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Organs in the human body have complex networks of fluid-filled tubes and loops with different geometries and topologies. By studying self-organized, synthetic tissues, the link between topological transitions and the emergence of tissue architecture was revealed.
The spatiotemporal profile of the electric field around a high-energy electron beam was visualized using an ultrafast technique based on electro-optic sampling. By investigating the formation of the Coulomb field it was possible to experimentally confirm the validity of the predictions of special relativity regarding electromagnetic fields.
An ultracold spinor Bose gas was used to achieve advanced experimental control and detection of an easy-plane ferromagnet, allowing observation of the system as it approaches equilibrium. The measurements revealed twofold superfluidity in the spin and density degrees of freedom with very different critical speeds.
Measurements of a transversely polarized target were used to probe the spin structure of the proton in the low-energy region where the interactions between the quarks cannot be ignored. These results provide a benchmark for testing our understanding of the strong force.
The formation of bubbles at liquid–liquid interfaces is challenging to explain because gas pockets cannot be stabilized by cracks on solid impurities. Experiments show that a difference in the gas solubilities of two immiscible liquids provides a gas reservoir, which allows gas to accumulate at the interface, leading to bubble formation.
Evidence for an exotic form of the Kondo effect has been obtained by placing magnetic atoms on single-layer 1T-TaSe2, which is a quantum spin liquid candidate. Unlike conventional Kondo screening, which arises from conduction electrons in a metal, the Kondo effect in 1T-TaSe2 arises from charge-neutral particles known as spinons.
A proposed materials design principle can facilitate the discovery of strongly correlated topological semimetals. It predicts promising candidate materials by cross referencing theoretical models based on realistic crystal structures with a materials database. This approach is verified by synthesizing and experimentally investigating a proposed material.
Attosecond charge migration in a neutral molecule has been observed to decohere within approximately 10 fs. However, this does not mean that the electronic coherence is irreversibly lost, as the charge migration is observed to revive after 40–50 fs. These findings have the potential to enable laser control of photochemical processes.
