Active topolectrical circuits
Name
pnas.2106411118.pdf
Description
Published version
Size
1.98 MB
Format
Adobe PDF
Checksum (MD5)
49c1ae13002611bc1afd213601ec4ed3
Author(s)
Kotwal, Tejas
Moseley, Fischer
Stegmaier, Alexander
Imhof, Stefan
Brand, Hauke
Kießling, Tobias
Thomale, Ronny
Ronellenfitsch, Henrik
Dunkel, Jörn
Date Issued
2021
Journal
Proceedings of the National Academy of Sciences of the United States of America
Publisher
Proceedings of the National Academy of Sciences
Citation
Kotwal, Tejas, Moseley, Fischer, Stegmaier, Alexander, Imhof, Stefan, Brand, Hauke et al. 2021. "Active topolectrical circuits." Proceedings of the National Academy of Sciences of the United States of America, 118 (32).
Version
Final published version
Abstract
Significance
Originally discovered in condensed-matter physics, topological protection has become a unifying paradigm for understanding robust localized wave propagation in electronic, optical, acoustic, and even geophysical systems. The excitation of topologically protected waves in passive matter typically requires external forcing in a specific frequency range. Here, we show both theoretically and experimentally that robust topological edge modes can be spontaneously self-excited in active systems made from internally powered subunits. Presenting different realizations of active nonlinear electronic circuits, we demonstrate the emergence of self-organized topological wave patterns, in close agreement with predictions from a generic mathematical model. More broadly, these results can provide guidance for designing autonomous active systems with topologically protected signaling and transmission properties.
Originally discovered in condensed-matter physics, topological protection has become a unifying paradigm for understanding robust localized wave propagation in electronic, optical, acoustic, and even geophysical systems. The excitation of topologically protected waves in passive matter typically requires external forcing in a specific frequency range. Here, we show both theoretically and experimentally that robust topological edge modes can be spontaneously self-excited in active systems made from internally powered subunits. Presenting different realizations of active nonlinear electronic circuits, we demonstrate the emergence of self-organized topological wave patterns, in close agreement with predictions from a generic mathematical model. More broadly, these results can provide guidance for designing autonomous active systems with topologically protected signaling and transmission properties.
MIT Department
Massachusetts Institute of Technology. Department of Mathematics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1073/PNAS.2106411118
