TITLE

In situ nanomechanical testing in focused ion beam and scanning electron microscopes

AUTHOR(S)
Gianola, D. S.; Sedlmayr, A.; Mönig, R.; Volkert, C. A.; Major, R. C.; Cyrankowski, E.; Asif, S. A. S.; Warren, O. L.; Kraft, O.
PUB. DATE
June 2011
SOURCE
Review of Scientific Instruments;Jun2011, Vol. 82 Issue 6, p063901
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The recent interest in size-dependent deformation of micro- and nanoscale materials has paralleled both technological miniaturization and advancements in imaging and small-scale mechanical testing methods. Here we describe a quantitative in situ nanomechanical testing approach adapted to a dual-beam focused ion beam and scanning electron microscope. A transducer based on a three-plate capacitor system is used for high-fidelity force and displacement measurements. Specimen manipulation, transfer, and alignment are performed using a manipulator, independently controlled positioners, and the focused ion beam. Gripping of specimens is achieved using electron-beam assisted Pt-organic deposition. Local strain measurements are obtained using digital image correlation of electron images taken during testing. Examples showing results for tensile testing of single-crystalline metallic nanowires and compression of nanoporous Au pillars will be presented in the context of size effects on mechanical behavior and highlight some of the challenges of conducting nanomechanical testing in vacuum environments.
ACCESSION #
62010874

 

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