Recent Articles

Magnetism

Viewpoint: X Rays Expose Transient Spins

X-ray magnetic circular dichroism detects the transient magnetic moments that are induced in a nonmagnetic material by spin injection from a ferromagnet. Read More »

Nanophysics

Focus: Shaking Cleans Nanoscale Surface

An oscillatory motion dramatically reduces the number of contaminant molecules at the interface between two surfaces. Read More »

Astrophysics

Synopsis: Neutrinos from the North

Using Earth as a neutrino filter, the IceCube neutrino experiment strengthens its claim that it has detected neutrinos from powerful astrophysical accelerators outside our Galaxy. Read More »

Optics

Synopsis: A Circularly Polarized Laser for All Labs

Researchers have developed a compact, circularly polarized x-ray source for studying biological materials. Read More »

Magnetism

Synopsis: Multiferroic Surprise

Electric and magnetic polarization are spontaneously produced in an unlikely material—one with a highly symmetric crystal structure. Read More »

Soft Matter

Synopsis: Explaining Chevron-Shaped Bands in Drying Colloids

Experiments explain why solidifying colloids sometimes form zigzagging stripes as they dry. Read More »

Astrophysics

Viewpoint: Deciphering Gamma Rays from a Dwarf Galaxy

Are gamma rays from a nearby dwarf galaxy a beacon of dark matter or a false alarm? Read More »

Fluid Dynamics

Focus: Self-Removing Droplets

Liquid droplets that gather on a fine, water-repelling fiber kick themselves off the fiber as they coalesce. Read More »

Chemical Physics

Synopsis: Seeing a Bond’s Polarity

A new scanning-probe-microscopy technique can image the polarity of individual chemical bonds. Read More »

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