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Published March 1, 2021 | Submitted + Supplemental Material + Published
Journal Article Open

Experimental realization of phonon demultiplexing in three-dimensions


Phononic metamaterials enabled the realization of many acoustic components analogous to their electronic counterparts, such as transistors, logic gates, and calculators. A key component among these is the demultiplexer, a device that receives multiple signals and sorts them based on their frequencies into separate channels. Previous experimental realizations of acoustic and elastic multiplexers have employed plates with pillars or holes to demultiplex frequencies. However, existing realizations are confined to two dimensions, which can limit potential acoustic or elastic circuit design. Here, we show an experimental realization of a three-dimensional, four channel phononic demultiplexer. Our design methodology is based on bundles of pass-bands within a large bandgap that can easily be tuned for multi-channel frequency demultiplexing. The proposed design can be utilized in acoustic and elastic information processing, nondestructive evaluation, and communication applications, among others.

Additional Information

© 2021 Published under license by AIP Publishing. Submitted: 24 September 2020; Accepted: 11 February 2021; Published Online: 2 March 2021. This Paper is part of the APL Special Collection on Metastructures: From Physics to Applications. The authors are very grateful for the fruitful discussions with Dr. Foehr and his help with the experimental setup. C. D. acknowledges support from the National Science Foundation under EFRI Grant No. 1741565. O. R. B. acknowledges support from the University of Connecticut start-up funds. Data Availability: All the data supporting the findings in this study are available in this article and its supporting information. Further data and methods are available from the corresponding author upon reasonable request.

Attached Files

Published - 091901_1_online.pdf

Submitted - 2009_12025.pdf

Supplemental Material - si_unmarked.pdf


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October 3, 2023
October 24, 2023