Micromorphic continuum elasticity for critical mechanical metamaterials yields a topological invariant equal to the difference in zero-energy edge modes on opposing boundaries, with decay lengths set by the square of the surface wavelength.
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Topological elasticity of flexible structures
Micromorphic continuum elasticity for critical mechanical metamaterials yields a topological invariant equal to the difference in zero-energy edge modes on opposing boundaries, with decay lengths set by the square of the surface wavelength.