Polaritons are hybrid excitations of matter and photons. In recent years, polaritons in van der
Waals nanomaterials—known as van der Waals polaritons—have shown great promise to …

In this brief review, we summarize and elaborate on some of the nomenclature of polaritonic
phenomena and systems as they appear in the literature on quantum materials and …

Polaritons in anisotropic materials result in exotic optical features, which can provide
opportunities to control light at the nanoscale,,,,,,,,–. So far these polaritons have been …

Polaritons, originating from the interactions between photons and material excitations, have
attracted attention because of their strong field compression and deeply subdiffractional …

Infrared and optical spectroscopy represents one of the most informative methods in
advanced materials research. As an important branch of modern optical techniques that has …

Manipulating the properties of the isofrequency contours (IFCs) of materials provides a
powerful means of controlling the interaction between light and matter. Hyperbolic …

Enhanced light-matter interactions are the basis of surface-enhanced infrared absorption
(SEIRA) spectroscopy, and conventionally rely on plasmonic materials and their capability to …

Phonon polaritons enable light confinement at deep subwavelength scales, with potential
technological applications, such as subdiffraction imaging, sensing and engineering of …

Controlling the twist angle between two stacked van der Waals (vdW) crystals is a powerful
approach for tuning their electronic and photonic properties. Hyperbolic media have recently …

Highly confined and low-loss polaritons are known to propagate isotropically over graphene
and hexagonal boron nitride in the plane, leaving limited degrees of freedom in …