Physics News

Scientists Synthesize New Crystalline Form of Silicon

Visualization of the structure of 4H-Si viewed perpendicular to the hexagonal axis. A transmission electron micrograph showing the stacking sequence is displayed in the background. Image credit: Thomas Shiell / Timothy Strobel.
Jun 8, 2021 by News Staff

A team of researchers from the Carnegie Institution for Science, RMIT University and the Australian National University has synthesized a new form of silicon with a hexagonal structure — 4H hexagonal silicon (4H-Si) — using a recently-discovered single-crystalline allotrope of silicon, Si24. Visualization of the structure of 4H-Si viewed perpendicular to the hexagonal axis. A transmission electron micrograph showing the stacking sequence...

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This image shows an electron ptychographic reconstruction of a praseodymium orthoscandate crystal, zoomed in 100 million times. Image credit: Chen et al., doi: 10.1126/science.abg2533.

Physicists Capture Ultraprecise Images of Atoms

Jun 8, 2021 by News Staff

Two major problems that limit the resolution and interpretation of electron microscopy images are lens aberrations and multiple scattering. Cornell University’s...

The acousto-electric chip includes a radio-frequency amplifier, circulator and filter; SEM image shows details of the amplifier. Image credit: Bret Latter / Matt Eichenfield.

Researchers Create World’s Smallest Acoustic Amplifier

Jun 7, 2021 by News Staff

An acoustic amplifier developed by Sandia National Laboratories researchers measures 0.5 mm2 (0.0008 square inches), and is more than 10 times more effective...

Speckle-MAIN imaging of Cos-7 cells: (a) diffraction-limited image; scale bar - 20 μm; (b) reconstructed speckle-MAIN image; (c, d) zoom-in view of the white box area in (a); (e, f) zoom-in view of the white box area in (b); scale bar: 2 μm. Image credit: Lee et al., doi: 10.1038/s41467-021-21835-8.

Hyperbolic Metamaterial Turns Conventional Light Microscope into Super-Resolution Imager

Jun 1, 2021 by News Staff

The speckle-MAIN technology developed by University of California, San Diego researchers involves a specially engineered material that shortens the wavelength...

Visualization of an expanding drop of quark-gluon plasma. Image credit: Javier Orjuela Koop, University of Colorado, Boulder.

Particles in Quark-Gluon Plasma Move in the Same Way as in Water, Physicists Discover

May 27, 2021 by News Staff

Quark-gluon plasma is a state of dense matter with the quarks and gluons being its constituents. Soon after the Big Bang the matter was just in such a...

Two photons collide in this artist’s rendering of the pion experiment; the result is a charge-neutral pion shown as a green sphere; just 83 attoseconds later, the pion disintegrates and emits two photons, shown as purple spheres. Image credit: Jefferson Lab.

Physicists Precisely Measure Lifetime of Neutral Pion

May 27, 2021 by News Staff

Neutral pions (π0) have a lifetime of around 80 attoseconds, decaying into two photons. In new research, an international team of physicists has measured...

Enhanced α-particle preformation in 214U and 216U. Image credit: Zhang et al., doi: 10.1103/PhysRevLett.126.152502.

Physicists Discover New Uranium Isotope: Uranium-214

May 14, 2021 by Enrico de Lazaro

Physicists at the Heavy Ion Research Facility in China have observed the lightest uranium isotope to date, uranium-214 (214U), and precisely measured the...

Zhang et al. demonstrate the long-sought transition between atomic and molecular condensates, the bosonic analogue of the crossover from a Bose-Einstein condensate to a Bardeen-Cooper-Schrieffer superfluid in a Fermi gas. Image credit: Zhang et al., doi: 10.1038/s41586-021-03443-0.

Physicists Turn Atomic Bose-Einstein Condensate into Molecular One

Apr 29, 2021 by News Staff

Molecular quantum gases (that is, ultracold and dense molecular gases) have many potential applications, including quantum control of chemical reactions,...

An artist’s impression of the Roque 12 binary system in the Pleiades cluster. Image credit: Sci-News.com / NASA / ESA / AURA / Caltech.

Exoplanets and Brown Dwarfs Could Be Used as Detectors of Light Dark Matter, Physicists Say

Apr 26, 2021 by News Staff

Dark matter with masses below 1 GeV can scatter, become captured, deposit annihilation energy, and increase the heat flow within extrasolar gas giants,...

Siraj & Loeb explore the possibility that accretion flares resulting from the tidal disruption of small Oort Cloud bodies by a putative primordial black hole could power an observable optical signal that could be searched for with the upcoming Vera C. Rubin Observatory Legacy Survey of Space and Time. Image credit: Sci-News.com / Zdeněk Bardon / ESO.

Physicists Use Rapidly-Spinning Black Holes to Look for Dark Matter

Apr 14, 2021 by News Staff

Ultralight bosons — hypothetical particles with masses less than a billionth the mass of an electron — could be responsible for the Universe’s...

New Measurements of Muon’s Magnetic Moment Strengthen Evidence of New Physics

Apr 8, 2021 by News Staff

The Standard Model, scientists’ best description of the makeup and behavior of the Universe yet, very precisely predicts the g-factor of a fundamental...

New Exotic Isotope of Fluorine Discovered: Fluorine-13

Apr 5, 2021 by Enrico de Lazaro

A team of U.S. physicists has created a new isotope of fluorine, fluorine-13 (13F), via a charge-exchange reaction between a beam of oxygen-13 (13O) and...

Trapped antihydrogen atoms being cooled. Image credit: Chukman So.

CERN Physicists Cool Antimatter Using Laser Light for First Time

Apr 5, 2021 by News Staff

Physicists from the ALPHA (Antihydrogen Laser Physics Apparatus) Collaboration at CERN have successfully demonstrated laser cooling of antihydrogen, the...

The optical microresonator filled with dye solution (yellow); on the right is a microscope objective used to observe and analyze the light emerging from the resonator. Image credit: Gregor Hübl / University of Bonn.

Physicists Observe New Phase in Quantum Condensate of Light

Apr 2, 2021 by Enrico de Lazaro

Physicists at the University of Bonn have experimentally observed a new, previously unknown phase in the photon Bose-Einstein condensate. The optical microresonator...

Illustration of a tetraquark. Imager credit: CERN / CC BY-SA.

CERN Physicists Discover Four New Tetraquarks

Mar 24, 2021 by News Staff

Physicists from the LHCb Collaboration at CERN’s Large Hadron Collider (LHC) have observed four new exotic particles: Zcs(4000)+, Zcs(4220)+, X(4685),...

The decay of a B0 meson into a K0 and an electron-positron pair in the LHCb detector, which is used for a sensitive test of lepton universality in the Standard Model. Image credit: CERN.

Intriguing New Results from CERN Challenge Standard Model of Particle Physics

Mar 23, 2021 by News Staff

The Standard Model of particle physics currently provides our best description of fundamental particles and their interactions. The new results from CERN’s...

Illustration of the Zcs tetraquark. Image credit: BESIII Collaboration.

Chinese Physicists Observe New Tetraquark

Mar 22, 2021 by News Staff

Physicists from the Beijing Spectrometer (BESIII) Collaboration at the Beijing Electron Positron Collider in China have detected the first candidate for...

View of the tunnel where the TOTEM experiment’s proton detectors are located. Image credit: TOTEM Collaboration.

Particle Physicists Confirm Existence of Odderon

Mar 19, 2021 by News Staff

Physicists from the TOTEM (TOTal cross section, Elastic scattering and diffraction dissociation Measurement) Collaboration at CERN’s Large Hadron Collider...

Blázquez-Salcedo et al. constructed a specific example of a class of traversable wormholes in four space-time dimensions. Image credit: NASA / G. Bacon, STScI.

New Research Explores Possibility of Traveling through Microscopic Wormholes

Mar 16, 2021 by News Staff

The wormholes are theoretical portals through space-time that could create shortcuts for long journeys across our Universe. They have entered modern physics...

Digital art by Les Bossinas, Cortez III Service Corp., 1998.

Faster-Than-Light Travel is Possible, Theoretical Study Suggests

Mar 15, 2021 by News Staff

A new theoretical paper, published in the journal Classical and Quantum Gravity, reignites the debate about the possibility of superluminal (faster-than-light)...

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