
The state-of-the-art scanning near-field optical microscopy allows us to probe optical properties of materials with nanoscale resolution.

Graphene is a novel plasmonic material that supports infrared plasmons with high confinement, long lifetime and gate tunability.

Two-dimensional layered materials beyond graphene have intriguing nanophotonic properties that could lead to varieties of applications.

Nano-optic tools allow us to reveal different structures, phases and orders in complex materials.