Articles tagged with Ions
Scientists at Max Planck Institute of Quantum Optics create single photons by trapping a calcium ion between two mirrors, allowing for controlled emission. The device enables user-controlled photon emission time and shape, paving the way for quantum information processing.
Researchers at the University of Washington are developing a new propulsion concept that could dramatically cut the time needed for astronauts to travel to and from Mars. The mag-beam concept uses a space-based station to generate a stream of magnetized ions that propel a spacecraft through the solar system, potentially reducing round ...
Purdue University chemists have improved mass spectrometers to analyze chemical samples quickly and efficiently. The new device uses desorption electrospray ionization (DESI) technique to test untreated samples right where they are found.
Scientists at the University of Illinois developed a new surface chemistry method to control defects in silicon wafers, extending the life of transistor technology. This technique uses nitrogen-containing gases to saturate dangling bonds and remove interstitials, resulting in shallower active regions and enhanced dopant activation.
Researchers develop polymer films that can close up holes ripped through them by high-speed projectiles, potentially improving aircraft survivability. The material's thermal properties influence its self-healing performance, and a balance between restoring force and elasticity is crucial for optimal results.
Physicists at NIST have successfully teleported key properties of one atom to another without physical link, achieving a 78% success rate. This breakthrough technique may enable faster computation speeds and increased efficiency in quantum computing applications.
Scientists at NIST effectively turn atoms into better frequency sensors by entangling them, allowing for faster and more accurate measurements in atomic clocks. This technique could reduce the time needed to measure atomic clock ticks from weeks to months.
Scientists at Yale University used X-ray crystallography to image the self-splicing group-I intron and its associations with metal ions. This discovery reveals an evolutionarily ancient mechanism for RNA splicing, previously thought only possible in proteins.
Catalina Achim, a Carnegie Mellon University chemist, has received the prestigious NSF CAREER award to support her research on incorporating metal ions into peptide nucleic acid (PNA). The grant will also enable her to develop an interdisciplinary course bridging inorganic chemistry and art.
Jacobson's solid oxide fuel cell research has the potential to improve how electricity is generated, making it less expensive and more environmentally friendly. His goal is to investigate different materials used as components in fuel cells to make reactions work at lower temperatures.
Researchers have developed a new technique called X-ray standing wave imaging, which enables direct visualization of ion site distributions at mineral-water interfaces. This breakthrough streamlines the tedious process of structure determination, allowing scientists to complete data acquisition and analysis in under 24 hours.
Researchers have developed a new biological sensor platform that uses phospholipids to detect specific ions and molecules in real-time. The sensors can safely hold water-soluble dyes and enzymes, allowing for detailed analysis of cellular chemistry.
Researchers analyze over 59,000 grains from Acfer 094 meteorite and identify nine specks of silicate stardust. The discovery provides information about stellar sources, nuclear processes, and the physical and chemical compositions of stellar atmospheres.
Researchers have discovered that halogen ions on the ocean's surface play a significant role in atmospheric chemistry, influencing ozone production and potentially exacerbating respiratory problems. The study found that iodide and bromide ions were more likely to react with other chemicals, leading to increased ozone formation.
A new method for improving trench profiles in the Bosch process has been developed, allowing for maximum depth-width ratios of over 30. This is achieved through two techniques: adding a third plasma pulse to remove polymer layer and optimizing passivation pulses to prevent polymer deposition.
A membrane protein called NCX1 plays a crucial role in regulating the frequency and strength of heartbeats by transporting calcium into and out of heart cells. The protein generates electrical currents that contribute to excitation and contraction, making it an important key to understanding cardiac function.
A research team led by OHSU scientists is studying metal homeostasis and its disruption in human cells, focusing on copper and iron concentrations. The project aims to understand the regulation of metals in cells and their impact on disease progression.
Researchers will showcase latest experiments searching for signatures of quark-gluon plasma, a state of matter thought to have existed at the universe's dawn. Controversial observations hint at the possibility of detecting color glass condensate, a previously theorized state within gold ions.
Researchers have confirmed that atmospheric carbon dioxide levels were between 10-200 times higher 1.4 billion years ago than they are today. The discovery provides a geological context for CO2 evolution and climate change.
Element 110, darmstadtium, has been named by the International Union of Pure and Applied Chemistry after its discovery in Darmstadt, Germany. The element was synthesized through a fusion-evaporation experiment using a 62Ni beam on an isotopically enriched 208Pb target.
Researchers at Purdue University have developed a new method to separate proteins in the gas phase, allowing for faster analysis and enabling the study of hundreds of proteins simultaneously. The technique uses a mass spectrometer to collect ions onto different locations on a chip's surface, producing highly pure protein samples.
Researchers at Argonne National Laboratory have made accurate measurements of waiting-point nuclei masses, confirming theories of how X-ray bursts are produced. The unique ATLAS facility enabled precise determination of the selenium-68 nucleus mass, with a precision 30 times higher than previous measurements.
The new center will conduct basic nuclear science research and partner with the Oak Ridge National Laboratory to acquire specific data for the DOE's scientific and engineering effort to maintain the nation's nuclear weapons. The partnership aims to engage faculty, postdoctoral researchers, and students in nuclear science research.
A Ph.D. student in chemistry at Virginia Tech has been selected to attend the 53rd Meeting of the Nobel Laureates, focusing on biochemistry. The student will have personal interactions with Nobel laureates and engage in seminars and roundtable discussions.
Researchers at University of Illinois have developed a highly sensitive and selective biosensor that uses DNA-gold nanoparticle chemistry to detect lead and other metal ions. The colorimetric sensor can be tuned for different contaminant concentrations, making it suitable for on-site detection.
Sandia scientists confirm Z produces fusion neutrons, a crucial step towards self-sustaining fusion reactions. The experiment demonstrates that high-yield fusion is achievable through the application of huge pulses of electricity.
Scientists estimate a significant increase in low-energy cosmic ray flux, leading to enhanced heating and ionization in diffuse interstellar gas clouds. This finding implies the production of more complex molecules than previously thought, with potential implications for the origin of life.
A Rutgers University chemist has developed innovative solid-state materials with broad applications, including sensors. Her research also addresses critical manufacturing needs, such as humidity control.
Researchers at the University of Illinois Chicago have developed a new method for growing conducting polymers, called Surface Polymerization by Ion-Assisted Deposition. This method allows for the creation of large areas of films with controlled chemistry and shape on a nanometer scale.
Researchers have developed a new all-optical-atomic clock that can keep time with greater precision than existing atomic clocks, by five orders of magnitude. The clock uses non-linear optical fibers to generate optical-frequency combs and determine frequencies by counting the number of teeth in the comb.
Researchers at Arizona State University have developed a light-powered molecular pump that shuttles calcium ions through a phospholipid membrane. The operation is controlled by an artificial reaction center molecule, which donates and reabsorbs electrons in response to light. This innovation could be used for various applications, incl...
Researchers use prototype IT-SIMS instrument to detect and analyze VX on concrete, finding that temperature affects degradation rate. Concrete's high basic pH neutralizes VX, causing it to break down over time, with faster decomposition at higher temperatures.
A study of 610 participants found that wearing an ionized bracelet for 28 days did not provide significant pain relief compared to a placebo. The researchers conclude that the equivalent improvement in pain scores may call into question the true benefit of using such bracelets.
A team of researchers has discovered that methane-producing microorganisms use a 'pressure valve' mechanism to regulate energy consumption. By allowing hydrogen ions to leak through the cell membrane at high concentrations, the bacteria minimize energy loss and maintain optimal conditions for growth.
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.
Researchers at Virginia Tech create flexible photovoltaic devices using nanometer-thick layers of self-assembling materials, increasing efficiency to up to 20% of silicon. Electrochromic films also improve response times, enabling faster color changes for applications in flat panel displays.
Researchers David Jiles and John Snyder will focus on mechanisms of clean, multi-element film growth and structuring of films at the atomistic to nano-length scale. Thin-films could replace semiconductor technology for nonvolatile computer RAM, boosting data storage capacity by 10-50 times.
Researchers at the University of North Carolina at Chapel Hill have discovered that carbon nanotubes can store more energy than conventional graphite electrodes, potentially leading to longer-lasting batteries. The study found that carbon nanotubes can contain roughly twice the energy density of graphite.
Researchers at Columbia University have discovered a treatment for heart failure by correcting a specific cellular defect. Beta blockers prevent the excessive phosphorylation of the ryanodine receptor, allowing it to respond to signals and release calcium ions as needed. This finding offers new hope for treating heart failure.
Researchers have visualized the atomic-scale structure of a selectivity filter in ion channels, revealing precise biochemical conditions for ion travel. This discovery may help understand genetic and biochemical abnormalities affecting ion channel proteins, such as long QT syndrome and cystic fibrosis.
Scientists have developed a new block copolymer structure that increases the conductive monomer without weakening the polymer strength. This breakthrough enables better proton conductivity and lower water uptake compared to random copolymers of similar composition.
Scientists aim to recreate the hot, dense conditions of the universe's earliest form by smashing gold ions together at nearly the speed of light. The new run is expected to produce 100 times more data and provide a clearer picture of quark-gluon plasma
A research team at Penn State discovered that consortia of bacteria and archaeobacteria consume up to 80% of marine methane, a potent greenhouse gas. The findings indicate that these microorganisms play a crucial role in regulating the Earth's climate.
Researchers from UCLA and Curtin University of Technology found ancient zircons in a rock that suggest liquid water existed on Earth's surface around 4.3 billion years ago. This discovery supports the idea that the conditions for life were met early on, possibly allowing for the emergence of life as early as 4.3 billion years ago.
Researchers at the University of Illinois have developed a DNA-based sensor that can detect lead ions in real-time. The sensor uses catalytic DNA with high metal ion selectivity and sensitivity to fluorescence detection, making it an ideal candidate for environmental monitoring and clinical toxicology applications.
Researchers at Cornell University have developed a new imaging technique called ion microscopy, which offers high sensitivity for detecting isotopes of elements. This technique promises to open new avenues of cancer research by localizing anticancer drugs inside tumor cells.
Scientists are detecting head-on collisions between gold nuclei in RHIC, producing insights into the structure of matter and the early universe. The collider aims to recreate conditions similar to the Big Bang, allowing for studies of quark-gluon plasma and its properties.
A molecular-level malfunction in patients with heart failure can be repaired with existing treatments, suggesting a new approach to treating the root cause of the disease. The research reveals that a malfunctioning calcium channel is responsible for the defect, and beta blockers may prevent or reverse its development.
Researchers at the University of Michigan have developed a new technique to accelerate ions, using a table-top laser instead of radio-frequency waves. The new technique accelerates ions in almost a million-times shorter distance than a cyclotron, potentially making ion accelerators more affordable and accessible for medical applications.
The Center for Ion Mobility Spectrometry (IMS Center) brings together top researchers to develop new applications and advance fundamental research in ion mobility spectrometry. The center aims to expand the technology's utility into new areas, improving detection of hard-to-detect molecules like pesticides and environmental contaminants.
Polar spacecraft has taken the first measurements showing that solar events directly affect our outer atmosphere. The results correlate CMEs with enhanced ion outflows from the upper ionosphere, providing a new understanding of the complex interactions between the sun and Earth's magnetic field.
Researchers at Hughes Space and Communications have developed a new ion propulsion system that can keep satellites in orbit for up to 25 years, using the inert gas xenon. This innovation reduces the need for frequent fuel replacements, ensuring reliable signal reception and preventing collisions with neighboring satellites.
Dahl's award-winning ion optics simulation program, SIMION, has been instrumental in designing instruments for the Cassini mission to Saturn. On Earth, SIMION is used to analyze environmental contaminants, decode DNA, and uncover illegal drugs in urinalysis samples.
Scientists have identified several elements in the lunar atmosphere, including oxygen, silicon, and aluminum, but only in small amounts. The study aims to learn which other atoms the regolith may release and form part of the Moon's atmosphere.
Researchers have demonstrated an instance of a thin ion layer being pushed downward to create a neutral sodium layer. Contrary to predictions, the formation of this layer was not significantly affected by intense auroral ionization, revealing new insights into the physics and chemistry of the upper atmosphere.
Researchers use storage ring to study molecular recombination process, revealing need for further theoretical work to understand influence of vibrational excitation. The experiment demonstrates the importance of vibrational motion in dissociative recombination and guides future quantum chemistry calculations.
Researchers at UC Davis have successfully assembled a novel calixarene-porphyrin molecule, which shows promise for use in biological and chemical applications. The discovery could enable the development of efficient sensors and filters, including one to detect spoiled seafood.
University of Michigan researchers have created the smallest biosensors ever developed, which can detect subtle changes in living cells' biochemistry. These probes, called PEBBLEs, contain dye that glows when exposed to specific ions or molecules, allowing real-time monitoring of cell processes.
Researchers at NASA's Marshall Space Flight Center found that the Earth's polar fountains of energized gas are a significant source of material for the magnetosphere, contradicting previous assumptions. The discovery was made using a device called TIDE, which neutralizes spacecraft plasma sheaths to detect low-energy ions.
The Boston University team successfully captured the first-ever image of Hale-Bopp's three tails, providing new insights into the comet's composition. The team's innovative detector system and modest telescope size allowed them to detect faint signals from sodium gas, which is not visible to the naked eye.