Nanometer-precision non-local deformation reconstruction using nanodiamond sensing

Kangwei Xia, Chu-Feng Liu, Weng-Hang Leong, Man-Hin Kwok, Zhi-Yuan Yang, Xi Feng, Ren-Bao Liu () and Quan Li ()
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Kangwei Xia: The Chinese University of Hong Kong, Shatin, New Territories
Chu-Feng Liu: The Chinese University of Hong Kong, Shatin, New Territories
Weng-Hang Leong: The Chinese University of Hong Kong, Shatin, New Territories
Man-Hin Kwok: The Chinese University of Hong Kong, Shatin, New Territories
Zhi-Yuan Yang: The Chinese University of Hong Kong, Shatin, New Territories
Xi Feng: The Chinese University of Hong Kong, Shatin, New Territories
Ren-Bao Liu: The Chinese University of Hong Kong, Shatin, New Territories
Quan Li: The Chinese University of Hong Kong, Shatin, New Territories

Nature Communications, 2019, vol. 10, issue 1, 1-9

Abstract: Abstract Spatially resolved information about material deformation upon loading is critical to evaluating mechanical properties of materials, and to understanding mechano-response of live systems. Existing techniques may access local properties of materials at nanoscale, but not at locations away from the force-loading positions. Moreover, interpretation of the local measurement relies on correct modeling, the validation of which is not straightforward. Here we demonstrate an approach to evaluating non-local material deformation based on the integration of nanodiamond orientation sensing and atomic force microscopy nanoindentation. This approach features a 5 nm precision in the loading direction and a sub-hundred nanometer lateral resolution, high enough to disclose the surface/interface effects in the material deformation. The non-local deformation profile can validate the models needed for mechanical property determination. The non-local nanometer-precision sensing of deformation facilitates studying mechanical response of complex material systems ranging from impact transfer in nanocomposites to mechano-response of live systems.

Date: 2019
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DOI: 10.1038/s41467-019-11252-3

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