Articles tagged with Water Molecules
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Researchers at UNC Chapel Hill develop new technique to trap single water molecule inside protein molecule using mass spectrometry, improving inhibitor molecules for cancer treatment. The discovery may lead to more effective combination therapies with anti-cancer agents like cytarabine.
Researchers at Arizona State University have successfully moved water molecules by light using nanotechnology, amplifying the 'lotus leaf effect' to overcome hysteresis. This discovery could speed development of microfluidic devices for pharmaceutical research and analysis.
Scientists examine how oleic acid reacts with ozone and water molecules in the atmosphere, producing hazardous byproducts that can cause respiratory problems. The researchers aim to measure the exact amount of these byproducts formed during reactions.
Researchers have discovered a key principle in protein folding that may help understand neurodegenerative diseases. By studying the formation of raindrops, scientists have developed a new theory that can analyze protein folding in a clearer light, offering a potential step toward understanding and treating these diseases.
Researchers at Yale University confirm the formation of dodecahedral water cages but find no evidence of the Eigen species. The study uses experimental techniques and supercomputers to determine how water molecules interconnect to form these cages, which play a crucial role in biological processes.
A team of scientists has found that water molecules in liquid form clump much more loosely than previously believed, challenging 20 years of research. This discovery reopens the hunt for a better understanding of water's unique properties and potential applications in fields like biology.
A team led by scientists at Stanford Synchrotron Radiation Laboratory found that water molecules form only two hydrogen bonds instead of the previously believed three or four. This discovery reopens the hunt for the structure of liquid water and could lead to a better understanding of the chemistry of cells.
Researchers have confirmed that molecules of water can freeze together to form a perfect crystal, allowing it to be manipulated by electric fields. This discovery enhances scientists' understanding of how naturally occurring particles of ice interact with the environment, particularly in chemical reactions such as ozone depletion.
Researchers at Hamilton College have found that atmospheric water clusters could play a key role in accelerating the Greenhouse effect. The team's calculations suggest that larger water clusters should be detectable in the lower troposphere.
Scientists Y-Z Yue and C.Austen Angell challenge the accepted temperature for water's glass transition, proposing that it crystallizes before softening. This discovery offers a new understanding of water's phases, revealing that glassy water can remain solid at higher temperatures.
Researchers found that the lifetime of water's OH-stretch vibration increases with temperature, weakening hydrogen bonds and allowing molecules to vibrate longer. The study used ultrafast infrared lasers to measure the number of vibrating molecules, revealing a unique property of water.
Researchers solved the structure of aquaporin Z, a water channel found in Escherichia coli that conducts only water at high rates. The protein's unique architecture and strategically positioned amino acid residues restrict the flow of larger molecules, allowing it to maintain osmotic equilibrium.
Scientists have created giant wheel-shaped polyoxomolybdate molecules that associate and evenly distribute onto the surface of hollow spheres in dilute solution. Hydrogen bonds play a crucial role in this process, forming a 'glue' that overcomes electrostatic forces and holds the wheels in place.
NIST scientists have developed a new tool in chemical sensing called microboiling, which uses tiny vapor bubbles to detect specific substances. The technique can measure changes in boiling behavior in just 5 microseconds, making it faster than typical lab techniques.
Developed by Z-Medica Corporation and funded by the Office of Naval Research, QuikClot has been proven effective in treating severe arterial hemorrhage with a high success rate. The product is set to be released for consumer use this summer and may also help individuals with specific bleeding disorders.
Researchers at Spin Master Toys developed a new bubble solution that can last for weeks, thanks to a strengthening polymer. The 'Catch-A-Bubble' product uses a combination of soap and water to create long-lasting bubbles that can withstand evaporation.
Purdue University researchers have developed an ultrathin film containing single layers of nanometer-thick clay particles. This breakthrough could lead to the creation of smart materials with unique properties, such as sensors that detect biological and chemical agents more quickly and stronger plastics.
The discovery reveals free water, loosely bound water, and tightly bound water, each influencing the process's speed and efficiency. The findings have significant implications for fuel cell development and potential improvements in hydrogen production.
Researchers have developed a new way to create molecular sieves with aligned tunnel-like pores, enabling more efficient filtration and potential applications in water purification and optical components. The discovery opens doors to producing uniform fibers and even sheet-like materials with controlled properties.
Researchers grew a molecular film on liquid mercury, discovering four distinct patterns as molecules assemble. The study paves the way for controlling film growth and tailoring materials for nanoelectronics and nanosensor technology.
A team of researchers led by A. Welford Castleman Jr. has discovered exactly how an acid compound dissolves molecule by molecule using water molecules as a solvent. The study found that the interaction of four surrounding water molecules with the hydrogen-bromide molecule tips the energy balance, triggering its eventual dissolution.
Researchers tracked water molecule movement on palladium surface, discovering clusters of two to six molecules exhibiting high mobility when bound together. The formation of hexamers led to stable honeycomb structures, which spread out and interacted with the substrate's lattice.
Researchers at Arizona State University have developed a technique called photocapillarity that uses light beams to pull water up tiny tubes, overcoming challenges in building nano-scale pumps and valves. This technology may one day be used for targeted distribution of medicine in the body.
A new device produced high-energy electron beams to break down harmful organic molecules and kill bacteria such as anthrax, providing a more affordable alternative to existing technology. The Coupled Multiplier Accelerator (CMA) has been licensed for commercial use to treat contaminated water and food.
Researchers used computer simulations to track proton transport in basic solutions, revealing a complex process with different mobility mechanisms than acidic environments. This knowledge could aid in designing materials or processes that utilize proton conduction phenomena.
DNA molecules are pulled into a dense array of pillars by an electric field and then recoil back into the open space due to entropic forces. The researchers estimate the minimum entropic force at 5.7 femtoNewtons, suggesting this method could be used to separate molecules by length.
Researchers at the University of Illinois have successfully simulated the movement of water molecules through aquaporins, ensuring only water passes between cells. The study reveals that water molecules pass single-file and reverse orientation midstream, preventing ion conduction and maintaining cell metabolism.
A recent study by Dr. Lidija Siller from Newcastle University suggests that water might be trapped beneath the surface of Mars' south polar ice cap, a key factor in the formation of life on the planet. The research involves studying photochemical reactions in ice and has potential implications for the detection of life on Mars.
A Los Angeles chemist has won a national award for his groundbreaking research on thin films, specifically monolayers. His technique allows scientists to study these structures at the atomic level, which can lead to breakthroughs in fields like cell membranes and respiration.
Theoretical physicist Peter Feibelman found that water molecules dissociate near the surface, forming a 3-D ice cube instead of a puckered hexagon. This discovery explains why a flat water layer exists on metal surfaces, which has implications for micro- and nanotechnology.,
Aquaporins regulate water flux in various tissues, including the kidney, eye lens, and brain. Recent computer simulations revealed a 'dance' of water molecules through aquaporin channels, controlled by protein parts that increase permeation rates while blocking proton passage.
Researchers found that groundwater in aquifers is generally older than expected based on flow velocity, due to mixing between aquitards and aquifers. This discovery has significant implications for estimating water supply yields and predicting contaminant migration rates.
Researchers at UC Berkeley and Stanford University discovered how lobsters sniff their way around a watery world by flicking antennules into contact with chemosensory hairs sensitive to chemicals. This motion captures detailed maps of swirling odors, suggesting that small differences in odor concentration are preserved.
Researchers found that water molecules can move through tiny carbon nanotubes in short bursts, with changes in interaction causing the tube to empty or fill. This dynamic behavior has implications for understanding how water is conducted in biological channels and may contribute to developing new sensors.
Researchers have created a nearly defect-free LB film using steric acid molecules, promising improvements in sensor devices and electrical switches. The breakthrough involves using cadmium ions to lock the molecules together, enabling a single layer without holes or irregularities.
Researchers at the University of Illinois discovered that fluids with high enough speed can slip over smooth solid surfaces, unlike textbook predictions. This phenomenon has significant implications for applications such as microfluidic devices and lubrication in computer hard drives.
Researchers using NASA's Submillimeter Wave Astronomy Satellite (SWAS) have discovered that water vapor is 10,000 times less abundant than previously thought in interstellar clouds. The satellite's findings also indicate that molecular oxygen is at least 100 times less abundant than predicted, contradicting prevailing wisdom.
Researchers have isolated nucleic-acid base pairs and observed their pairing mechanism, shedding light on the structure of DNA. By studying individual base molecules in a controlled environment, they found that there is only one way for them to bond, similar to the connection between Lego building blocks.
Researchers at NC State University have developed a new process for creating superhydrophobic polymer surfaces that are longer-lasting and more environmentally friendly. By increasing the surface area of a flexible material before attaching coating molecules, they can achieve superior water resistance and durability without using solve...
The researchers discovered a glycerol-conducting channel that selectively filters simple carbohydrates while blocking access to smaller water molecules and ions. This finding sheds light on how protein channels embedded in cell membranes work.
Researchers at the University of Illinois have developed a multidimensional technique that enhances vibrational spectroscopy, allowing for unprecedented detail in studying molecular vibrations. This new method enables femtosecond-resolved snapshots of molecular motions, providing insights into the fundamental mechanics of molecules.
Researchers at Boston University developed a computer model to analyze how molecules move through super-cooled water, providing insights into life's survival at sub-zero temperatures. By understanding the 'energy landscape' of super-cooled water, scientists can predict how molecules diffuse and carry nutrients to cells.
Researchers have found that most of the interstellar dust particles consist of 3-dimensionally cross-linked organic macro-molecules, called polymeric-heterocyclic-aromates. These molecules have been detected in five impact mass spectrometer samples from NASA's STARDUST spacecraft.
Richard J. Saykally, a physical chemist at the University of California, Berkeley, is honored by the American Chemical Society for his work on water's unique properties. He aims to model liquid water on a computer to predict its behavior and influences.
A team of UC Davis researchers has developed a novel method to quantify the rate at which minerals and water exchange oxygen molecules, which could provide a useful test for computer models. The study's findings could have practical applications in dealing with soil contaminants and predicting their movement or decomposition.
Researchers have developed a new technique called Doubly Vibrationally Enhanced (DOVE) Four Wave Mixing, which uses two infrared lasers to study molecular connections and vibrations. This method allows chemists to gain insights into complex scientific problems, such as bacterial resistance to antibiotics and soil weathering.
Researchers at UNC-CH successfully created six-molecule water rings, mimicking natural ice structure. This achievement aims to boost knowledge of water's unique properties and hydrogen bonding forces.
Researchers at Northwestern University create a new technology called nano-plotter, which enables precise placement of multiple molecules on a solid substrate. This innovation could lead to advancements in molecule-based electronics, molecular diagnostics, and catalysis.
INEEL researchers develop polyphosphazene membranes for efficient chemical separation and waste minimization, offering stability up to 300 degrees Celsius. The hybrid membrane combines organic and inorganic molecules for improved durability and versatility.
In a groundbreaking study, researchers directly observed molecules of liquid forming three solid-like layers near a solid surface. The findings suggest that liquids do not behave like bulk liquids in confined geometries and have significant implications for the development of lubricants and thin film coatings.
A recent Arizona State University study found that comet gas tails contain high concentrations of ionized carbon monoxide, contrary to previous assumptions that they were composed mostly of water. The team's discovery explains why carbon monoxide molecules are more resilient than water molecules when exposed to sunlight.
Researchers at Northwestern University have created a world's smallest and sharpest pen that can draw lines just a few dozen molecules wide, opening up new ways to explore the nano-world of electronics based on molecules. The 'dip-pen nanolithography' technique uses an atomic force microscope to transfer molecules with high precision o...
Researchers use fully quantum-mechanical simulations to study proton diffusion in acids, finding that the proton migrates by interconverting hydrogen bonds into strong covalent bonds. Quantum tunneling is not involved, and the defect's delocalization is induced by zero-point motion of excess protons.
A new sensor developed by Johns Hopkins researchers can detect minute traces of nerve agents sarin and soman in water, boasting sensitivity levels a million times greater than previous reported solutions. The sensor combines molecular imprinting with optical luminescence to achieve this remarkable detection capability.
Asthma researchers identified two molecules, interleukin-4 and interleukin-13, that connect to a specific receptor and initiate inflammation, increasing the number of goblet cells producing excessive mucus. This finding paves the way for developing more effective treatments that control the disease at its cellular level.
Scientists have developed SAMMS, a self-assembled monolayer on mesoporous support that selectively binds toxic or precious metals like mercury and lead. The technology has shown promise in cleaning up contaminated waterways and recovering valuable metals.
Scientists at Sandia National Laboratories and UNM develop a rapid method to self-assemble diverse materials into coatings mimicking seashell structures. The coating process creates tough, strong, optically transparent coatings suitable for automotive finishes, optical lenses, and other applications.
Researchers used low-energy helium atom scattering to study the topmost layer of ice, finding that water molecules vibrate strongly, causing a coherent diffraction pattern to be elusive. The results explain why ice is slippery, adheres to other ice surfaces, and traps molecules in the stratosphere, leading to ozone depletion.
Scientists at the University of Delaware have created a novel approach to detecting molecular-scale flaws in computer chip templates, allowing for real-time polishing techniques. This innovation could improve photomask precision and reduce production time, enabling faster and more accurate chip manufacturing.
A team of scientists uncovered how protons move and share in hydrogen bonds under extreme pressure, shedding light on biological processes like enzyme catalysis. This discovery could lead to advancements in materials science and chemistry.