Physics

Topological material switched off and on for the first time

A new study represents a significant advance in topological transistors and beyond-CMOS electronics. First time that the topological state in a topological insulator has been switched on and off using an electric field. Researchers proved this is possible at room temperature, which is necessary for any viable replacement to CMOS technology in everyday applications.

NASA’s Newly Arrived OSIRIS-REx Spacecraft Already Discovers Water on Asteroid

Recently analyzed data from NASA’s Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) mission has revealed water locked inside the clays that make up its scientific target, the asteroid Bennu.

Novel laser technology for microchip-size chemical sensors

A special laser system has been developed, using two slightly different frequency combs. This allows for chemical analysis on tiny spaces -- it is a millimeter-format chemistry lab. With this new patent-pending technology, frequency combs can be created on a single chip in a very simple and robust manner.

Media Invited to News Conference, Interviews with Next Space Station Crew

NASA astronauts Nick Hague and Christina Hammock Koch will discuss their upcoming mission to the International Space Station in a news conference at 3 p.m. EST Wednesday, Dec. 12, at NASA’s Johnson Space Center in Houston.

Topological matters: Toward a new kind of transistor

Billions of tiny transistors supply the processing power in modern smartphones, controlling the flow of electrons with rapid on-and-off switching.

Compelling evidence for small drops of perfect fluid

Nuclear physicists analyzing data from the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC)—a U.S. Department of Energy (DOE) Office of Science user facility for nuclear physics research at Brookhaven National Laboratory—have published in the journal Nature Physics additional evidence that collisions of miniscule projectiles with gold nuclei create tiny specks of the perfect fluid that filled the early universe.

Nanoglue can make composites several times tougher during dynamic loading

Materials scientists have found that oscillating loads at certain frequencies can lead to several-fold increases in the strength of composites with an interface that is modified by a molecular layer of 'nanoglue.'

ESRF puts its shining light in standby mode, to return brighter in 2020

"No beam for a while. Restart in about 20 months." Early this morning, operators of the ESRF Control room turned off the beam, ending 26 years of successful operation of the European Synchrotron, the world's most powerful synchrotron light source. 2018 is a key year in the history of the ESRF. Thirty years after the signature of the ESRF Convention, the ESRF's shining light has been put in standby mode.

Iron-rich lamellae in a semiconductor

There is often a pronounced symmetry when you look at the lattice of crystals: It doesn't matter where you look—the atoms are uniformly arranged in every direction. This behavior would also be expected of a crystal, which physicists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), the University of Warsaw and the Polish Academy of Sciences produced with a compound from an indium arsenide semiconductor spiked with iron. The material, however, did not adhere to perfect symmetry. The iron formed two-dimensional, lamellar-shaped structures in the crystal that were magnetic.

NASA’s Voyager 2 Probe Enters Interstellar Space

For the second time in history, a human-made object has reached the space between the stars. NASA’s Voyager 2 probe now has exited the heliosphere – the protective bubble of particles and magnetic fields created by the Sun.

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