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Fluid Dynamics

Focus: Video—Stop and Go Droplets

Liquid droplets bouncing on a vibrating liquid surface can execute a surprising cycle, alternating between moving and standing still. Read More »

Fluid Dynamics

Synopsis: How Fluids Flow When the Temperature Changes

Physicists develop a theory to make the seemingly random, thermally driven motion of particles in fluids predictable. Read More »


Synopsis: Focusing Ultrasound with Holographic Lenses  

3D-printed acoustic lenses can improve the performance of ultrasound beams targeting the brain by correcting for the effect of the skull. Read More »


Viewpoint: Supermassive Black Hole May Constrain Superlight Dark Matter

An interpretation of the black hole image taken by the Event Horizon Telescope hints of new constraints on the mass of dark matter. Read More »

Quantum Physics

Synopsis: Dividing Work into Quantum Chunks

Using ideas from topological materials, researchers propose a way to quantize work. Read More »


Focus: Molecular Probe Uses a Polarization Flip

A new way of probing molecules with handedness involves a light pulse in which the polarization changes in the middle of a single wave cycle. Read More »


Coming Soon: Cold Atoms Impersonate Superconductors

Researchers say they are close to simulating high-temperature superconductivity using a lattice of ultracold atoms, a step toward explaining this perfectly conducting state. Read More »

Soft Matter

Synopsis: Chemical Conversations Lead to Particle Cliques

When particles such as cells or a biological molecules leave chemical trails, a variety of clustering behaviors result, according to simulations. Read More »

Fluid Dynamics

Synopsis: Dandelion Fluff Perfected for Flight

Calculations show that the number of white filaments springing from the top of a dandelion seed is optimized for steady flight, allowing the seeds to cruise long distances through the air. Read More »

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