Figure 7: Hexagonal lattice of the trimer metamolecules. | Nature Communications

Figure 7: Hexagonal lattice of the trimer metamolecules.

From: Floquet topological insulators for sound

Figure 7

The metamolecules are composed of acoustic cavities indexed as 1, 2 and 3. Blue links show inner connections between the cavities with the strength of coupling (on-site hopping) κ, and the red lines show the nearest-neighbour (off-site) hopping J between metamolecules.

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