Active acoustic switches using two-dimensional granular crystals
Wu Q, Cui C, Bertrand T, Shattuck MD, O'Hern CS. Active acoustic switches using two-dimensional granular crystals. Physical Review E 2019, 99: 062901. PMID: 31330653, DOI: 10.1103/physreve.99.062901.Peer-Reviewed Original ResearchTwo-dimensional granular crystalsFrequency band gapsBand gapPressure-induced switchingAcoustic switchGranular crystalsLarge-frequency band gapsDifferent massesCircular grainsInterparticle contact networkMaximal band gapsVibration experimentsSteel beadsContact breakingVibrational responseNumerical simulationsOutput signalSimulation resultsUmbrella sampling techniqueInput signalMass contrastSonic crystalsSwitching timeCrystalsSingle grain