Physics

Aloof neutrons may actually 'talk' to one another briefly in new kind of symmetry

Even though neutrons love to partner with protons to make the nucleus of an atom, the particles have always been notorious for their reluctance to bind with each other. But according to a new proposed theory, these particles might communicate under certain circumstances, forming a new sort of 'unparticle'—which could offer evidence of a new kind of symmetry in physics.

Citizen Science is Changing People's Lives — This Project Explores How It Happens

SciQuest, a new citizen science project, explores the impact of normal people doing real science.

Physicists develop new unique scanning tunneling microscope with magnetic cooling to study quantum effects

Scanning tunneling microscopes capture images of materials with atomic precision and can be used to manipulate individual molecules or atoms. Researchers have been using the instruments for many years to explore the world of nanoscopic phenomena. A new approach is now creating new possibilities for using the devices to study quantum effects.

Revealing the hidden structure of quantum entangled states

Researchers have shown how to quickly unravel quantum entangled systems, revealing the structure of a 100 dimensional state in mere minutes against decades for a full reconstruction. The work offers a new and fast tool for quantum computing and communication.

Anchoring single atoms

There is a dictum to 'never change a running system'. New methods can however be far superior to older ones. While to date chemical reactions are mainly accelerated by catalytic materials that comprise several hundreds of atoms, the use of single atoms could provide a new approach for catalysis. An international research team has now developed a new method for anchoring individual atoms in a controlled and stable manner on surfaces. This is an important step towards single atom catalysis.

Voices of reason? Study links acoustic correlations, gender to vocal appeal

What makes a voice attractive? The question is the subject of broad interest, with far-reaching implications in our personal lives, the workplace, and society.

Compact speaker systems direct sound efficiently

As electronic devices decrease in size, their component parts, like speakers, need to shrink as well.

Protruding eyes, mouth make stingrays more hydrodynamically efficient

With their compressed bodies and flexible pectoral fins, stingrays evolved to be among nature's most efficient swimmers. Scientists have long wondered about the role played by their protruding eyes and mouth, which one might expect to be hydrodynamic disadvantages.

Physicist helps confirm a major advance in stellarator performance

Results of a heat-confinement experiment on the twisty Wendelstein 7-X stellarator in Germany could enable devices based on the W7-X design to lead to a practical fusion reactor.

Physicists use a new absorbing-state model to investigate random close packing

Sphere packing, a mathematical problem in which non-overlapping spheres are arranged within a given space, has been widely investigated in the past. It has been proven that the densest possible packing is a face-centered cubic (FCC) crystal with a space-filling fraction of ϕFCC=π/√18≈0.74.

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