Natural 2D talc crystals support tunable hyperbolic phonon-polaritons at mid-IR wavelengths with long mode lifetimes, shown via s-SNOM and SINS measurements.
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Two-dimensional talc as a natural hyperbolic material
Natural 2D talc crystals support tunable hyperbolic phonon-polaritons at mid-IR wavelengths with long mode lifetimes, shown via s-SNOM and SINS measurements.