Phonon polaritons and hyperbolic response in van der Waals materials

G Hu, J Shen, CW Qiu, A Alù… - Advanced Optical Materials, 2020 - Wiley Online Library
Phonon polaritons provide useful opportunities, complementary to those provided by
plasmon polaritons, in the study of the interaction of light with matter at small scales. The …

Artificial metaphotonics born naturally in two dimensions

Z Dai, G Hu, Q Ou, L Zhang, F Xia… - Chemical …, 2020 - ACS Publications
Recently, two rich and exciting research fields, layered two-dimensional (2D) materials and
metamaterials, have started overlapping. Metamaterials are artificial, engineered materials …

In-plane anisotropic and ultra-low-loss polaritons in a natural van der Waals crystal

W Ma, P Alonso-González, S Li, AY Nikitin, J Yuan… - Nature, 2018 - nature.com
Polaritons—hybrid light–matter excitations—enable nanoscale control of light. Particularly
large polariton field confinement and long lifetimes can be found in graphene and materials …

Configurable phonon polaritons in twisted α-MoO3

M Chen, X Lin, TH Dinh, Z Zheng, J Shen, Q Ma… - Nature materials, 2020 - nature.com
Moiré engineering is being intensively investigated as a method to tune the electronic,
magnetic and optical properties of twisted van der Waals materials. Advances in moiré …

Photonic crystals for nano-light in moiré graphene superlattices

SS Sunku, GX Ni, BY Jiang, H Yoo, A Sternbach… - Science, 2018 - science.org
Graphene is an atomically thin plasmonic medium that supports highly confined plasmon
polaritons, or nano-light, with very low loss. Electronic properties of graphene can be …

Infrared hyperbolic metasurface based on nanostructured van der Waals materials

P Li, I Dolado, FJ Alfaro-Mozaz, F Casanova, LE Hueso… - Science, 2018 - science.org
Metasurfaces with strongly anisotropic optical properties can support deep subwavelength-
scale confined electromagnetic waves (polaritons), which promise opportunities for …

[HTML][HTML] Mapping propagation of collective modes in Bi2Se3 and Bi2Te2.2Se0.8 topological insulators by near-field terahertz nanoscopy

EAA Pogna, L Viti, A Politano, M Brambilla… - Nature …, 2021 - nature.com
Near-field microscopy discloses a peculiar potential to explore novel quantum state of matter
at the nanoscale, providing an intriguing playground to investigate, locally, carrier dynamics …

Remarkable heat conduction mediated by non-equilibrium phonon polaritons

Z Pan, G Lu, X Li, JR McBride, R Juneja, M Long… - Nature, 2023 - nature.com
Surface waves can lead to intriguing transport phenomena. In particular, surface phonon
polaritons (SPhPs), which result from coupling between infrared light and optical phonons …

Tunable Planar Focusing Based on Hyperbolic Phonon Polaritons in α‐MoO3

Y Qu, N Chen, H Teng, H Hu, J Sun, R Yu… - Advanced …, 2022 - Wiley Online Library
Manipulation of the propagation and energy‐transport characteristics of subwavelength
infrared (IR) light fields is critical for the application of nanophotonic devices in …

[HTML][HTML] Active control of micrometer plasmon propagation in suspended graphene

H Hu, R Yu, H Teng, D Hu, N Chen, Y Qu… - Nature …, 2022 - nature.com
Due to the two-dimensional character of graphene, the plasmons sustained by this material
have been invariably studied in supported samples so far. The substrate provides stability …