Figure 3 | Schematic of the Designed YMM Cylinder for Realizing HOTI and Corresponding Experimental Observations. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 3 | Schematic of the Designed YMM Cylinder for Realizing HOTI and Corresponding Experimental Observations.

Caption

Figure 3 | Schematic of the Designed YMM Cylinder for Realizing HOTI and Corresponding Experimental Observations.  (a) Schematic of the YMM cylinder, with one unit cell highlighted and zoomed in. The inset shows the top view and side view of the metallic helix unit cell. (b) Dispersion spectra along the axial direction for the square metamaterial cylinder, with the isolated hinge state within the surface bandgap highlighted in orange. (c) Field distributions corresponding to four representative eigenstates, highlighted by circles in panel (b). (d) Photograph of the YMM sample, fabricated using printed circuit board technology, with side boundaries highlighted by the red and blue boxes. (e) Simulated (left) and measured (right) dispersion spectra for hinge states. (f) The hinge field distributions, measured on two adjacent side boundaries of the square YMM cylinder sample.

Credit

He, C., Zhao, L., Zhang, S. et al.

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