Physics

Creating time crystals

Researchers created a previously-only-theoretical time crystal using a small piece of diamond embedded with millions of atomic-scale impurities known as nitrogen-vacancy (NV) centers. They then used microwave pulses to 'kick' the system out of equilibrium, causing the NV center's spins to flip at precisely-timed intervals.

NASA Celebrates Earth Day with Public Events, Online Activities

This year, NASA will celebrate Earth Day, April 22, with a variety of live and online activities Thursday and Friday, April 20-21, to engage the public in the agency’s mission to better understand and protect our home planet.

NASA Celebrates Earth Day with Public Events, Online Activities

This year, NASA will celebrate Earth Day, April 22, with a variety of live and online activities Thursday and Friday, April 20-21, to engage the public in the agency’s mission to better understand and protect our home planet.

Regulating plant physiology with organic electronics

A drug delivery ion pump constructed from organic electronic components also works in plants. Researchers from the Laboratory of Organic Electronics at Linköping University and from the Umeå Plant Science Centre have used such an ion pump to control the root growth of a small flowering plant, the thale cress (Arabidopsis thaliana).

Method to control light propagation in waveguides invented

Engineers have invented a method to control light propagating in confined pathways, or waveguides, with high efficiency by using nano-antennas. They built photonic integrated devices that had record-small footprints and were also able to maintain optimal performance over an unprecedented broad wavelength range. The method could lead to faster, more powerful, and more efficient optical chips, which in turn could transform optical communications and optical signal processing.

Physicists create 'negative mass'

Physicists have created a fluid with negative mass, which is exactly what it sounds like. Push it, and unlike every physical object in the world we know, it doesn't accelerate in the direction it was pushed. It accelerates backwards.

Study unravels long-held Fermi puzzle tied to nonlinear systems

Nonlinear systems can indeed reach equilibrium, according to new research from an international team of physicists. The work has implications in materials science and other fields.

How X-rays pushed topological matter research over the top

While using X-rays generated by the Advanced Light Source (ALS), a synchrotron facility at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab), to study a bismuth-containing thermoelectric material that can convert heat into electricity, physicist M. Zahid Hasan of Princeton University saw that something was interfering with the anticipated view of electrons' behavior inside the material.

Computers create recipe for two new magnetic materials

Material scientists have predicted and built two new magnetic materials, atom-by-atom, using high-throughput computational models. The success marks a new era for the large-scale design of new magnetic materials at unprecedented speed.

Watch World’s First Live 360 Degree Video of Rocket Launch April 18

NASA, in coordination with United Launch Alliance (ULA) and Orbital ATK, will broadcast the world’s first live 360-degree stream of a rocket launch.

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