IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v564y2018i7735d10.1038_s41586-018-0764-0.html
   My bibliography  Save this article

Experimental realization of on-chip topological nanoelectromechanical metamaterials

Author

Listed:
  • Jinwoong Cha

    (ETH Zurich
    California Institute of Technology)

  • Kun Woo Kim

    (Korea Institute for Advanced Study)

  • Chiara Daraio

    (California Institute of Technology)

Abstract

Guiding waves through a stable physical channel is essential for reliable information transport. However, energy transport in high-frequency mechanical systems, such as in signal-processing applications1, is particularly sensitive to defects and sharp turns because of back-scattering and losses2. Topological phenomena in condensed matter systems have shown immunity to defects and unidirectional energy propagation3. Topological mechanical metamaterials translate these properties into classical systems for efficient phononic energy transport. Acoustic and mechanical topological metamaterials have so far been realized only in large-scale systems, such as arrays of pendulums4, gyroscopic lattices5,6, structured plates7,8 and arrays of rods, cans and other structures acting as acoustic scatterers9–12. To fulfil their potential in device applications, mechanical topological systems need to be scaled to the on-chip level for high-frequency transport13–15. Here we report the experimental realization of topological nanoelectromechanical metamaterials, consisting of two-dimensional arrays of free-standing silicon nitride nanomembranes that operate at high frequencies (10–20 megahertz). We experimentally demonstrate the presence of edge states, and characterize their localization and Dirac-cone-like frequency dispersion. Our topological waveguides are also robust to waveguide distortions and pseudospin-dependent transport. The on-chip integrated acoustic components realized here could be used in unidirectional waveguides and compact delay lines for high-frequency signal-processing applications.

Suggested Citation

  • Jinwoong Cha & Kun Woo Kim & Chiara Daraio, 2018. "Experimental realization of on-chip topological nanoelectromechanical metamaterials," Nature, Nature, vol. 564(7735), pages 229-233, December.
  • Handle: RePEc:nat:nature:v:564:y:2018:i:7735:d:10.1038_s41586-018-0764-0
    DOI: 10.1038/s41586-018-0764-0
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41586-018-0764-0
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.

    File URL: https://libkey.io/10.1038/s41586-018-0764-0?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Hengjiang Ren & Tirth Shah & Hannes Pfeifer & Christian Brendel & Vittorio Peano & Florian Marquardt & Oskar Painter, 2022. "Topological phonon transport in an optomechanical system," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    2. Simone Zanotto & Giorgio Biasiol & Paulo V. Santos & Alessandro Pitanti, 2022. "Metamaterial-enabled asymmetric negative refraction of GHz mechanical waves," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    3. Juliane Doster & Tirth Shah & Thomas Fösel & Philipp Paulitschke & Florian Marquardt & Eva M. Weig, 2022. "Observing polarization patterns in the collective motion of nanomechanical arrays," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    4. Weitao Yuan & Chenwen Yang & Danmei Zhang & Yang Long & Yongdong Pan & Zheng Zhong & Hong Chen & Jinfeng Zhao & Jie Ren, 2021. "Observation of elastic spin with chiral meta-sources," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    5. Ji-Qian Wang & Zi-Dong Zhang & Si-Yuan Yu & Hao Ge & Kang-Fu Liu & Tao Wu & Xiao-Chen Sun & Le Liu & Hua-Yang Chen & Cheng He & Ming-Hui Lu & Yan-Feng Chen, 2022. "Extended topological valley-locked surface acoustic waves," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:564:y:2018:i:7735:d:10.1038_s41586-018-0764-0. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.