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Plasma Physics

Synopsis: Helicons in a Lab Plasma

The plasma waves known as helicons can be created and measured in the laboratory even without confining walls. Read More »

Astrophysics

Synopsis: Spatial Tests of Dark Matter

Maps of merging galaxy clusters could help find signatures of dark matter based on its decay into photons. Read More »

Biological Physics

Synopsis: Water Flow Helps Cells Move

Water flowing through a cell’s membrane is essential to the process of changing cellular shape. Read More »

Atomic and Molecular Physics

Synopsis: Dipolar Gas Chilled to Near Zero

The cooling of strongly dipolar molecules to their absolute ground state has opened the possibility of creating new forms of matter. Read More »

Optics

Viewpoint: Cavity with Iron Nuclei Slows Down X Rays

Slow light effects have been measured for x rays using a cavity filled with iron nuclei, where the speed of light was reduced by a factor of 10,000. Read More »

Semiconductor Physics

Focus: Landmarks—Accidental Discovery Leads to Calibration Standard

The quantum Hall effect, discovered unexpectedly 35 years ago, is now the basis for defining the unit of electrical resistance. Read More »

Particles and Fields

Viewpoint: A More Precise Higgs Boson Mass

A new value for the Higgs boson mass will allow stronger tests of the standard model and of theories about the Universe’s stability. Read More »

Magnetism

Synopsis: Spin Transport in Room-Temperature Germanium

Germanium layers can carry spin-polarized currents over several hundred nanometers at room temperature, a key asset for spintronic applications. Read More »

Astrophysics

Synopsis: Quakes in Neutron Stars

Simulations of the magnetic field of a neutron star show that shear stresses induced by the field are strong enough to fracture the star’s crust. Read More »

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