A suspended Si₃N₄ nanobeam cavity is imaged with a scanning electron microscope, and the inset shows the simulated cavity mode profile. Selected for an Editors’ Suggestion.

From the article:

Strongly Nonlinear Nanocavity Exciton Polaritons in Gate-Tunable Monolayer Semiconductors
Zhi Wang, Bumho Kim, Bo Zhen, and Li He
Phys. Rev. Lett. 136, 146901 (2026)

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