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Terahertz light confined to the nanoscale with hafnium dichalcogenides

Nature Materials volume 24, pages 1688–1689 (2025)Cite this article

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Terahertz technology has the potential to push the speed limit of future opto-electronic applications, but the large free-space wavelength of terahertz light hinders nanoscale device implementation. Now, the confinement of terahertz light to the nanometre scale is demonstrated using phonon polaritons in hafnium-based van der Waals crystals.

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Fig. 1: Observation of ultraconfined THz phonon polaritons in hafnium dichalcogenides.

References

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This is a summary of: Kowalski, R. A. et al. Ultraconfined terahertz phonon polaritons in hafnium dichalcogenides. Nat. Mater. https://doi.org/10.1038/s41563-025-02345-0 (2025).

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Terahertz light confined to the nanoscale with hafnium dichalcogenides. Nat. Mater. 24, 1688–1689 (2025). https://doi.org/10.1038/s41563-025-02353-0

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