Polaritonic modes in low-dimensional materials enable strong light–matter interactions and
the manipulation of light on nanometer length scales. Very recently, a new class of …

Abstract 2D van der Waals (vdW) materials are emerging as the next generation platform for
optical and electronic devices with their wide coverage of the energy bandgaps. The strong …

Orthorhombic molybdenum trioxide (α‐MoO3), a newly discovered polaritonic van der Waals
crystal, is attracting significant attention due to its strongly anisotropic mid‐infrared phonon …

Exciton–plasmon polaritons (EPPs) are attractive for both the exploration of fundamental
phenomena and applications in nanophotonics. Previous studies of EPPs mainly relied on …

We report thorough measurements of surface plasmon polaritons (SPPs) running along
nearly perfect air-gold interfaces formed by atomically flat surfaces of chemically synthesized …

Polaritons are well-established carriers of light, electrical signals, and even heat at the
nanoscale in the setting of on-chip devices. However, the goal of achieving practical …

Hyperbolic polaritons that originate from the extreme optical anisotropy in van der Waals
(vdW) crystals have gained much attention for their potential in controlling nanolight. For …

Scattering-type scanning near-field optical microscope (s-SNOM) has become an essential
tool to study polaritons—quasiparticles of light coupled to collective charge oscillations—via …

Accessing the low-energy non-equilibrium dynamics of materials with simultaneous spatial
and temporal resolutions has been a bold frontier of electron microscopy in recent years …

Surface plasmons have proven their ability to boost the sensitivity of mid-infrared
hyperspectral imaging by enhancing light-matter interactions. Surface phonons, a …