Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published June 18, 2010 | Published
Journal Article Open

Discrete Breathers in One-Dimensional Diatomic Granular Crystals


We report the experimental observation of modulational instability and discrete breathers in a one-dimensional diatomic granular crystal composed of compressed elastic beads that interact via Hertzian contact. We first characterize their effective linear spectrum both theoretically and experimentally. We then illustrate theoretically and numerically the modulational instability of the lower edge of the optical band. This leads to the dynamical formation of long-lived breather structures, whose families of solutions we compute throughout the linear spectral gap. Finally, we experimentally observe the manifestation of the modulational instability and the resulting generation of localized breathing modes with quantitative characteristics that agree with our numerical results.

Additional Information

© 2010 American Physical Society. Received 13 November 2009; published 18 June 2010. We thank R. Carretero-Gonzalez for useful discussions and the NSF for support (Grants No. 0825983, No. 0844540, No. 0806762, and No. 0349023).

Attached Files

Published - Boechler2010p13067Phys_Rev_Lett.pdf


Files (680.5 kB)
Name Size Download all
680.5 kB Preview Download

Additional details

August 19, 2023
October 23, 2023