A spatially oscillating two-dimensional waveguide array is used to realize a photonic topological insulator in synthetic dimensions with modal-space edge states, unidirectionality and robust topological protection.

Development of simple uranyl recognition motifs possessing siderophore-like binding strength and selectivity presents a challenge. Here the authors show a comprehensive theoretical and experimental study on uranyl binding with a polymeric adsorbent material decorated with a non-toxic siderophore inspired small molecule chelator.

A combination of light-emitting semiconductors and photochromic molecules enables the fabrication of optically switchable organic light-emitting transistors with tunable current and luminance.

Copper on ceria is an excellent catalyst for the low-temperature water–gas shift reaction. Here the active sites are directly imaged by electron microscopy and probed with in situ spectroscopy, showing that the reaction proceeds via a cooperative mechanism whereby the Cu⁺ chemically adsorbs CO while an adjacent O_v–Ce³⁺ site dissociatively activates H₂O.

Atomically dispersed gold supported by carbon dots amplifies mitochondrial oxidative stress, and leads to irreversible cell damage, inhibiting hepatocellular carcinoma in animal models.