Kim Krieger

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Kim Krieger is a freelance science writer in Norwalk, Connecticut.

Soft Matter

Focus: Mixing it Up (Or Not)

Water can play a dual role in granular mixtures, encouraging mixing in some situations but discouraging it in others. Read More »

Materials Science

Focus: Asymmetric Patterns from Symmetric Forces

A spherically symmetric interaction force between particles can cause them to self-assemble into a surprisingly asymmetric (chiral) pattern in two dimensions, according to simulations. Read More »

Materials Science

Focus: Metallic Glass isn’t All Glassy

Metallic glasses, new materials that are strong and durable, are not entirely disordered on the atomic scale but can have regions of near-crystalline order. Read More »

Fluid Dynamics

Focus: Saltwater Blobs Explain Puzzling Ocean Patterns

Surprisingly uniform layers that form in the ocean result from salt fingers—long, vertical tubes of water with salt content different from their surroundings—according to simulations. Read More »

Interdisciplinary Physics

Focus: Robot Shows How to Jump High

A simple robot demonstrates the timing and motion necessary to make the highest jumps, with parallels to human jumping. Read More »

Fluid Dynamics

Focus: Coffee Stains Test Universal Equation

An equation that describes a wide array of phenomena can be directly tested by watching the equivalent of a drying coffee drip. Read More »

Biological Physics

Focus: New Medical Scan Requires Less Touching

A medical imaging technique uses electric and magnetic fields to generate vibrations in tissues and measure their mechanical stiffness in a new way. Read More »