Ions Current Events

Ions Current Events, Ions News Articles.
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'Ion billiards' cue novel material synthesis method
A team of Hokkaido University researchers has developed a novel material synthesis method called proton-driven ion introduction (PDII) which utilizes a phenomenon similar to 'ion billiards.' The new method could pave the way for creating numerous new materials, thus drastically advancing materials sciences. (2017-11-16)

Measurements reveal a two-step energy flow process in Earth's magnetosphere
Scientists have obtained in situ measurements of Earth's magnetosphere, demonstrating a phenomenon that's long been thought to happen but not yet directly been shown: energy is transferred from hydrogen ions to plasma waves, and then from the waves to helium ions. (2018-09-06)

New research findings could lead to safer and more powerful lithium-ion batteries
Virginia Commonwealth University researchers are working to improve conductivity and safety in the batteries, which are used to power many electronic devices around the world, including laptops, artificial hearts and cell phones. (2017-10-27)

How ion adsorption affects biological membranes' functions
In a new study published in EPJ E, Izabela Dobrzy?ska from the University of Bia?ystok, Poland, develops a mathematical model describing the electrical properties of biological membranes when ions such as calcium, barium and strontium adsorb onto them at different pH levels. These factors need to be taken into account when studying the diverse phenomena that occur at the lipid membrane in living cells, such as ion transport mechanisms. (2019-01-28)

Ions in molten salts can go 'against the flow'
In a new article published in the scientific journal Communications Chemistry, a research group at Uppsala University show, using computer simulations, that ions do not always behave as expected. In their research on molten salts, they were able to see that, in some cases, the ions in the salt mixture they were studying affect one another so much that they may even move in the ''wrong'' direction - that is, towards an electrode with the same charge. (2021-01-27)

The interplay of dancing electrons
Negative ions play an important role in everything from how our bodies function to the structure of the universe. Scientists from the University of Gothenburg, Sweden, have now developed a new method that makes it possible to study how the electrons in negative ions interact in, which is important in, for example, superconductors and in radiocarbon dating. (2011-11-29)

High-energy ions' movement affected by silicon crystal periodicity
The thinner the silicon crystal, the easier it is to manipulate the trajectories of very high-energy ions in particle accelerators. Further applications include materials analysis, semiconductor doping and beam transport in large particle accelerators. All of these rely on our understanding of how positively-charged high-energy particles move through crystals. This process, called ion channelling, is the focus of a new paper published in EPJ B by Mallikarjuna Motapothula and Mark Breese working at the National University of Singapore. (2018-03-22)

Scientists from Bangalore and Mainz develop new methods for cooling of ions
Among the most important techniques developed in atomic physics over the past few years are methods that enable the storage and cooling of atoms and ions at temperatures just above absolute zero. Scientists from Bangalore and Mainz have now demonstrated in an experiment that captured ions can also be cooled through contact with cold atoms and may thus be stored in so-called ion traps in a stable condition for longer periods of time. (2012-11-26)

Electrons get confused
Scientists from Helmholtz-Zentrum Berlin observed exotic behavior from beryllium oxide (BeO) when they bombarded it with high-speed heavy ions: after being shot in this way, the electrons in the BeO appeared (2010-11-03)

How strongly does tissue decelerate the therapeutic heavy ion beam?
Cancer treatment with heavy ion irradiation: Scientists of the Physikalisch-Technische Bundesanstalt in Germany have established an experiment for the more exact determination of the stopping power of tissue for carbon ions in the therapeutically relevant area which is so far unique worldwide. This can contribute to clearly improving the dosing for cancer therapy with carbon ions. (2014-07-15)

NIST's speedy ions could add zip to quantum computers
Take that, sports cars! Physicists at NIST can accelerate their beryllium ions from zero to 100 miles per hour and stop them in just a few microseconds. NIST physicists think their zippy ions may be useful in future quantum computers. (2012-08-13)

Race at the edge of the Sun: Ions are faster than atoms
Ions move faster than atoms in the gas streams of a solar prominence. Scientists at the University of Göttingen, the Institut d'Astrophysique in Paris and the Istituto Ricerche Solari Locarno have observed this. The results of the study were published in The Astrophysical Journal. (2019-03-25)

Sodium MRI gives new insights into detecting osteoarthritis, NYU researchers find
Researchers at New York University have developed an innovative way to look at the development of osteoarthritis in the knee joint -- one that relies on the examination of sodium ions in cartilage. (2010-08-27)

New electrode for ion concentration analysis
Researchers at the Ruhr-Universität Bochum have developed a new electrode for analyzing lithium ion concentrations. Unlike traditional systems, it could be manufactured in a small format at low costs. The key is the material lithium-iron-phosphate, which is also utilized in lithium ion batteries. The operating principle could be applied to the analysis of other ions, such as are necessary for blood analyses and industrial tests. The findings are reported in 'Angewandte Chemie International Edition.' (2016-03-15)

Paying peanuts for clean water
Peanut husks, one of the biggest food industry waste products, could be used to extract environmentally-damaging copper ions from waste water, according to researchers in Turkey. Writing in the Inderscience publication the International Journal of Environment and Pollution, the team describes how this readily available waste material can be used to extract toxic copper ions from waste water. (2007-11-08)

OSA student members to gather in Moscow for IONS 2010
IONS will be hosting IONS-8 in Moscow, Russia, June 21-25 at the N.E. Bauman Moscow State Technical University and the International Laser Center of M.V. Lomonosov Moscow State University. IONS-8 features technical and professional development programming for students in the field of optics and photonics and is being organized by OSA student chapter members at Moscow State and Bauman State Technical Universities in Russia. The Optical Society is a co-sponsor of the event. (2010-06-21)

Creating smaller, and more powerful, integrated circuits
Researchers with the University of Houston Cullen College of Engineering are developing technology to knock single atoms off a silicon wafer without disturbing atoms of other materials nearby. (2013-10-30)

Improving tumor radiation therapy: When basic ions break DNA down
Scientists now have a better understanding of how short DNA strands decompose in microseconds. A European team found new fragmentation pathways that occur universally when DNA strands are exposed to metal ions from a family of alkaline and alkaline earth elements. These ions tend to replace protons in the DNA backbone and at the same time induce a reactive conformation leading more readily to fragmentation. These are findings published in a study in EPJ D. (2014-07-16)

Bleach-induced transformation for humidity-durable air filters
A molecule-trapping material that normally degrades in water remains stable after two years of humidity exposure when treated with a common skin bleach. (2019-06-26)

Ion adsorption matter in biology
Biological membranes are mainly composed of lipid bilayers. Gaining a better understanding of adsorption of solution ions onto lipid membranes helps clarify functional processes in biological cells. A new study, published in EPJ E, provides a quantitative description of the equilibria between lipid membranes and surrounding solution ions. In addition to shedding some light on biological processes, these results could also have implications for, among other things, the future development of medical diagnostics. (2014-10-30)

Penn researchers explain the mechanics behind the delayed effects of brain trauma; findings may chart paths to therapeutic relief
Researchers at the University of Pennsylvania Medical Center have determined how calcium ions fill neurons following head trauma, causing long-term memory dysfunction. They have found that a rapid flow of sodium ions through damaged sodium channels triggers the calcium influx. Their study also suggests a possible course of therapeutic treatment. (2001-03-27)

Lighter gas reduces damage to optics in extreme ultraviolet lithography
Researchers at the University of Illinois have discovered a way to generate light and reduce damage in a leading candidate for next-generation microelectronics lithography. The technique could help pack more power into smaller computer chips. (2007-09-12)

Li-ions transport across electrolytes and SEI like beads passing through a Galton Board
Covalent organic framework (COF) film coating on a commercial polypropylene separator is applied as an ion redistributor to eliminate Li dendrites, leading to a high Li-ion transference number of 0.77±0.01. The transport of Li-ions across the COF film can be considered to be analogous to beads passing through a Galton Board. (2020-07-20)

How lactoferrin clamps down on free roaming iron ions to stop nefarious effects on cells
What prevents our cells being damaged due to overexposure to iron ions is a protein called lactoferrin, known for its ability to bind tightly to such ions. In a new study published in EPJ E, Lilia Anghel from the Institute of Chemistry in Chisinau, Republic of Moldova, and research collaborators use combined experimental and molecular dynamics simulationto study the changes in the structure of lactoferrin as it binds to iron ions. (2018-09-20)

Electron-gun simulations explain the mechanisms of high-energy cosmic rays
A new study published in EPJ D provides a rudimentary model for simulating cosmic rays' collisions with planets by looking at the model of electrons detached from a negative ion using photons. In this work, Chinese physicists have for the first time demonstrated that they can control the dynamics of negative ion detachment via photons, or photodetachment, on a moving surface. (2019-02-06)

Droplet explosion by shock waves, relevant to nuclear medicine
In a study published in EPJ D, Eugene Surdutovich from Oakland University, Rochester, Michigan, USA and colleagues have examined the possibility of observing the multi-fragmentation of small droplets due to shock waves initiated by ions that passed through them. The discovery of ion-induced shock waves will significantly affect our understanding of how radiation damage occurs in biomolecules due to ions. (2017-11-22)

The ryanodine receptor: Calcium channel in muscle cells
Scientists decode the 3-D structure of the calcium channel with unprecedented accuracy. (2014-12-02)

X marks the spot: Ions coldly go through NIST trap junction
NIST physicists have demonstrated a new ion trap that enables ions to go through an intersection at temperatures ten million times cooler than prior similar trips. The demonstration is a step toward scaling up trap technology to build a large-scale quantum computer using ions. (2009-04-08)

Doubly-excited electrons reach new energy states
Sabyasachi Kar from the Harbin Institute of Technology, China, and Yew Kam Ho from the Academia Sinica, Taipei, Taiwan, have now characterised the higher energy levels reached by electrons in resonance in three-particle systems, which are too complex to be described using simple equations. This theoretical model, published in a recent study in EPJ D, is intended to offer guidance for experimentalists interested in observing these resonant structures in positronium ions. (2018-11-13)

Compressive fluctuations heat ions in space plasma
New simulations carried out in part on the ATERUI II supercomputer in Japan have found that the reason ions exist at higher temperatures than electrons in space plasma is because they are better able to absorb energy from compressive turbulent fluctuations in the plasma. These finding have important implications for understanding observations of various astronomical objects such as the images of the accretion disk and shadow of the M87 supermassive black hole. (2020-12-18)

Multi-state switchable stationary phase opens new doors in chiral separation
A team including researchers from Kanazawa University demonstrated HPLC separation of enantiomers using an optically active poly(phenylacetylene) derivative as a chiral stationary phase. The helical conformation of the polymer was altered from a mixed state to left- or right-handed chiral conformations by introducing Na+ or Cs+ ions, respectively, producing a switchable system that offers three different modes of recognition. It is hoped that the system will contribute to the continued development of chiral separation. (2019-07-31)

Pumping iron: A hydrogel actuator with mussel tone
Using iron ions and chemistry found in the adhesive proteins of a certain mollusk, Bruce P. Lee of Michigan Technological University has developed a hydrogel actuator that moves when its pH is raised. (2014-03-05)

NIST demonstrates better memory with quantum computer bits
Physicists at the National Institute of Standards and Technology (NIST) have used charged atoms (ions) to demonstrate a quantum physics version of computer memory lasting longer than 10 seconds -- more than 100,000 times longer than in previous experiments on the same ions. The advance improves prospects for making practical, reliable quantum computers. Such devices could break today's best encryption systems, accelerate database searching or simulate complex biological systems to help design new drugs. (2005-08-10)

Nanoparticles in our environment may have more harmful effects than we think
Researchers warn that a combination of nanoparticles and contaminants may form a cocktail that is harmful to our cells. In their study, 72 pct. of cells died after exposure to a cocktail of nano-silver and cadmium ions. (2018-08-20)

Pulp friction cleans up 'Brockovich' chemical
A byproduct of the manufacture of pulp using the sulfite process for making paper, sodium lignosulfonate, can be used to immobilize and soak up toxic chromium compounds from soil and water, according to research published in the International Journal of Innovation and Sustainable Development. (2013-10-10)

Clarifying how lithium ions ferry around in rechargeable batteries
IBS scientists observe the real-time ultrafast bonding of lithium ions with the solvents, in the same process that happens during charging and discharging of lithium batteries, and conclude that a new theory is needed. (2017-03-27)

Next-generation fluorescent and LED lighting thanks to new phosphor?
Researchers from KU Leuven (Belgium), the University of Strasbourg, and CNRS have discovered a new phosphor that could make next-generation fluorescent and LED lighting even cheaper and more efficient. The team used highly luminescent clusters of silver atoms and the porous framework of minerals known as zeolites. (2016-06-23)

Synthetic nanochannels for iodide transport
Iodide channels have the potential to treat thyroid diseases and some types of cancers. (2017-06-08)

ORNL researchers analyze material with 'colossal ionic conductivity'
A new material characterized at the US Department of Energy's Oak Ridge National Laboratory could open a pathway toward more efficient fuel cells. (2008-07-31)

A quantum mechanical 'tune up' for better measurement
By exploiting the weird quantum behavior of atoms, physicists at the Commerce Department's National Institute of Standards and Technology (NIST) have demonstrated a new technique that someday could be used to save weeks of measurements needed to operate ultraprecise atomic clocks. The technique also could be used to improve the precision of other measurement processes such as spectroscopy. (2004-06-04)

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