Focused ion beam characterization of deformation resulting from nanoindentation of nanoporous gold

Regions of deformation resulting from nanoindentation testing of nanoporous gold (np-Au) are characterized by cross-sectional imaging of the ligament structure directly beneath the surface, after lift-out using focused ion beam techniques. Permanent deformation of the porous structure was not exclus...

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Bibliographic Details
Published in:MRS communications 2018-03, Vol.8 (1), p.132-136
Main Authors: Briot, Nicolas J., Balk, T. John
Format: Article
Language:English
Subjects:
Biomaterials
Characterization and Evaluation of Materials
Deformation
Gold
Ion beams
Ligaments
Materials Engineering
Materials Science
Mechanical properties
Medical imaging
Metals
Nanoindentation
Nanotechnology
Polymer Sciences
Research Letter
Research Letters
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Summary:Regions of deformation resulting from nanoindentation testing of nanoporous gold (np-Au) are characterized by cross-sectional imaging of the ligament structure directly beneath the surface, after lift-out using focused ion beam techniques. Permanent deformation of the porous structure was not exclusively confined to the region directly in contact with the indenter but extended much deeper into the sample. Implications of these observations with respect to previous measurements of the mechanical properties of np-Au are discussed. The conclusions provide initial insight into the deformation behavior of np structures during nanoindentation, as well as a basis for extending this technique to other np metals.
ISSN:2159-6859
2159-6867
DOI:10.1557/mrc.2017.138