REFRACTIVE-INDEX SENSOR AND METHOD

    公开(公告)号:US20210223170A1

    公开(公告)日:2021-07-22

    申请号:US17055833

    申请日:2019-05-13

    IPC分类号: G01N21/41 G02B1/00

    摘要: A method for measuring a refractive index of a medium includes exciting a first antisymmetric resonance of a first metasurface, including a first periodic array of resonators formed on a substrate surface, with illumination incident on the first metasurface at a non-normal incidence angle with respect to the substrate surface, the first metasurface including the medium encapsulating the first periodic array of resonators. The method also includes determining a refractive index of the medium from a first amplitude of a first transmitted signal that includes a portion of the illumination transmitted through the first metasurface.

    REFRACTIVE-INDEX SENSOR AND METHOD

    公开(公告)号:US20220128464A1

    公开(公告)日:2022-04-28

    申请号:US17567677

    申请日:2022-01-03

    IPC分类号: G01N21/41 G02B1/00

    摘要: A method for measuring a refractive index of a medium includes exciting a first antisymmetric resonance of a first metasurface, including a first periodic array of resonators formed on a substrate surface, with illumination incident on the first metasurface at a non-normal incidence angle with respect to the substrate surface, the first metasurface including the medium encapsulating the first periodic array of resonators. The method also includes determining a refractive index of the medium from a first amplitude of a first transmitted signal that includes a portion of the illumination transmitted through the first metasurface.