Fig. 2 | Nature Communications

Fig. 2

From: Observation of a topological nodal surface and its surface-state arcs in an artificial acoustic crystal

Fig. 2The alternative text for this image may have been generated using AI.

Observation of a topological nodal surface and Weyl points. a Schematic of the experimental setup. The sound pressure field distribution is measured along an x–z plane passing through the middle of the sample, with the source located 4 cm away from the plane in the y-direction. b Projection of the Brillouin zone onto the 2D measurement plane. The green plane (line) and red dots indicate the projected nodal surface and Weyl points, respectively. The red lines denote the surface-state arcs that connect the topological nodal surface to each Weyl point. c, d Measured and simulated projected band spectra. The color bar in (c) indicates the energy intensity

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