Recent Articles

Biological Physics

Synopsis: A “Meta” Solution to MRI Inhomogeneities

A simple metamaterial “atom” placed inside an MRI scanner may help create better spatial uniformity in the radio waves that drive the signal. Read More »

Soft Matter

Synopsis: Reversible Self-Assembly of Macroscopic “Polymers”

Reconfigurable materials step closer to reality with a colloidal system that self-assembles, disassembles, and reassembles into polymer-like chains in response to temperature changes. Read More »

Astrophysics

Synopsis: Solar Gamma Rays Behaving Strangely

Nearly 10 years of Fermi telescope images show unexpected changes in the numbers and energies of gamma-ray photons coming from the Sun. Read More »

Astrophysics

Focus: Gas Cloud Temperature Constrains Dark Matter

One proposed type of dark matter should heat up cold hydrogen clouds in the Galaxy, so their low temperatures imply limits on this dark matter theory. Read More »

Photonics

Viewpoint: Non-Hermitian Topological Systems

A theoretical framework tries to sort out where topological phases may arise in non-Hermitian systems—which are systems with gain and loss. Read More »

Spintronics

Synopsis: Anisotropic Spin Currents in Graphene

Two groups have shown they can create long-lived, polarized spin currents in bilayer graphene. Read More »

Magnetism

Synopsis: A Faster Diamond Magnetometer

Diamond-defect magnetometers can now simultaneously determine all spatial components of a magnetic field, leading to a factor of 4 decrease in measurement times. Read More »

Quantum Physics

Viewpoint: Circuit Simulates One-Dimensional Quantum System

An electrical circuit simulates a quantum phase transition induced by the presence of an impurity in a one-dimensional conductor. Read More »

Biological Physics

Synopsis: Knotted Loops Fall Flat

A knotted loop of metal beads—mimicking a knotted molecule—organizes into a flat horizontal ring when drifting down through a viscous fluid. Read More »

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