Recent Articles

Atomic and Molecular Physics

Synopsis: Rapid Alignment

A frequency comb can align an ensemble of molecules 150 million times per second. Read More »

Astrophysics

Viewpoint: Weighing Dark Matter Halos with the Cosmic Microwave Background

Gravitational lensing by foreground dark matter halos leaves an observable imprint on the cosmic microwave background, which can be used to determine their masses Read More »

Mesoscopics

Focus: Voltage Fluctuations Converted to Electricity

In a step toward the conversion of excess heat into electric current, researchers demonstrate a device that generates current in response to voltage fluctuations that mimic heat. Read More »

Graphene

Synopsis: Sorting Carbon Nanotubes with Light

Laser light can be used to sort carbon nanotubes according to their chirality. Read More »

Complex Systems

Synopsis: When Does a Disease Turn Epidemic?

A new model can compute when a spreading disease triggers an epidemic within a network that varies with time. Read More »

Astrophysics

Synopsis: Staying Cool in Outer Space

In the absence of gravity, surface tension forces affect how fluids flow in heat pipes and may limit the device’s cooling performance on spacecraft missions. Read More »

Atomic and Molecular Physics

Viewpoint: Negative Ions in Cold Storage

A cooled ring stores high-speed negative ions for more than 1000 seconds and enables new studies of atomic and molecular ions that are important in interstellar and atmospheric chemistry. Read More »

Quantum Information

Synopsis: Entangled Static

Evidence of quantum entanglement is uncovered in an unlikely place: the electrical noise in a simple quantum conductor chilled to near zero. Read More »

Particles and Fields

Synopsis: Baryon’s Innards Have Molecular Structure

The Lambda baryon, in its excited state, behaves like a molecule, according to new lattice chromodynamics simulations of the particle’s magnetic structure. Read More »

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