Nano-Lego with a Twist: Science and Applications
July 6th, 2021 FRANK KOPPENS Quantum Nano-Optoelectronics

Recently, a radically new method of building new materials and devices has been discovered, by stacking atomically thin materials, also called two-dimensional (2D) materials. Graphene is a famous example. It’s like playing with lego where the lego blocks are only one atom thick!

Interestingly, unlike real lego, it is also possible to stack 2D materials with a twist. This can lead to near-perfect periodic modulation, as we know well from the moiré effect. One of the biggest surprises in the field was the discovery of superconductivity in twisted graphene. Since then, a gold rush erupted with reports on emerging phenomena ascribed to moiré potentials in a range of non-graphene twisted 2D materials.

By stacking and twisting 2D materials, completely new ways to control light and electrons at the atomic scale has become a reality. The limits of quantum light-matter interactions have been challenged by approaching optical field confinement down to the length-scale of single atoms.

This lecture will give an overview of the science and applications of this exciting and emerging field.

Attendance is mandatory