A new approach to manufacturing multicolour lenses could inspire a new generation of tiny, cheap, and powerful optics for portable devices such as phones and drones.

The design uses layers of metamaterials to simultaneously focus a range of wavelengths from an unpolarised source and over a large diameter, overcoming a major limitation of metalenses, said the first author of the paper reporting the design, Mr Joshua Jordaan, from the Research School of Physics at the Australian National University and the ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS).

Superconducting sensors can detect single low-energy photons. UZH researchers have now used this capability to search for light dark matter particles in the universe.

2H-NbO₂—a novel van der Waals oxide synthesized by researchers from Japan—exhibits strongly correlated electronic properties with two-dimensional flexibility. By chemically extracting lithium ions from the layered sheets of LiNbO₂, the researchers transformed a three-dimensional oxide into a two-dimensional material—unlocking unique properties like Mott insulating states and superconductivity. Bridging transition metal oxides and 2D materials, the discovery paves the way for realizing advanced quantum materials in next-generation electronic devices.