ScienceDaily: Physics News
- Wigner crystal — not Mott insulator — in 'magic-angle' graphene
Recently, scientists created a stir in the field of condensed matter physics when they showed that two sheets of graphene twisted at specific angles display two emergent phases of matter. After a care …
- Shedding light on — and through — 2D materials
Scientists use a computational method to calculate the optical properties of two-dimensional materials. Their work promises to simplify the process of identifying the right materials for next-generati …
- Quantum computing: A new way to count qubits
Researchers have developed a new technique for measuring the state of quantum bits, or qubits, in a quantum computer.
- Smaller, faster and more efficient modulator sets to revolutionize optoelectronic industry
A research team has successfully fabricated a tiny on-chip lithium niobate modulator, an essential component for the optoelectronic industry. The modulator is smaller, more efficient with faster data …
- Neutrons produce first direct 3-D maps of water during cell membrane fusion
New 3-D maps of water distribution during cellular membrane fusion are accelerating scientific understanding of cell development, which could lead to new treatments for diseases associated with cell f …
- Graphene bilayer provides efficient transport and control of spins
Physicists have built an optimized bilayer graphene device which displays both long spin lifetimes and electrically controllable spin-lifetime anisotropy. It has the potential for practical applicatio …
- New observations to understand the phase transition in quantum chromodynamics
In a new article, scientists present an analysis of a series of experiments and shed light on the nature of the phase transition after the Big Bang about 13.7 billion years ago.
- Quantum anomaly: Breaking a classical symmetry with ultracold atoms
A new study of ultracold atomic gases finds a quantum anomaly: strongly interacting particles breaking classical symmetry in a 2-D Fermi gas.
- Lighting it up: A new non-toxic, cheap, and stable blue photoluminescent material
Scientists have designed a novel photoluminescent material that is cheap to fabricate, does not use toxic starting materials, and is very stable, enhancing our understanding of the quantic nature of p …
- How long does a quantum jump take?
Quantum jumps are usually regarded to be instantaneous. However, new measurement methods are so precise that it has now become possible to observe such a process and to measure its duration precisely …
- New nanoparticle superstructures made from pyramid-shaped building blocks
In research that may help bridge the divide between the nano and the macro, chemists have used pyramid-shaped nanoparticles to create what might be the most complex macroscale superstructure ever asse …
- Engineers develop first method for controlling nanomotors
Engineers have developed the world's first method for controlling the motion of nanomotors with simple visible light as the stimulus.
- Two quantum dots are better than one: Using one dot to sense changes in another
Researchers developed the first device that can detect single-electron events in a self-assembled quantum dot in real time. The device detects the single-electron tunneling events of one quantum dot a …
- First particle tracks seen in prototype for international neutrino experiment
The largest liquid-argon neutrino detector in the world has just recorded its first particle tracks, signaling the start of a new chapter in the story of the international Deep Underground Neutrino Ex …
- Searching for errors in the quantum world
The theory of quantum mechanics is well supported by experiments. Now, however, a thought experiment by physicists yields unexpected contradictions. These findings raise some fundamental questions — …
- Extremely small and fast: Laser ignites hot plasma
When light pulses from an extremely powerful laser system are fired onto material samples, the electric field of the light rips the electrons off the atomic nuclei. A plasma is created. The electrons …
- Nuclear pasta, the hardest known substance in the universe
A team of scientists has calculated the strength of the material deep inside the crust of neutron stars and found it to be the strongest known material in the universe.
- Scientists use artificial neural networks to predict new stable materials
Artificial neural networks — algorithms inspired by connections in the brain — have 'learned' to perform a variety of tasks, from pedestrian detection in self-driving cars, to analyzing me …
- After 150 years, a breakthrough in understanding the conversion of carbon dioxide to electrofuels
Using surface-enhanced Raman spectroscopy, engineers have observed how carbon dioxide is activated at the electrode-electrolyte interface. Their finding shifts the catalyst design from trial-and-error …
- Compact fiber laser may enable wearable tech and better endoscopes
A new photoacoustic imaging technology combines laser light and ultrasound to image biological tissue.
- New world record magnetic field
Researchers have recorded the highest magnetic field ever achieved indoors — a discovery that may open doors for materials science and fusion energy research.
- Graphene helps protect photocathodes for physics experiments
Researchers have used thin sheets of graphene to prevent photocathode materials from interacting with air, which increases their lifetimes. Photocathodes are used to convert light to electricity in ac …
- Tech streamlines computational science projects
A new research team has continuously updated a workflow management system they first developed in 2010 to help computational scientists develop software, visualize data, and solve problems, saving tim …
- New photonic chip promises more robust quantum computers
Scientists have developed a topological photonic chip to process quantum information, promising a more robust option for scalable quantum computers. The research team has for the first time demonstrat …
- 'Optical rocket' created with intense laser light
An experiment has demonstrated how the application of intense light boosts electrons to their highest attainable speeds.
- Tiny camera lens may help link quantum computers to network
Scientists have invented a tiny camera lens, which may lead to a device that links quantum computers to an optical fiber network.
- The next phase: Using neural networks to identify gas-phase molecules
Scientists have developed a neural network that can identify the structure of molecules in the gas phase, offering a novel technique for national security and pharmaceutical applications.
- New devices could reduce excess heat in computers
Antiferromagnets could make it possible to achieve computing speeds much faster than existing devices, new research suggests.
- Quantum-level control of an exotic topological quantum magnet
Physicists have discovered a novel quantum state of matter whose symmetry can be manipulated at will by an external magnetic field. The methods demonstrated in a series of experiments could be useful …
- Enhancing data analysis for large hadron collider
Physicists have created new techniques that deploy machine learning as a means to significantly improve data analysis for the Large Hadron Collider (LHC), the world's most powerful particle accel …
- Bismuth shows novel conducting properties
Scientists have discovered a new class of materials: higher-order topological insulators. Theoretical physicists first predicted the existence of these insulators with conducting properties on the edg …
- A trick of the light
Researchers are using nanoparticles to make photodetectors better able to handle the ultraviolet radiation produced in high-energy physics experiments.
- Novel materials: Probing individual edge states with unprecedented precision
A new technique makes it possible to obtain an individual fingerprint of the current-carrying edge states occurring in novel materials such as topological insulators or 2D materials.
- Separating the sound from the noise in hot plasma fusion
For fusion power plants to be effective, scientists must find a way to trigger the low-to-high confinement transition, associated with zonal flows of plasma. Theoretically, these consist of both a sta …
- Magnetization in small components can now be filmed in the laboratory
Scientists have refined an electron microscope-based technique that makes it possible not only to capture static images of these components but also to film the high-speed switching processes.
- Novel nano material for quantum electronics
An international team has synthesized a novel nano material with electrical and magnetic properties making it suitable for future quantum computers and other applications in electronics.
- Diamond dust enables low-cost, high-efficiency magnetic field detection
Engineers have created a device that dramatically reduces the energy needed to power magnetic field detectors, which could revolutionize how we measure the magnetic fields that flow through our electr …
- Just seven photons can act like billions
A system made of just a handful of particles acts just like larger systems, allowing scientists to study quantum behavior more easily.
- Toward fusion power: Optimal magnetic fields for suppressing instabilities in tokamaks
Scientists have developed a new method for reducing instabilities in fusion plasmas without triggering a fresh problem.
- Researchers resolve a major mystery in 2D material electronics
Researchers have discovered a one-size-fits-all master equation that shall pave the way towards better design of 2D material electronics.
- Solar power: Golden sandwich could make the world more sustainable
Scientists have developed a photoelectrode that can harvest 85 percent of visible light in a 30 nanometers-thin semiconductor layer between gold layers, converting light energy 11 times more efficient …
- Single molecule control for a millionth of a billionth of a second
Physicists have discovered how to manipulate and control individual molecules for a millionth of a billionth of a second, after being intrigued by some seemingly odd results.
- Experiment obtains entanglement of six light waves with a single laser
A new record set by Brazilian researchers can help make quantum computing feasible.
- Scientists 'teleport' a quantum gate
Researchers have demonstrated one of the key steps in building the architecture for modular quantum computers: the 'teleportation' of a quantum gate between two qubits, on demand.
- Could a 'demon' help create a quantum computer?
Physicists have employed a version of Maxwell's demon to reduce entropy in a three-dimensional lattice of super-cooled, laser-trapped atoms — a process that could help speed progress toward crea …
- Probing molecular limit of plasmonics
Researchers are probing the physical limits of excited electronic states called plasmons by studying them in organic molecules with fewer than 50 atoms.
- Heat transfer surprise could lead to thermal transistors
As much as 100 times more heat than predicted by the standard radiation theory can flow between two nanoscale objects, even at bigger-than-nanoscale distances.
- Ultracold atoms used to verify 1963 prediction about 1D electrons
Atomic physicists have verified a key prediction from a 55-year-old theory about one-dimensional electronics that is increasingly relevant thanks to Silicon Valley's inexorable quest for miniatur …
- Peering into private life of atomic clusters — using the world's tiniest test tubes
Researchers have achieved time-resolved imaging of atomic-scale dynamics and chemical transformations promoted by metal nanoclusters.
- A quantum gate between atoms and photons may help in scaling up quantum computers
The quantum computers of the future will be able to perform computations that cannot be done on today's computers. These may likely include the ability to crack the encryption that is currently u …
- Quantum weirdness in 'chicken or egg' paradox
The 'chicken or egg' paradox was first proposed by philosophers in Ancient Greece to describe the problem of determining cause-and-effect. Now, a team of physicists has shown that, as far as …
- Extremely short and specifically-shaped electron pulses for materials studies
Physicists have produced extremely short and specifically-shaped electron pulses for materials studies in the femtosecond and attosecond range.
- Superradiance: Quantum effect detected in tiny diamonds
An atom gives off energy and causes many other atoms in its vicinity to emit light as well. This phenomenon is called 'superradiance'. For the first time, this phenomenon has now bean measur …
- Terahertz spectroscopy enters the single-molecule regime
Researchers showed that long-wavelength terahertz (THz) spectroscopy can detect motion of single molecules, not just molecular ensembles. They used a single-molecule transistor design, where pairs of …
- Cannibalistic materials feed on themselves to grow new nanostructures
Scientists have induced a two-dimensional material to cannibalize itself for atomic 'building blocks' from which stable structures formed. The findings provide insights that may improve desi …
- Using physics to predict crowd behavior
Electrons whizzing around each other and humans crammed together at a political rally don't seem to have much in common, but researchers are connecting the dots. They've developed a highly a …
- Scientists predict superelastic properties in a group of iron-based superconductors
Researchers have computationally predicted a number of unique properties in a group of iron-based superconductors, including room-temperature super-elasticity.
- Watching two-dimensional materials grow
The production of ultra-thin 2D crystals is difficult. In the past, different techniques have yielded quite diverse results, but the reasons for this could not be accurately explained. Thanks to a new …
- Higgs particle's favorite 'daughter' comes home
In a finding that caps years of exploration into the tiny particle known as the Higgs boson, researchers have traced the fifth and most prominent way that the particle decays into other particles. The …
- Nano-imaging of intersubband transitions in few-layer 2-D materials
A study reports on the first observation of intersubband transitions in 2-D materials via scattering scanning near-field optical microscopy.