IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v9y2018i1d10.1038_s41467-018-03396-5.html
   My bibliography  Save this article

Microscopic mechanisms of deformation transfer in high dynamic range branched nanoparticle deformation sensors

Author

Listed:
  • Shilpa N. Raja

    (Lawrence Berkeley National Laboratory
    University of California at Berkeley
    Massachusetts Institute of Technology)

  • Xingchen Ye

    (University of California at Berkeley
    Indiana University-Bloomington)

  • Matthew R. Jones

    (University of California at Berkeley
    Rice University)

  • Liwei Lin

    (University of California at Berkeley)

  • Sanjay Govindjee

    (University of California at Berkeley)

  • Robert O. Ritchie

    (Lawrence Berkeley National Laboratory
    University of California at Berkeley
    University of California at Berkeley)

Abstract

Nanoscale stress sensing is of crucial importance to biomechanics and other fields. An ideal stress sensor would have a large dynamic range to function in a variety of materials spanning orders of magnitude of local stresses. Here we show that tetrapod quantum dots (tQDs) exhibit excellent sensing versatility with stress-correlated signatures in a multitude of polymers. We further show that tQDs exhibit pressure coefficients, which increase with decreasing polymer stiffness, and vary >3 orders of magnitude. This high dynamic range allows tQDs to sense in matrices spanning >4 orders of magnitude in Young’s modulus, ranging from compliant biological levels (~100 kPa) to stiffer structural polymers (~5 GPa). We use ligand exchange to tune filler-matrix interfaces, revealing that inverse sensor response scaling is maintained upon significant changes to polymer-tQD interface chemistry. We quantify and explore mechanisms of polymer-tQD strain transfer. An analytical model based on Mori-Tanaka theory presents agreement with observed trends.

Suggested Citation

  • Shilpa N. Raja & Xingchen Ye & Matthew R. Jones & Liwei Lin & Sanjay Govindjee & Robert O. Ritchie, 2018. "Microscopic mechanisms of deformation transfer in high dynamic range branched nanoparticle deformation sensors," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03396-5
    DOI: 10.1038/s41467-018-03396-5
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-018-03396-5
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-018-03396-5?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
    ---><---

    More about this item

    Statistics

    Access and download statistics

    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:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03396-5. 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.