used ultrafast lasers to measure the interaction between helium atoms, discovering that bubbles can enhance energy transfer. This finding has significant implications for understanding how living tissues react to radiation exposure.
MIT engineers develop wicking fabrics from polyethylene, a material previously dismissed for textile use due to its water-trapping properties. The new fabrics show improved moisture-wicking ability compared to cotton, nylon, and polyester.
Computational models predict solute-surface affinity, allowing for more effective membrane design and improved energy efficiency. Researchers discovered that surface water molecular structures play a crucial role in determining affinity.
Researchers at Max Born Institute observe terahertz radiation from electrons localized in liquid water, displaying a frequency between 0.2 and 1.5 THz. The emission persists for up to 40 ps, with surprisingly weak damping, allowing for potential manipulation.
Researchers have gained insights into how tiny, powerful bubbles are formed by ultra-fast vibrations, which could improve dental hygiene devices and other technologies. The study's findings suggest that nanobubbles can form through boiling or cavitation processes, paving the way for future research.
Researchers used advanced technique to study phenol reaction at air-water interface, revealing a 10,000-fold increase in reaction speed compared to bulk water. The findings could improve understanding of catalytic chemistry and its impact on the global environment.
A team of Chinese researchers developed a material that can both quickly detect and efficiently remove ozone. The porous material, called an imine COF, works reliably at high humidity and over a wide temperature range.
Researchers developed theoretical models to predict clathrate hydrates outside Earth, revealing contrast in stable water forms on celestial bodies. Clathrate hydrates play a crucial role in preserving atmospheric volatile gases, storing them slowly over geological timescales.
Researchers from the US, China, and Russia have discovered a novel hydrogen hydrate that forms at room temperature and low pressure. The new form of ice has three water molecules per hydrogen molecule, showing promise for cost-effective hydrogen storage solutions.
Researchers found prebiotic organic molecule hexamethylenetetramine (HMT) in three carbon-rich meteorites, validating theories of its role in forming organic compounds. HMT is thought to be a stable source for ammonia and formaldehyde, which can form other important biological molecules.
Researchers discovered water's unique properties when confined in a tiny cage, facilitating access to the catalytic center. The team showed that water forms a droplet inside the cage, structurally and dynamically distinct from known phases of water.
Researchers developed a non-toxic hydrothermal treatment that enhances conductivity of PEDOT:PSS films by 250 times, making them suitable for biomedical applications.