ArticleNanophotonics (Berlin, Germany)2024
Lithography-free directional control of thermal emission.
Article in Nanophotonics (Berlin, Germany), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Deep learning design of nanoscale polariton propagations in twisted van der Waals multilayers.Nature materials · 2026Article
- Broadband Radiative Heat Transfer Suppression via Dispersion-Engineered Metasurfaces.Nature communications · 2026Article
- Spectral Tuning of Hyperbolic Shear Polaritons in Monoclinic Gallium Oxide via Isotopic Substitution.Advanced materials (Deerfield Beach, Fla.) · 2026Article
- Characterization of the 3D-Optical Properties of van der Waals Materials with Deep Learning-Based Coherent Fourier Scatterometry.ACS photonics · 2026Article
- Roadmap for Photonics with 2D Materials.ACS photonics · 2025Review
- Real-Space Visualization of Canalized Ray Polaritons in a Single Van der Waals Thin Slab.Nano letters · 2025Article
- Ultra-broadband directional thermal emission.Nanophotonics (Berlin, Germany) · 2024Article
- Thermal photonics for sustainability.Nanophotonics (Berlin, Germany) · 2024Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Blackbody radiation is incoherent and omnidirectional, whereas various novel applications in renewable energy require a degree of directional control of a thermally emitted beam. So far, such directional control has required nano-structuring the surface of a thermally emitting material, typically by forming diffraction gratings. This, however, necessitates lithography and usually results in polarization-dependent properties. Here, we derive analytical conditions for highly directional thermal emission using a planar 3-layer structure analogous to a Salisbury screen. We present design rules for maximizing the directionality of such structures. Notably, these design rules pertain to both linear polarizations, thus generalizing the principles of a grating for unpolarized light. We show that the key requirement to achieve such performance is ultra-high quality factor resonances in materials supporting phonon polaritonic modes, as those found in low-dimensional materials. We propose a realistic device based on hexagonal Boron Nitride and predict performances comparable to lithography-based nano-structures.
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