Jing Zhang

In an ultracold cloud, potassium atoms behave like waves that can add up and amplify each other — much like sound waves in a musical instrument create a loud chord. Physicists have learned to control this process by tuning the strength of atomic interactions with a magnetic field.

Every human brain is covered with folds, much like a fingerprint: each with its own unique pattern. In dementia, this pattern changes, but for two similar diseases, Alzheimer's and dementia with Lewy bodies, the changes are nearly indistinguishable to the eye. Doctors need a reliable way to separate them, because the treatments differ.

Testing molecules for solar cells is like trying a new sauce in a restaurant where the chef changes every five minutes. Disturbances (humidity, substrate cleanliness, deposition method) hide the true effect. To extract real benefit from noisy data, scientists created a 'smart sieve'—an algorithm that sifts through the results and leaves only reliable improvements.

A sheet of graphene is a mesh of carbon atoms one atom thick. Even the slightest contamination shows up on it, like dust specks on eyeglass lenses. Ten years ago, researchers learned to hide graphene between layers of boron nitride, like placing a fragile sheet between two pieces of plastic wrap.

Imagine a soundproof room where you tune a tuning fork: the faintest rustle throws off the tuning. In the world of ultra-precise atomic measurements, that rustle is the magnetic field. It imperceptibly shifts transition frequencies, and to get a reliable standard, physicists had to carefully calibrate the field.