Recent Articles

Fluid Dynamics

Focus: Video—Stretching Fingers on a Puddle’s Edge

A spreading drop containing a mixture of two liquids breaks into fingers or spherical droplets, depending on the fluids. Read More »

Materials Science

Synopsis: “Breathing” Explains Light-Induced Darkening

New experiments identify the movement of oxygen atoms as the origin of light-induced color changes in the material yttrium oxyhydride. Read More »

Materials Science

Pumping up Ferroelectrics

Mixing a trace of an additional element into a material used in electronics could dramatically improve the material’s properties. Read More »


Synopsis: Excited by Shaped Electrons

Electrons with a modulated wave function might enable improvements in electron microscopy and quantum computing. Read More »

Complex Systems

Synopsis: Predicting Contagion Speed

A new analysis predicts the speed at which an infectious disease spreads to specific individuals in a network. Read More »

Soft Matter

Synopsis: Neural Networks Know Their Knots

Neural networks correctly classify different types of knot, a problem that has stumped physicists and mathematicians. Read More »


Viewpoint: Structure Formation in the Very Early Universe

Numerical calculations explain how density fluctuations in the Universe grew by orders of magnitude during the “primordial dark ages.” Read More »

Atomic and Molecular Physics

Focus: Green Light for Terahertz Movies

A new technique uses long-wavelength infrared radiation to produce video with a high frame rate, which could be useful for nondestructive testing of products. Read More »


Synopsis: Possible Neutrino Sources Peek out of IceCube Data

Ten years of observations from the IceCube detector show that researchers are closing in on identifying the astrophysical sources of high-energy neutrinos. Read More »

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