Abstract
A new application of third sound for the study of wave propagation in quasiperiodic systems has been developed. The advantages of the present method are: 1) Small attenuation of third sound and well-controlled fabrication of scatterers ensure the long phase-coherence length. 2) One- and two-dimensional quasiperiodic lattices can be studied. Transmission spectrum of third sound in the Penrose lattice (two-dimensional quasiperiodic lattice) has been obtained for the first time.
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