The invention discloses a double-layer C6v lattice
metamaterial sensor based on a three-dimensional
metal printing technology, which comprises a first periodic lattice structure, a first substrate, a second periodic lattice structure, a second substrate and a third periodic lattice structure which are integrally formed by three-dimensional
metal printing. The second periodic lattice structure is arranged between the lower surface of the first substrate and the upper surface of the second substrate; the first periodic lattice structure is arranged on the upper surface of the first substrate, and the third periodic lattice structure is arranged on the lower surface of the second substrate. In the
design process, rich physical effects in condensed
physics are ingeniously combined with the traditional acoustic
waveguide structure design. In condensed state
physics, due to structural periodicity and Bragg scattering, energy is in strip distribution in a
reciprocal lattice vector space, so that propagation of the energy can be effectively regulated and controlled, and the
signal fidelity and the
signal-to-
noise ratio of a traditional acoustic device are improved.