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Broad modulus range nanomechanical mapping by magnetic-drive soft probes

Author

Listed:
  • Xianghe Meng

    (Harbin Institute of Technology)

  • Hao Zhang

    (Harbin Institute of Technology)

  • Jianmin Song

    (Harbin Institute of Technology)

  • Xinjian Fan

    (Harbin Institute of Technology)

  • Lining Sun

    (Harbin Institute of Technology)

  • Hui Xie

    (Harbin Institute of Technology)

Abstract

Stiffness matching between the probe and deformed portion of the sample in piezo-drive peak force modulation atomic force microscopy (AFM) limits the modulus measurement range of single probes. Here we develop a magnetic drive peak force modulation AFM to broaden the dynamic range of the probe with direct cantilever excitation. This approach not only successfully drives the softest commercial probe (6 pN nm−1) for mapping extremely soft samples in liquid but also provides an indentation force of hundreds of nanonewtons for stiff samples with a soft probe. Features of direct measurements of the indentation force and depth can unify the elastic modulus range up to four orders of magnitude, from 1 kPa to 10 MPa (in liquid) and 1 MPa to 20 GPa (in air or liquid) using a single probe. This approach can be particularly useful for analysing heterogeneous samples with large elastic modulus variations in multi-environments.

Suggested Citation

  • Xianghe Meng & Hao Zhang & Jianmin Song & Xinjian Fan & Lining Sun & Hui Xie, 2017. "Broad modulus range nanomechanical mapping by magnetic-drive soft probes," Nature Communications, Nature, vol. 8(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-02032-y
    DOI: 10.1038/s41467-017-02032-y
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    Cited by:

    1. K. S. Vikrant & G. R. Jayanth, 2022. "Diamagnetically levitated nanopositioners with large-range and multiple degrees of freedom," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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