This yr’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 fun 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 yr’s prize “desires to acknowledge a easy and common nanoscale method 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 affect 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 practically flat bands the place digital interactions dominate. The invention of correlated insulating states and superconductivity in magic-angle graphene reworked twistronics from a sublime band-engineering idea right into a extremely tunable platform for quantum matter1,2. It modified the way in which researchers thought concerning the origin of advanced quantum phenomena. All of the sudden, robust correlations, topology and superconductivity have been now not tied to compositionally sophisticated supplies; somewhat, these properties could possibly be generated in a single-element materials, stacking and twisting layers.
The sphere 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 programs have produced correlated insulators, Chern bands, excitonic phases, ferroelectric responses and fractionalized digital states. What makes these programs 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 finding out the only constituents alone, akin to superconductivity, might be so instantly tuned.
Twistronics, or extra usually moiré superlattices, can be starting to form purposeful digital and opto-electronic gadgets. Gate-defined superconducting gadgets in magic-angle graphene have proven how Josephson-junction-like behaviour and superconducting circuit components might 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 route, twisted bulk hBN can type interfacial quantum wells that localize excitons and improve deep-ultraviolet emission for environment friendly UV gentle sources7.
The phrase twistronics smashes collectively ‘twist’ and ‘electronics’, however not like the extra well-known ‘-onics’, it has not but led to real-world purposes. Nevertheless, the subsequent stage for the sphere will hinge on growing extra exact nanofabrication protocols. The sphere has already proven {that a} small rotation can generate new materials properties; the tougher activity now’s to make that transformation extra strong. Attaining this may require extra exact management over twist angle, pressure, lattice rest 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 handle this bottleneck, together with polymer-free meeting utilizing silicon nitride membranes, which has been used to supply cleaner twisted graphene heterostructures with improved moiré uniformity8.
Extra not too long ago, efforts have been made to shift from top-down, layer-by-layer meeting towards bottom-up angle-controlled development of moiré supplies. The objective is now not merely to search out one other part with shocking properties, however to scale a recognized part in designed structure for novel gadgets.
The Kavli Prize celebrates greater than the invention of magic-angle graphene. It acknowledges a broader shift in how nanoscience might be leveraged to entry new nanomaterials. The twist was small, however the penalties have been monumental.
