Recent Articles
How to Charge Up a Sliding Water Drop
Experiments and theory explain how charge builds up in a moving water drop and why the effect requires a water-repelling surface. Read More »
Recipe for a One-Way Waveguide
Experiments and numerical simulations indicate that randomly replacing a few nonmagnetic components with magnetic ones in a photonic alloy induces backscattering-free light propagation along its edge. Read More »
Spider-Inspired Microphone Detects Tiny Gusts of Sound
A small device senses sounds using a spiderweb-like design—a strategy that could lead to chip-size microphones that are less affected by thermal noise. Read More »
Proton Effective Charge Depends on Neutron Population
Experiments comparing neutron-rich cadmium with previous data on a neutron-poor version prove that a key parameter in nuclear calculations depends on the neutron-to-proton ratio. Read More »
Thin Films of Topological Magnets for Thermoelectric Applications
A thin film of a topological magnet displays a large thermoelectric effect that doesn’t require an applied magnetic field—a behavior that could lead to new energy-harvesting devices. Read More »
Classifying the Surface Magnetization of Antiferromagnets
Group theory and first-principles calculations combine to predict which antiferromagnets have potentially useful net surface magnetization. Read More »
Time-Symmetric Motion Maximizes Energy Efficiency in Fluid
Researchers discovered a trick for dragging an object in a fluid with minimal effort, suggesting an optimal strategy for nanorobots. Read More »
Cosmic Strings’ Imprints in High-Frequency Gravitational Waves
Spacetime wrinkles known as cosmic strings, which might have formed in the early Universe, could be a dominant source of gravitational waves at ultrahigh frequencies, according to new calculations. Read More »
Ultrablack Coating Could Reduce Stray Light in Telescopes
Using atomic layer deposition, scientists have created a new light-absorbing thin film that could help telescopes see a starrier night. Read More »
