Add to ORKGWe investigated phonon-polaritons in hexagonal boron nitride-a naturally hyperbolic van der Waals material-by means of the scattering-type scanning near-field optical microscopy. Real-space nanoimages we have obtained detail how the polaritons are launched when the light incident on a thin hexagonal boron nitride slab is scattered by various intrinsic and extrinsic inhomogeneities, including sample edges, metallic nanodisks deposited on its top surface, random defects, and surface impurities. The scanned tip of the near-field microscope is itself a polariton launcher whose efficiency proves to be superior to all the other types of polariton launchers we studied. Our work may inform future development of polaritonic nanodevices as well as fu...
van der Waals heterostructures assembled from atomically thin crystalline layers of diverse two-dime...
Near-field mapping has been widely used to study hyperbolic phonon-polaritons in van der Waals cryst...
Phonon-polaritons (PhPs) arise from the strong coupling of photons to optical phonons. They offer li...
We investigated phonon-polaritons in hexagonal boron nitride - a naturally hyperbolic van der Waals ...
We investigated phonon–polaritons in hexagonal boron nitridea naturally hyperbolic van der Waals ma...
Hyperbolic polaritons in van der Waals (vdW) materials recently attract a lot of attention, owing to...
Uniaxial materials whose axial and tangential permittivities have opposite signs are referred to as ...
Hyperbolic materials exhibit sub-diffractional, highly directional, volume-confined polariton modes....
van der Waals heterostructures assembled from atomically thin crystalline layers of diverse two-dime...
We use scanning near-field optical microscopy to study the response of hexagonal boron nitride nanoc...
Mid-infrared nanoimaging and spectroscopy of two-dimensional (2D) materials have been limited so far...
Phonon polaritons in van der Waals materials reveal significant confinement accompanied with long pr...
Uniaxial materials whose axial and tangential permittivities have opposite signs are referred to as ...
Hexagonal boron nitride has been proposed as an excellent candidate to achieve subwavelength infrare...
Hexagonal Boron Nitride (hBN) is a layered van der Waals material able to sustain hyperbolic phonon-...
van der Waals heterostructures assembled from atomically thin crystalline layers of diverse two-dime...
Near-field mapping has been widely used to study hyperbolic phonon-polaritons in van der Waals cryst...
Phonon-polaritons (PhPs) arise from the strong coupling of photons to optical phonons. They offer li...
We investigated phonon-polaritons in hexagonal boron nitride - a naturally hyperbolic van der Waals ...
We investigated phonon–polaritons in hexagonal boron nitridea naturally hyperbolic van der Waals ma...
Hyperbolic polaritons in van der Waals (vdW) materials recently attract a lot of attention, owing to...
Uniaxial materials whose axial and tangential permittivities have opposite signs are referred to as ...
Hyperbolic materials exhibit sub-diffractional, highly directional, volume-confined polariton modes....
van der Waals heterostructures assembled from atomically thin crystalline layers of diverse two-dime...
We use scanning near-field optical microscopy to study the response of hexagonal boron nitride nanoc...
Mid-infrared nanoimaging and spectroscopy of two-dimensional (2D) materials have been limited so far...
Phonon polaritons in van der Waals materials reveal significant confinement accompanied with long pr...
Uniaxial materials whose axial and tangential permittivities have opposite signs are referred to as ...
Hexagonal boron nitride has been proposed as an excellent candidate to achieve subwavelength infrare...
Hexagonal Boron Nitride (hBN) is a layered van der Waals material able to sustain hyperbolic phonon-...
van der Waals heterostructures assembled from atomically thin crystalline layers of diverse two-dime...
Near-field mapping has been widely used to study hyperbolic phonon-polaritons in van der Waals cryst...
Phonon-polaritons (PhPs) arise from the strong coupling of photons to optical phonons. They offer li...