Physics

1 + 1 does not equal 2 for graphene-like 2D materials

Physicists have discovered that when two atomically thin graphene-like materials are placed on top of each other their properties change, and a material with novel hybrid properties emerges, paving the way for design of new materials and nano-devices.

Can entangled qubits be used to probe black holes?

Information escapes from black holes via Hawking radiation, so it should be possible to capture it and use it to reconstruct what fell in: if given time longer than the age of the universe. However, if information is scrambled rapidly when it falls in, it may be possible to resurrect it by capturing Hawking radiation from entangled qubits. Physicists confirmed scrambling in a quantum computer, based on predictions by theorists.

Spin devices rev up

Electric currents drive all our electronic devices. The emerging field of spintronics looks to replace electric currents with what are known as spin currents. Researchers from the University of Tokyo have made a breakthrough in this area. Their discovery of the magnetic spin Hall effect could lead to low-power, high-speed and high-capacity devices. They have created sample devices which can further research into potential applications.

Download the Big Bang on your smartphone

Experience the 13.8-billion-year-old story of the universe in just seven minutes with CERN's new Big Bang app. Launched today at the Google Arts and Culture event in Washington D.C., the app, free and available for download, uses augmented or mixed reality to create an immersive adventure to our origin.

Einstein 'puzzle' solved as missing page emerges in new trove

An Albert Einstein "puzzle" has been solved thanks to a missing manuscript page emerging in a trove of his writings newly acquired by Jerusalem's Hebrew University, officials announced Wednesday.

The optomechanical Kerker effect: Controlling light with vibrating nanoparticles

For the Kerker effect to occur, particles need to have electric and magnetic polarizabilities of the same strength. This, however, is very challenging to achieve, as magnetic optical resonances in small particles are relatively weak. Researchers at Ioffe Institute, in St. Petersburg, have recently shown that a similar effect can be attained when small particles are trembling in space.

The science of knitting, unpicked

Dating back more than 3,000 years, knitting is an ancient form of manufacturing, but Elisabetta Matsumoto of the Georgia Institute of Technology in Atlanta believes that understanding how stitch types govern shape and stretchiness will be invaluable for designing new "tunable" materials. For instance, tissuelike flexible material could be manufactured to replace biological tissues, such as torn ligaments, with stretchiness and sizing personalized to fit each individual.

Scientists study neutron scattering for researching magnetic materials

Physicists from the University of Luxembourg and their research partners have demonstrated for the first time in a comprehensive study how magnetic materials can be examined using neutron scattering techniques. The scientists have published their insights in Reviews of Modern Physics, the journal of the American Physical Society.

Biopsy frozen in seconds in the operating room

For rapid freezing of a biopsy sample taken from a patient, the standard procedure uses liquid nitrogen. However, this is not allowed inside the operating room. The consequence is a laborious procedure causing unnecessary delay. Researchers of the University of Twente developed a 'snap freezing' apparatus that cools a vial even faster than in liquid nitrogen, and is safe for use inside the operating room. Another advantage is that the speed of cooling is adjustable. The new device is presented in Nature's Scientific Reports.

More evidence of sound waves carrying mass

A trio of researchers at Columbia University has found more evidence showing that sound waves carry mass. In their paper published in the journal Physical Review Letters, Angelo Esposito, Rafael Krichevsky and Alberto Nicolis describe using effective field theory techniques to confirm the results found by a team last year attempting to measure mass carried by sound waves.

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