This 12 months’s Kavli Prize in Nanoscience acknowledges the sphere of twistronics and exemplifies how easy approaches can form nanoscience analysis.
The 2026 Kavli Prize in Nanoscience acknowledges Eva Y. Andrei, Allan H. MacDonald and Pablo Jarillo-Herrero for his or her pioneering work that established the sphere of twistronics. It’s a becoming second not solely to have a good time these exceptional contributions, but in addition to mirror on how a easy concept modified nanoscience: rotate one atomically skinny crystal with respect to a different, and a brand new materials is born.
Credit score: Trond Loekke
Not like a number of of earlier years’ prizes which have acknowledged methodological advances, this 12 months’s prize “desires to acknowledge a easy and common nanoscale strategy to attain new supplies properties”, says Mari-Ann Einarsrud, professor at Norwegian College of Science and Know-how and chair of the choice committee.
Twistronics has had a remarkably broad influence in nanomaterials science. In twisted bilayer graphene, a small change in angle can generate moiré patterns that reshape the digital density of states and, on the magic angle (1.1°), produce almost flat bands the place digital interactions dominate. The invention of correlated insulating states and superconductivity in magic-angle graphene reworked twistronics from a chic band-engineering idea right into a extremely tunable platform for quantum matter1,2. It modified the best way researchers thought concerning the origin of advanced quantum phenomena. Out of the blue, sturdy correlations, topology and superconductivity had been now not tied to compositionally sophisticated supplies; fairly, these properties could possibly be generated in a single-element materials, stacking and twisting layers.
The sector has since expanded far past its unique bilayer graphene setting. Twisted transition-metal dichalcogenides, graphene–boron nitride heterostructures, moiré magnets and semiconducting van der Waals techniques have produced correlated insulators, Chern bands, excitonic phases, ferroelectric responses and fractionalized digital states. What makes these techniques particularly compelling is the mixture of wealthy physics and nanoscale management. Twistronics launched a basic tuning knob to nanoscience: geometry, which has since prolonged to incorporate the broader idea of topology. And furthermore, that emergent properties that can’t all the time be predicted by learning the one constituents alone, corresponding to superconductivity, will be so immediately tuned.
Twistronics, or extra usually moiré superlattices, can also be starting to form practical digital and opto-electronic units. Gate-defined superconducting units in magic-angle graphene have proven how Josephson-junction-like behaviour and superconducting circuit parts will be created inside a single moiré materials3,4,5. In parallel, magic-angle photonic superlattices have enabled lasing from twist-induced confined modes, illustrating that moiré geometry can manipulate photons too6. Extending this photonic path, twisted bulk hBN can type interfacial quantum wells that localize excitons and improve deep-ultraviolet emission for environment friendly UV mild sources7.
The phrase twistronics smashes collectively ‘twist’ and ‘electronics’, however in contrast to the extra well-known ‘-onics’, it has not but led to real-world purposes. Nonetheless, the subsequent stage for the sphere will hinge on growing extra exact nanofabrication protocols. The sector has already proven {that a} small rotation can generate new materials properties; the tougher job now’s to make that transformation extra strong. Reaching this may require extra exact management over twist angle, pressure, lattice leisure and interface cleanliness. Even slight variations can reshape the digital construction, broaden part boundaries or make it tough to separate intrinsic physics from pattern dysfunction. Encouragingly, new fabrication approaches are starting to deal with this bottleneck, together with polymer-free meeting utilizing silicon nitride membranes, which has been used to provide cleaner twisted graphene heterostructures with improved moiré uniformity8.
Extra lately, efforts have been made to shift from top-down, layer-by-layer meeting towards bottom-up angle-controlled progress of moiré supplies. The aim is now not merely to search out one other part with shocking properties, however to scale a identified part in designed structure for novel units.
The Kavli Prize celebrates greater than the invention of magic-angle graphene. It acknowledges a broader shift in how nanoscience will be leveraged to entry new nanomaterials. The twist was small, however the penalties had been huge.