Nature, Published online: 22 July 2026; doi:10.1038/s41586-026-10817-9

An insulator-free topological waveguide architecture comprising four inequivalent photonic valley half-semimetals arranged in a parallel, cyclic configuration and stacked very close to one another demonstrates robust, multi-lane, unidirectional light transport with 100% spatial efficiency.

Nature, Published online: 22 July 2026; doi:10.1038/s41586-026-10823-x

Cryo-STEM reveals that SrTiO3 forms periodic polar nanodomains below 105 K, but these fragment below 40 K, linking quantum paraelectricity to nanoscale polar ordering and disordering.

Nature, Published online: 10 June 2026; doi:10.1038/s41586-026-10596-3

Efficient blue perovskite light-emitting diodes with an external quantum efficiency of 21.8% are achieved through in situ polymerization-driven nanocrystal confinement.