Articles tagged with Electrons
Scientists have re-measured a crucial physical constant with unprecedented accuracy, setting a new benchmark for physics research. The result could help explain nuclear fusion in the sun, understand element formation after the Big Bang, and improve particle collisions at CERN.
Researchers at TU Wien have developed a method to manipulate the 'branched flow' of waves, which can be exploited to send waves along specific paths. The technique uses numerical simulations to calculate the optimal wave shape and can be applied to various types of waves, including light, sound, and sonar waves.
Researchers at the University of Tsukuba developed a novel process for generating coherent lattice waves in silicon crystals using ultrashort laser pulses. This breakthrough may lead to the creation of faster and more efficient quantum computers.
Researchers have found a new obstacle to effective accelerator beam pulses by forming 'electrostatic solitary waves' that reduce neutralization. Widening the filament injecting electrons into the beam can improve neutralization rates.
Scientists have developed a method to determine the geometry of electrons in quantum dots, allowing for better control of electron spins. This could lead to the development of smaller information units in future quantum computers.
Scientists have developed a technique to directly observe an isolated quantum system, such as a gas of atoms, with unprecedented spatial resolution. This allows them to obtain details on a scale of tens of nanometers, enabling the calculation of wave function information and its effects.
Scientists at EPFL demonstrate for the first time that it is possible to use light to dynamically twist an individual electron's wave function. This enables the creation of an ultrafast vortex electron beam that can be used to encode and manipulate quantum information, as well as control magnetic materials.
Physicists at Rice University have reported the first direct observation of two-neutrino double electron capture for xenon 124, a process that decays into tellurium 124 with an estimated half-life of 160 trillion years. This discovery puts the half-life closer to 18 sextillion years, challenging our understanding of this isotope.
Researchers at the University of Zurich's XENON1T detector have observed the slowest atom decay ever measured, with a half-life time over a trillion times longer than the age of the universe. This rare process, called double electron capture, was detected for the first time and has implications for understanding dark matter.
Researchers at UCLA designed a device that harnesses the charge from falling snow to create electricity. The snow-based triboelectric nanogenerator can work in remote areas without batteries, providing a continuous power supply for applications such as monitoring winter sports or tracking athletes.
Researchers at University of Cologne create one-dimensional wire to witness behavior of trapped electrons. They discover two sets of standing waves, representing spin density and charge density waves, a phenomenon predicted by Tomonaga-Luttinger liquid theory.
Researchers have discovered that certain classes of chiral crystals can host electrons behaving like slowed down light, with collective behavior mimicking magnetic monopoles. The team found that these crystals can exhibit unique phenomena such as large Fermi arcs and electron spins that collectively behave like magnetic monopoles.
Researchers from the University of Konstanz and partners demonstrate a new technique for in-cell distance determination using RIDME, overcoming limitations of traditional methods such as DEER. This approach provides essential structural information about biomacromolecules under native conditions, enabling analysis without inserting or ...
Physicists at the University of Basel have demonstrated spontaneous spin polarization in a two-dimensional material, molybdenum disulfide. The phenomenon occurs due to interactions between electrons and weak spin-orbit coupling, contradicting a well-known theorem from the 1960s.
Rice physicists propose experiment to measure fractionalization in ultracold atoms, mimicking electrons in quantum materials. Theoretical framework could provide new insights into high-temperature superconductivity and quantum computing.
Purdue researchers have successfully probed interference of quasiparticles using a new device. The device, built with molecular beam epitaxy, overcomes technical challenges to observe quantum mechanical effects. This breakthrough may be key to developing topological qubits and advancing quantum computing.
Researchers at TUM and Max Planck Institute have developed a magnetic field trap to confine positrons for over a second, a breakthrough in studying electron-positron pair plasmas. This achievement has significant implications for plasma physics and astrophysics, including the study of neutron stars and black holes.
Researchers at Princeton University observed exotic electronic properties in kagome magnets, including negative magnetism and flat-band electrons. The study used state-of-the-art scanning tunneling microscopy and spectroscopy to explore the behavior of electrons in a kagome-patterned crystal.
Researchers discover that quarks move more slowly in larger atoms due to short-range correlated pairs, finding a long-sought explanation for the EMC effect. The study uses data from particle accelerator experiments and confirms that larger nuclei contain more such pairs, resulting in slower-moving quarks.
Researchers have found that superconductivity can be explained by applying quantum physics laws and a complex 'Feynman diagram' calculation. The new method enables a better understanding of high-temperature superconductivity.
Researchers have taken snapshots of how C60 carbon molecules react to extremely short pulses of intense infrared light, transforming its shape from round to elongated. The findings may lead to new applications in ultrafast, light-controlled electronics.
Researchers at Okinawa Institute of Science and Technology (OIST) have demonstrated how microwaves interact with matter, enabling the movement of electrons. This breakthrough may help improve quantum computing by controlling electrons with precision, leading to faster and more powerful technologies.
Princeton researchers have demonstrated a new way of making controllable 'quantum wires' in the presence of a magnetic field. They found channels of conducting electrons that form between two quantum states on the surface of a bismuth crystal subjected to a high magnetic field. The current flow in these channels can be turned on and of...
Molecular vibrations in aspirin cause electron motions visible in real time for the first time through x-ray experiments. Electron distributions shift by 10,000 times larger than atomic displacements, demonstrating hybrid modes in crystal structures.
A new scale of electronegativity has been developed, providing a more comprehensive and extensive definition that can predict the approximate charge distribution in different molecules and materials. The new definition averages the binding energy of valence electrons and offers an equation to describe the total energy of an atom.
Researchers at Argonne National Laboratory have adapted a chemical reaction pathway from plant biology to convert water into hydrogen fuel using solar energy. The new process combines two membrane-bound protein complexes, Photosystem I and II, to perform a complete conversion of water molecules to hydrogen and oxygen.
Berkeley Lab researchers discovered a distinct pattern of electron spins within exotic cuprate superconductor Bi-2212, defying traditional theories. The finding could lead to more efficient power transmission and new materials for high-temperature superconductors.
Researchers at TU Wien and China's University of Science and Technology have developed a new method to identify topologically interesting quantum states in materials. By manipulating the geometry of atomic arrangements using light waves, they can reveal clear signatures indicating whether such states exist or not.
Researchers at Kiel University developed a new computer simulations method to accurately describe dynamic properties of warm dense matter. The study provides unique insights into the behavior of electrons under extreme conditions.
Researchers at the University of Malaga have discovered that sulfur atoms can exhibit both donative and repulsive behavior, leading to the creation of more stable and functional organic diradicals. These findings have significant implications for various scientific fields, including chemistry and environmental science.
Researchers create algorithm to predict tunneling ionization rates for complex molecules, potentially controlling electron motion and chemical reactions. This breakthrough enables precise calculations of probabilities and opens up new areas of science and technology applications.
Developed by HZB teams, the photocathodes exhibit high quantum efficiency and stability, crucial for superconducting electron sources. The new process delivers desired performance, with quantum efficiency remaining high even at low temperatures.
Researchers at Penn State have developed a system to manipulate electrons based on their energy and momentum, enabling controlled partitioning of electron flow. This technology could potentially be used to create 'color-coded' roads for electrons, revolutionizing the field of electronics.
Electrical engineers at TU Darmstadt have designed a laser-driven electron accelerator that can be produced on a silicon chip, enabling inexpensive and compact particle accelerators. The design uses an alternating-phase focusing method to focus electrons in a narrow channel, promising applications in industry and medicine.
Researchers discovered a two-dimensional material that can become a magnetic topological insulator even without an external magnetic field. The material, chromium triiodide (CrI3), exhibits collective spin excitations called magnons, which behave similarly to photon waves.
Physicists have characterised higher energy levels reached by electrons in resonance with positronium ions, a complex three-particle system. The new model provides guidance for experimentalists to observe these resonant structures, potentially leading to breakthroughs in atomic and nuclear physics.
Researchers at Yale, Harvard, and Northwestern universities used a unique process to fire a beam of molecules into lasers, revealing the electron's round, negative charge. The findings support the Standard Model of particle physics and challenge alternative theories.
Researchers at Northwestern University have confirmed that an electron's charge is perfectly spherical, strengthening the Standard Model of particle physics. The study excluded alternative models that predicted the electron's shape would be asymmetrically squished, potentially revealing unknown heavy particles.
Researchers at the University of Alberta and Quantum Silicon Inc. have developed an atomic ultra-efficient electronics technology, enabling bespoke atomic patterns to control electrons. This innovation simulates neural networks, potentially training AI models more rapidly and accurately.
A team of physicists has achieved a groundbreaking experiment accelerating electrons to high energies using a new method called plasma wakefield acceleration. This technology has the potential to drastically reduce the size and cost of future particle accelerators.
Researchers find that widely-used correction methods are based on a faulty assumption, potentially leading to inaccurate predictions. The team proposes new universal method for prediction that works for the right reasons.
Researchers have developed an ultrafast optical fiber-based electron gun to directly observe and capture atomic motions at surfaces and interfaces. The device uses low-energy electron pulses and a streak camera to achieve subpicosecond temporal resolution, revealing the transition state during chemical processes.
Researchers at the University of Wisconsin-Madison have developed a new fuel cell concept that uses an organic compound called quinone to shuttle electrons and protons, increasing energy efficiency by 100 times compared to previous designs. The design also reduces costs by using lower-cost metals like cobalt as catalysts.
Researchers at Vienna University of Technology have successfully measured the duration of the photoelectric effect, a crucial process in quantum physics. The results reveal that different quantum jumps take varying amounts of time, ranging from 100 to 45 attoseconds for electrons from tungsten atoms.
Scientists have developed a way to wrap photocathodes in graphene to prevent degradation and extend their lifetimes. The thin layer of graphene provides insulation from air without hampering charge mobility or quantum efficiency.
Researchers from Konstanz and Munich have successfully directed and controlled ultrashort electron pulses using laser light cycles, enabling precise material studies in the femtosecond and attosecond range. This achievement has significant implications for ultrafast materials research and the production of intense X-ray flashes.
Researchers used ultracold lithium atoms to verify a theory predicting collective behavior in one-dimensional wires. The study confirmed the predicted speed of charge waves and spin waves as a function of interaction strength, setting the stage for further investigation into strongly correlated electron physics.
A Princeton-led study reveals that electrons congregate in one valley of bismuth crystals, creating a type of electricity called ferroelectricity. This emergent behavior has the potential to enhance modern electronic devices and inspire new technologies.
A study at Thomas Jefferson National Accelerator Facility found that protons in neutron-rich nuclei have higher momentum than neutrons due to short-range correlations, which may impact neutron star dynamics. The research, published in Nature, confirms earlier hints and quantifies the effect for the first time.
Researchers have developed a model explaining electron interactions past the Coulomb threshold in all Dirac materials, enabling better understanding of long-range interactions and potential breakthroughs in low heat dissipation devices. This discovery could lead to faster processor performance with reduced power leakage.
Researchers have discovered that nanoribbons can trap individual localized electrons, potentially enabling new quantum materials with unique electronic and magnetic properties. The discovery was made by combining theoretical predictions with experimental synthesis, using topological insulators as a starting point.
Researchers propose a refined approximation of the photo-excitation equation that describes the effect of photons on rhodopsin protein in eyes. The study has implications for other molecules, like azobenzene, and demonstrates tunnelling process to populate excited states.
Physicists discovered that charge density waves (CDW) compete with superconductivity for conduction electrons, but also assist through phonon coupling. At a certain threshold level of disorder, CDW disappears and superconducting transition temperature is reduced.
Researchers have developed a theory to create electron flashes within zeptosecond timeframes, potentially increasing nuclear reaction energy yield. This breakthrough could advance fields like spectroscopy and quantum information processing.
A new study investigates the extremely rapid changes in electron density in specific sites of the caffeine molecule using ultra-fast laser pulses. The results show that positive charge migration along a molecular backbone depends on the timing and interplay of ionisation channels.
The team's device can produce one billion electrons per second and uses quantum mechanics to control them. This breakthrough paves the way for future quantum information processing applications, including defence, cybersecurity and encryption.
Researchers at Virginia Commonwealth University have created a new approach to synthesize metal-based superatoms that can effectively move charges while maintaining structural stability. This innovation could lead to the development of more efficient batteries and better semiconductors, essential components of computerized devices.
Researchers have developed a method to analyze electron flow in graphene nanoribbons using a simplified physics model. This approach uses a matching method to calculate transmission properties of electrons through the junction.
Researchers have developed a new method to predict molecular conductivity by calculating interactions between pairs of electrons, resulting in improved accuracy and reduced computational costs. The approach has been shown to outperform traditional models by one-to-two orders of magnitude.
Researchers at Kiel University developed a novel computer simulation technique to predict electron behavior under extreme conditions, providing the first exact data on thermodynamic properties. The results allow for benchmarking and improving previous models, paving the way for advancements in materials science and quantum physics.