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Phys. Rev. Lett. 90, 114501 (2003) [4 pages]

Quasiperiodic Bloch-Like States in a Surface-Wave Experiment

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M. Torres* and J. P. Adrados
Instituto de Física Aplicada, Consejo Superior de Investigaciones Científicas, Serrano 144, 28006 Madrid, Spain

J. L. Aragón†
Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Apartado Postal 1-1010, Querétaro 76000, México

P. Cobo
Instituto de Acústica, Consejo Superior de Investigaciones Científicas, Serrano 144, 28006 Madrid, Spain

S. Tehuacanero
Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, México 01000, Distrito Federal

Received 6 September 2002; published 17 March 2003

See accompanying Physics Focus

Bloch-like surface waves associated with a quasiperiodic structure are observed in a classic wave propagation experiment which consists of pulse propagation with a shallow fluid covering a quasiperiodically drilled bottom. We show that a transversal pulse propagates as a plane wave with quasiperiodic modulation, displaying the characteristic undulatory propagation in this quasiperiodic system and reinforcing the idea that analogous concepts to Bloch functions can be applied to quasicrystals under certain circumstances.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.114501
DOI:
10.1103/PhysRevLett.90.114501
PACS:
47.35.+i, 47.20.–k, 47.54.+r, 71.23.Ft

*Electronic address: manolo@iec.csic.es

†Electronic address: aragon@fata.unam.mx

 
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