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Acceleration of Subwavelength Polaritons by Engineering Dielectric-Metallic Substrates

Brazilian Center for Research in Energy and Materials (CNPEM); Universidade Estadual Paulista (Unesp); Universidade Estadual de Campinas (UNICAMP) (2020-06-17)

By synchrotron infrared nanospectroscopy, we demonstrate modulation of momentum and group velocity of subdiffractional hyperbolic phonon-polaritons (HP2), in hexagonal boron nitride nanocrystals, by varying the SiO2 film ...