Phase-driven progress in nanophotonic biosensing

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2024年3月18日

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Isabel Barth,
Hakho Lee

摘要

In the continuous pursuit of enhancing the sensitivity of nanophotonic biosensors by leveraging phase phenomena, a recent development involved the engineering of an atomically thin Ge₂Sb₂Te₅ layer on a silver nanofilm to generate large Goos–Hänchen-shifts associated with phase singularities. The resulting detection limit reached ~7 × 10⁻⁷ RIU.