Articles tagged with Ions
The mangrove killifish uses its skin to maintain ion balance, exchanging ions through the skin cells called ionocytes. The fish can also adapt to varying salinity levels, with skin ionocytes getting bigger in response to saltwater and returning to normal size when returned to water.
Shear Alfvén waves are important in plasma stability and heating, while also contributing to aurora formation and solar corona acceleration
Researchers at HZB observed exotic behavior in beryllium oxide when bombarded with high-speed heavy ions, causing electrons to forget material properties. The results show changes in electronic structure and ultra-fast melting processes around the firing line of the heavy ions.
Researchers have developed a new technique using Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) to detect and differentiate explosives. This technology provides rapid identification of components in explosives like C4, including the explosive active components, additives, binders, and contaminants.
Researchers have identified how a membrane protein transfers essential copper ions throughout the body, which could lead to improved treatment of cancer patients. The study's findings may also help develop more effective chemotherapy drugs by understanding how essential minerals are transferred into cells.
Biologists at Tufts University have discovered that sodium plays a key role in initiating a regenerative response after severe injury, enabling the regeneration of injured spinal cord and muscle. A specific drug-based treatment triggers an influx of sodium ions into injured cells, breaking new ground in biomedicine.
Physicists at University of Innsbruck successfully expose four entangled ions to a noisy environment, demonstrating the variety of flavors or properties in their entanglement. This study forms an important basis for understanding entanglement under environmental disturbances and the boundary between quantum and classical worlds.
Physicists at NIST have measured time dilation effects on two aluminum atomic clocks, demonstrating that time passes faster at higher elevations and slower when moving faster. The clocks' extreme precision reveals subtle differences in timekeeping, potentially leading to practical applications in geophysics.
Researchers at Harvard University have demonstrated that graphene can act as an artificial membrane separating two liquid reservoirs, enabling the measurement of ion exchange and the detection of single molecules of DNA. The graphene membrane's atomic thickness makes it a novel electrical device with potential applications in chemical ...
Scientists are studying how landmass shape affects Arctic sea ice extent, estimating rainfall interception in rainforests, and measuring mountain building rates. Landmass geometry influences Arctic sea ice growth, while forest canopy evaporation accounts for significant water resources loss. Researchers also investigate fault zone resp...
Physicists at NIST developed a new sensor to detect forces at the scale of yoctonewtons using trapped ions. The sensor achieved a measurement speed of 390 yoctonewtons in one second, outperforming previous records by an order of magnitude.
Researchers at New York University have developed a new sodium MRI method that can detect osteoarthritis in its early stages. By analyzing the concentration of sodium ions in cartilage, this non-invasive technique provides a clear map of glycosaminoglycan (GAG) distribution, essential for diagnosing and monitoring diseases.
Researchers observe valence electrons' motion for the first time, revealing coherent superposition that controls properties. The discovery uses attosecond absorption spectroscopy to explore electron dynamics in atoms and molecules.
Researchers found that an enzyme in the cholera bacteria uses a previously unknown mechanism to provide energy. This discovery offers insights into creating drugs to target the bacteria without harming humans. The study provides new understanding of how living organisms convert energy and transport ions.
Researchers plan to use FAIR facility in Germany to expose water molecules to heavy ion beams, generating extreme pressure conditions similar to Neptune's core. This will allow scientists to observe 'superionic' state of water, a hybrid phase with oxygen lattice and hydrogen liquid.
Physicists at NIST have demonstrated an ion trap with a built-in optical fiber, enabling the measurement of quantum information stored in ions. The device simplifies quantum computer design and paves the way for swapping information between matter and light in future quantum networks.
Researchers at SLAC's Linac Coherent Light Source use the facility's bright, brief flash to study how x-rays strip electrons from nitrogen atoms. The results show that nitrogen molecules absorb less x-ray radiation with shorter flashes, enabling snapshots of ultra-fast chemical and molecular processes.
Researchers at Lawrence Berkeley National Laboratory are developing gamma-ray detectors to improve cancer therapy using heavy-ion beams. The Compact Compton Imager 2 (CCI-2) is a compact imager that can provide real-time images of the ion beam's energy distribution in tumors.
Researchers at GTRI are designing, fabricating and testing planar ion traps to create large, interconnected trap arrays for a useful quantum computer. The team has used state-of-the-art simulations and genetic algorithms to design versatile traps capable of holding many ions.
Researchers at Cambridge have developed a way to visualize chemistry in lithium-ion batteries using Nuclear Magnetic Resonance (NMR) spectroscopy. This technique could help identify the formation of dendrites, which cause short circuits and fires, enabling the development of safer battery technologies.
Researchers developed a new type of wearable impact sensor based on composite materials that generate an electrical current when compressed. The sensors can measure the forces acting on athletes' bodies and provide data to improve performance and reduce injuries.
A new sensor developed by ORNL can detect chlorinated hydrocarbons in water with high accuracy and low cost, reducing the need for lengthy laboratory testing. The system combines membrane extraction and ion mobility analysis to provide a single, compact device for on-site monitoring of groundwater contaminants.
Dr. Rashid Zia's cutting-edge research aims to enhance higher order emission processes in lanthanide ions, improving Air Force mission and commercial technologies. His work has the potential to impact industries such as color television, fluorescent lighting, and solid-state laser systems.
Scientists found that a vital region of cadherin-23, a protein in the inner ear, is critical to both hearing and inherited deafness. The research revealed that calcium ions play a crucial role in holding the protein together, and mutations that weaken this bond can cause deafness.
Researchers at Scripps Research Institute synthesized a new molecular switch that can turn itself on and off in response to metallic ions. The 'Ouroborand' molecule, named after the mythical lizard, has potential applications in detecting metals, toxins, and pollutants.
Scientists at Argonne National Laboratory have achieved a significant breakthrough in charge breeding, reaching an unprecedented 11.9% ionization efficiency with metallic particles of rubidium. This achievement surpasses the previous metal record of 6.5% and paves the way for further improvements in efficiency.
Physicists at Harvard University create an atomic-scale black hole by accelerating cold rubidium atoms towards a charged carbon nanotube. The experiment demonstrates the merging of cold-atom and nanoscale science, opening doors to new applications in materials and electronics.
Physicists at NIST create a device that can trap dozens of ions with versatile control, advancing the quest for practical quantum computers. The racetrack ion trap features 150 work zones and can be scaled up for mass fabrication.
Researchers at the University of Innsbruck successfully created a single-atom laser, demonstrating both classical and quantum mechanical properties. The experiment showed that by tuning the coupling between the atom and cavity mode, stimulated emission could be achieved despite the atom's weak amplification ability.
Researchers at MIT and Korea have developed a new approach to desalination called ion concentration polarization that can remove contaminants, viruses, and bacteria while producing fresh water. The system is small, portable, and efficient, making it suitable for disaster sites or remote locations.
A team of physicists at the University of Innsbruck successfully demonstrates a quantum walk in trapped ions, with up to 23 steps. This process differs from classical random walks, allowing quantum particles to spread faster and potentially aiding in understanding natural phenomena like energy transport in plants.
A study presented at the American Academy of Orthopaedic Surgeons meeting found correlations between maternal and infant cobalt and chromium levels in patients with metal-on-metal hip implants. Elevated ion levels were detected in infants, suggesting the placenta modulates metal ion transfer to the fetus.
A study by researchers at Rush University Medical Center found elevated levels of cobalt and chromium in the offspring of mothers with metal-on-metal hip implants. The levels were significantly higher than those in a control group, suggesting that metal ions can be transferred from mother to fetus.
An international team of scientists has discovered the most massive antinucleus ever detected at RHIC's STAR detector, containing an antiproton, antineutron, and anti-Lambda particle. The findings have significant implications for models of neutron stars and may help elucidate fundamental asymmetries in the early universe.
A team of international researchers led by Kent State University's Declan Keane and Jinhui Chen discovered the most massive antinucleus to date, containing an antiproton, antineutron, and anti-Lambda particle. The finding opens new dimensions in physics research, particularly in addressing the asymmetry between matter and antimatter.
Researchers funded by the Air Force Office of Scientific Research are developing mini-thrusters that could enable small satellites to perform complex tasks like planetary searches. The technology also has potential applications in other areas, such as etching semiconductors and fabricating computer chips.
Physicists at UW-Madison created an atomic circuit that may help quantum computing become a reality by exerting control over two atoms for a short period. The achievement uses neutral atoms to create a controlled-NOT gate, a basic type of circuit essential for any quantum computer.
Researchers at CU-Boulder's Brookhaven National Laboratory collaboration used RHIC to create a 'quark-gluon plasma' with temperatures hotter than supernova explosions, recreating Big Bang conditions. The team aims to study the universe's first microseconds after the Big Bang.
Researchers at GSI Helmholtz Centre for Heavy Ion Research developed an ion trap device that measures atomic mass with unprecedented accuracy, enabling the discovery of long-lived elements on islands of stability. The team successfully trapped atoms of element 102, nobelium, and measured its atomic mass with a 0.000005% uncertainty.
NIST's new aluminum-based quantum logic clock outperforms previous mercury atom clocks by more than twice its precision, achieving accuracy within 17 decimal places. The enhanced logic clock uses a different type of partner ion to improve efficiency and sets the stage for future time standards.
A team of Florida State University researchers has developed a way to measure the levels of zinc ions in biological samples using fluorescence microscopy. This technique could lead to better understanding of zinc's role in various physiological processes, including cell division, DNA synthesis, and immune function.
Researchers have found remnants of high-temperature fireballs in two supernova remnants, revealing a new type of supernova remnant that was heated immediately after the explosion. The discovery was made possible by the sensitivity of the Suzaku satellite.
Researchers at Arizona State University use single-walled carbon nanotubes to accelerate DNA sequencing, detecting sharp spikes in electrical activity during DNA translocation. The technique has potential to speed up sequencing by thousands of times while reducing costs.
The Naval Research Laboratory's Ion Tiger has achieved a 26-hour flight duration, exceeding its previous record of 23 hours and 17 minutes. The fuel cell system provides reliable, quiet operation and extremely high efficiency, paving the way for tactical flights and extended flight times.
Researchers have developed two prototype devices to combat drug-resistant bacteria like MRSA. One device can disinfect human skin safely and quickly, while another can target infested chronic wounds for quicker healing.
Norbert Koster and colleagues have developed a way to sterilize medical tools by sealing them in vacuum bags and then using electromagnetic fields to remotely ignite plasma inside the bag, killing bacteria and viruses. This technique could replace traditional autoclave methods for certain instruments.
Researchers at the University of Michigan have developed hybrid molecules that can regulate copper-induced amyloid-beta aggregation, disrupting clump formation and breaking up existing clumps. The new compounds also hold promise in treating Alzheimer's disease and may be able to cross the blood-brain barrier.
The world's largest congress on ion therapy brought together leading experts to discuss the latest scientific and clinical developments in radiation therapy. The meeting marked a significant milestone in the technology and clinical application of ion radiation, with over 70,000 patients worldwide treated so far.
Researchers propose a solution to the crucial problem of ensuring reliable radio communication between Mars and Earth during solar alignments. A pair of communication relay satellites in B-orbits equipped with electric ion propulsion can 'hover' over points leading and trailing Mars' orbit, providing full-time communications.
Scientists at Lawrence Berkeley National Laboratory's Accelerator and Fusion Research Division are making progress with their Neutralized Drift Compression Experiment-II (NDCX-II) accelerator, a specialized user facility designed to study warm dense matter. The NDCX-II can deliver high currents in short pulses of moderate energy, heati...
The Ion Tiger fuel cell unmanned air vehicle has achieved an unprecedented 23-hour flight duration, making it a significant milestone in electric UAV technology. The aircraft's 550-Watt fuel cell system provides 7 times the energy of equivalent batteries, enabling long-endurance missions with reduced noise and signature.
Researchers at Berkeley Lab independently confirmed the production of two individual nuclei of element 114, each with 114 protons but different numbers of neutrons. The discovery removes doubts about the validity of previous claims and paves the way for further exploration of superheavy elements.
Tom Smith is experimenting with synthesizing liquid salts into a gel to create a new material that confines charge-carrying ions in a gelled, pseudo-liquid state. The goal is to improve conductivity in electrochemical devices at nanoscopic dimensions.
Researchers have discovered that highly charged tungsten ions can emit intense light in the extreme ultraviolet spectrum, similar to sodium atoms. This finding provides a promising alternative for diagnosing fusion reactor conditions, such as temperature and density.
Brown University researchers have discovered that yttrium and nickel, two metal catalysts used to form carbon nanotubes, interfere with critical signaling transactions in neurons. Removing these metals can lead to the development of safe treatments for neurodegenerative diseases such as epilepsy, Parkinson's disease, and paralysis.
Researchers developed an ultra-thin material with precise silver dose that kills 99.9999% bacteria without damaging cells needed for healing. The new approach is more targeted and controlled than current wound dressings.
A new experimental atomic clock using ytterbium atoms has achieved accuracy comparable to the nation's civilian time standard, while ongoing comparisons with other clocks will help determine the most accurate option for future time and frequency standards. This development supports advancements in technologies such as high data rate te...
Biophysicists at TUM develop a new technique to observe calmodulin in action, allowing them to study its binding sequences and regulate its target proteins. The results reveal new insights into the protein's hierarchy of folding and unbinding events.
Physicists at NIST demonstrate sustained, reliable information processing operations on ions, overcoming hurdles in scaling up ion-trapping technology. They successfully performed a combined sequence of five quantum logic operations and ten transport operations while maintaining qubit data integrity.
Researchers at Caltech have created a nanoscale mass spectrometer that can instantly measure the mass of an individual molecule. The device uses tiny nanoelectromechanical system (NEMS) resonators to detect changes in vibration frequency, allowing for precise mass determination.