In active matter systems, increasing density usually reduces activity. Now, in a system where density enhances activity, collective motion is shown to arise from non-motile oscillators when they are confined.

Bacteria tend to live in thin layers of water on surfaces. Now the capillary forces in these layers are shown to help organize the bacteria into dense packs.

A numerical approach capable of simulating large-scale Rydberg atom quantum systems suggests that protocols for preparing topological states can produce experimental signatures of these states without reaching a topological phase.

The cytoskeleton and extracellular matrix are linked by molecular clutches that enable cells to sense their environment. Now it is shown that the elastic properties of the clutches underpin stiffness sensing.

Large quantum systems with high entanglement are difficult to simulate with classical methods, but now it is shown that entanglement may be beneficial for quantum simulations.

Theory predicts that phonons—quanta of lattice vibrations—can carry finite angular momentum and thus influence physical properties of materials. Now phonons with angular momentum have been seen in tellurium with a chiral crystal structure.

Unresolved discrepancies between isotope ratio measurements are not uncommon and have even slowed down the revision of the International System of Units, explains Juris Meija.

It’s never too early to plan for a regular dose of physics during your vacation. If you are looking for inspiration, we have some hidden physics gems for you.

From monitoring sea-level changes at the millimetre-level to navigating through the streets of Gothenburg, Karine Le Bail discusses the need for precise positioning within well-defined 3D terrestrial and celestial reference frames.