ArticleProceedings of the National Academy of Sciences of the United States of America2020
Experimental realization of a reconfigurable electroacoustic topological insulator.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 79 citations in OpenAlex.
- All-angle acoustic topological insulators: from omnidirectional antennas to angle-tunable Klein tunneling.National science review · 2026Article
- Combinatorial asymmetric acoustic metamaterials with real-time programmability.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- A programmable platform for photonic topological insulators.Nanophotonics (Berlin, Germany) · 2025Article
- Programmable integrated photonics for topological Hamiltonians.Nature communications · 2024Article
- Valley Hall Elastic Edge States in Locally Resonant Metamaterials.Materials (Basel, Switzerland) · 2022Article
- Reprogrammable plasmonic topological insulators with ultrafast control.Nature communications · 2021Article
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Authors and funding
3 authors at 2 institutions in 2 countries.
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Abstract
A substantial challenge in guiding elastic waves is the presence of reflection and scattering at sharp edges, defects, and disorder. Recently, mechanical topological insulators have sought to overcome this challenge by supporting back-scattering resistant wave transmission. In this paper, we propose and experimentally demonstrate a reconfigurable electroacoustic topological insulator exhibiting an analog to the quantum valley Hall effect (QVHE). Using programmable switches, this phononic structure allows for rapid reconfiguration of domain walls and thus the ability to control back-scattering resistant wave propagation along dynamic interfaces for phonons lying in static and finite-frequency regimes. Accordingly, a graphene-like polyactic acid (PLA) layer serves as the host medium, equipped with periodically arranged and bonded piezoelectric (PZT) patches, resulting in two Dirac cones at the
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