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. 2021 Dec 10;12:7201. doi: 10.1038/s41467-021-26414-5

Fig. 6. The photograph of fabricated sample and experimental results for the hybrid 3D skin-topological-topological (STT) effect and 3D skin-skin-skin (SSS) effect.

Fig. 6

a The photograph of the electric circuit of the 3D SSS corner effect. b, c The enlarged view of the unit cells for the hybrid 3D STT effect in (b) and the 3D SSS effect in (c). Arrows with different colors are the same as INICs labeled in Fig. 1(d). The values of the capacitors and inductors are the same as theoretical design. d, e The voltage distributions at the resonance frequency for hybrid 3D STT effect and 3D SSS effect in (d) and (e), respectively. Big arrows in (c) show the directions of skin and topological pumping. Big arrows in (d) show the directions of skin pumping.