Edge modes supported by self-inductive or capacitive impedance surfaces

Line wave as a mode that has damping behavior in any transverse direction has recently attracted much attention. To implement this mode, complementary metasurfaces that have dual impedances may be used. The high concentration of the field is observed on the line that forms the interface of two complimentary metasurfaces. Singularity of fields is a fundamental property of a line mode. Meanwhile, this feature is absent from conventional edge mods. Another appealing property of line waves and in general waveguides implemented by metasurfaces is their wide bandwidth. Implementation of these waves has not been investigated by non-complementary surfaces, so far. Here we examine two possible scenarios in which purely capacitive or inductive impedance surfaces are used to generally guide the edge modes which may resemble line waves.