TY - GEN
T1 - Double-Negative Temporal Acoustic Metamaterials
AU - Lasri, O.
AU - Sirota, L.
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Metamaterials with temporal modulation of constitutive parameters have recently emerged to the scientific spotlight, featuring the novel concept of temporal boundaries. These boundaries, which are artificial by spatial means, cause in-domain wave reflection and transmission at a temporal frequency different from that of the source, in contrast to the case of spatial boundaries or interfaces. Here we study a new form of temporal modulation, which drives the system from a dispersionless to a dispersive state in both constitutive parameters, supporting the so-called Drude model. We demonstrate that the resulting temporal boundary generates waves simultaneously in two different dynamical regimes, double-negative and double-positive, for a single frequency source, which is an otherwise unachievable response.
AB - Metamaterials with temporal modulation of constitutive parameters have recently emerged to the scientific spotlight, featuring the novel concept of temporal boundaries. These boundaries, which are artificial by spatial means, cause in-domain wave reflection and transmission at a temporal frequency different from that of the source, in contrast to the case of spatial boundaries or interfaces. Here we study a new form of temporal modulation, which drives the system from a dispersionless to a dispersive state in both constitutive parameters, supporting the so-called Drude model. We demonstrate that the resulting temporal boundary generates waves simultaneously in two different dynamical regimes, double-negative and double-positive, for a single frequency source, which is an otherwise unachievable response.
UR - http://www.scopus.com/inward/record.url?scp=85142783592&partnerID=8YFLogxK
U2 - 10.1109/Metamaterials54993.2022.9920815
DO - 10.1109/Metamaterials54993.2022.9920815
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AN - SCOPUS:85142783592
T3 - 2022 16th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2022
SP - X253-X255
BT - 2022 16th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 16th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2022
Y2 - 12 September 2022 through 17 September 2022
ER -