Physics

Articles from Science Daily Physics News

Energy-efficient accelerator was 50 years in the making

With the introduction of the Cornell-Brookhaven ERL Test Accelerator, scientists are following up on the concept of energy-recovering particle accelerators first introduced by physicist Maury Tigner at Cornell more than 50 years ago.

Most precise measurement of the proton's mass

By means of precision measurements on a single proton, scientists have been able to improve the precision of the measurement of the mass of the proton by a factor of three and also corrected the existing value, finding it is significantly lighter than previously believed.

Vortex photons from electrons in circular motion

A high energy electron in circular/spiral motion radiates vortex photons in the entire wavelength range from the radio-wave to the gamma-rays, researchers have shown theoretically and experimentally. This greatly broadens application spectra of the vortex photons in the field of physical science. Moreover, the finding indicates that vortex photons are ubiquitous in the universe. It paves a way to a completely new research field, natural vortex photon science.

Pulses of electrons manipulate nanomagnets and store information

Skyrmions are a kind of nanomagnet, composed of a spin-correlated ensemble of electrons acting as a topological magnet on certain microscopic surfaces. The precise properties, like spin orientation, of such nanomagnets can store information. But how might you go about moving or manipulating these nanomagnets at will to store the data you want? New research demonstrates such read/write ability using bursts of electrons, encoding topological energy structures robustly enough for potential data storage applications.

Evidence for the Majorana fermion, a particle that's its own antiparticle

In a discovery that concludes an 80-year quest, researchers found evidence of particles that are their own antiparticles. These 'Majorana fermions' could one day help make quantum computers more robust.

Molecular 'pulleys' improve battery performance

Scientists have reported a molecular pulley binder for high-capacity silicon anodes of lithium ion batteries.

Semiliquid chains pulled out of a sea of microparticles

An electrode brought to the surface of a liquid that contains microparticles can be used to pull out surprisingly long chains of particles. Curiously enough, the particles in the chains are held together by a thin layer of liquid that covers them.

The first light atomic nucleus with a second face

To some degree of approximation, atomic nuclei look like spheres which in most cases are distorted to a greater or lesser extent. When the nucleus is excited, its shape may change, but only for an extremely brief moment, after which it returns to its original state. A relatively permanent 'second face' of atomic nuclei has so far only been observed in the most massive elements. In a spectacular experiment, physicists have registered it in a light nucleus.

First direct observation and measurement of ultra-fast moving vortices in superconductors

Researchers have made the first direct visual observation and measurement of ultra-fast vortex dynamics in superconductors. Their technique, detailed in the journal Nature Communications, could contribute to the development of novel practical applications by optimizing superconductor properties for use in electronics. In photos and videos shown for the first time, the vortices are moving at velocities much faster than previously thought possible -- up to about 72,000 km/hr (45,000 mph).

Path to discovering new topological materials

Researchers have found a recipe for discovering new topological materials, which have exotic electronic properties that hold promise for future technologies. Until now, finding these materials has been a matter of trial and error.

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