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Materials Science

Focus: Glue or Ink Improves Soft Metal Cuts

Coating a soft metal with any compound that adheres leads to smoother cuts because the coating makes the surface more brittle. Read More »

Cosmology

Synopsis: Ideal Mergers for Measuring Cosmic Expansion

Among gravitational-wave sources, the merger of a neutron star and a black hole may provide the most precise way to measure how fast the Universe is expanding. Read More »

Fluid Dynamics

Synopsis: Beat Strong, My Liquid Gallium Heart

Applying a current across a drop of liquid gallium induces an oscillatory motion reminiscent of that of a beating heart. Read More »

Cosmology

Synopsis: A Closer Look at Cosmic Dust

Simulations provide a detailed picture of the emission of dust grains in our Galaxy, which is known to interfere with measurements of the cosmic microwave background. Read More »

Condensed Matter Physics

Viewpoint: A Hot Topic in the Quantum Hall Effect

Heat transport studies of fractional quantum Hall systems provide evidence for a new phase of matter with potential applications in fault-tolerant quantum computation. Read More »

Atomic and Molecular Physics

Synopsis: Collective Spin Behavior in an Ultracold Quantum Gas

Researchers have spotted a never-before-seen collective spin oscillation in a Bose-Einstein condensate of chromium atoms. Read More »

Atomic and Molecular Physics

Synopsis: Measured Dissociation Energy Doesn’t Match Theory

A precision measurement of the energy needed to break molecular hydrogen apart disagrees with recent calculations. Read More »

Cosmology

Viewpoint: The First Stars May Shed Light on Dark Matter

Recent observations of hydrogen absorption that occurred when the first stars turned on may give insights into the nature of dark matter, new analyses show. Read More »

Materials Science

Focus: It’s the Heat and the Humidity—Two Ways a Crystal Shrinks

The mechanisms by which a material contracts on heating and on absorbing water turn out to be intimately connected. Read More »

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