Integration of 2D Materials in Radial van der Waals Heterostructure Metasurfaces
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2025
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| author | Heimig, Connor Biechteler, Jonas Cruciano, Cristina Genco, Armando Weber, Thomas Hirler, Michael Gryb, Dmytro Antonov, Alexander A. Menezes, Leonardo de S. Valentini, Gianluca Manzoni, Cristian Cerullo, Giulio Maier, Stefan A. Sortino, Luca Tittl, Andreas |
| author_facet | Heimig, Connor Biechteler, Jonas Cruciano, Cristina Genco, Armando Weber, Thomas Hirler, Michael Gryb, Dmytro Antonov, Alexander A. Menezes, Leonardo de S. Valentini, Gianluca Manzoni, Cristian Cerullo, Giulio Maier, Stefan A. Sortino, Luca Tittl, Andreas |
| contents | Two-dimensional semiconductors, such as monolayer transition metal dichalcogenides (TMDC), exhibit strong excitonic transitions at room temperature and offer a unique platform for exploring light-matter interactions in nanoscale photonic systems. In this work, we demonstrate a compact and polarization-invariant photonic metasurface, fabricated from hexagonal boron-nitride (hBN) and based on radial bound states in the continuum (BIC), which are formed by radially distributed pairs of structurally asymmetric resonators. The metasurface employs multiple symmetry-breaking perturbations to support high quality-(Q-)factor resonances within a footprint smaller than 8 x 8 $μm^2$ - one-sixth of the area of previous approaches. Compared to established hBN metasurface designs, the radial geometry furthermore achieves significantly higher Q-factors with a reduced footprint. By integrating the hBN photonic structure with a WS$_2$ monolayer, we observe enhanced photoluminescence when its resonance is spectrally aligned with the exciton resonance, accompanied by signatures of discrete momentum-space patterns that identify the orbital-angular-momentum-carrying ring eigenmodes. These features persist over a wide range of excitation powers and show minimal linewidth broadening, indicating robust and spatially modulated exciton-photon coupling. This work establishes a scalable approach for generating hybrid photonic-excitonic states with momentum-space structure, offering new opportunities for exciton localization, valley emission, spatially programmable light-matter interaction in two-dimensional material platforms and compact luminescent devices based on 2D material-integrated metasurfaces. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_22410 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Integration of 2D Materials in Radial van der Waals Heterostructure Metasurfaces Heimig, Connor Biechteler, Jonas Cruciano, Cristina Genco, Armando Weber, Thomas Hirler, Michael Gryb, Dmytro Antonov, Alexander A. Menezes, Leonardo de S. Valentini, Gianluca Manzoni, Cristian Cerullo, Giulio Maier, Stefan A. Sortino, Luca Tittl, Andreas Optics Mesoscale and Nanoscale Physics Materials Science Two-dimensional semiconductors, such as monolayer transition metal dichalcogenides (TMDC), exhibit strong excitonic transitions at room temperature and offer a unique platform for exploring light-matter interactions in nanoscale photonic systems. In this work, we demonstrate a compact and polarization-invariant photonic metasurface, fabricated from hexagonal boron-nitride (hBN) and based on radial bound states in the continuum (BIC), which are formed by radially distributed pairs of structurally asymmetric resonators. The metasurface employs multiple symmetry-breaking perturbations to support high quality-(Q-)factor resonances within a footprint smaller than 8 x 8 $μm^2$ - one-sixth of the area of previous approaches. Compared to established hBN metasurface designs, the radial geometry furthermore achieves significantly higher Q-factors with a reduced footprint. By integrating the hBN photonic structure with a WS$_2$ monolayer, we observe enhanced photoluminescence when its resonance is spectrally aligned with the exciton resonance, accompanied by signatures of discrete momentum-space patterns that identify the orbital-angular-momentum-carrying ring eigenmodes. These features persist over a wide range of excitation powers and show minimal linewidth broadening, indicating robust and spatially modulated exciton-photon coupling. This work establishes a scalable approach for generating hybrid photonic-excitonic states with momentum-space structure, offering new opportunities for exciton localization, valley emission, spatially programmable light-matter interaction in two-dimensional material platforms and compact luminescent devices based on 2D material-integrated metasurfaces. |
| title | Integration of 2D Materials in Radial van der Waals Heterostructure Metasurfaces |
| topic | Optics Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2511.22410 |