Measurement of Poisson's ratio with contact-resonance atomic force microscopy

D. C. Hurley, J. A. Turner

Research output: Contribution to journalArticle

42 Scopus citations

Abstract

We describe contact-resonance atomic force microscopy (AFM) methods to quantitatively measure Poisson's ratio or shear modulus G at the same time as Young's modulus E. In contact-resonance AFM, the frequencies of the cantilever's resonant vibrations are measured while the tip is in contact with the sample. Simultaneous measurement of flexural and torsional vibrational modes enables E and to be determined separately. Analysis methods are presented to relate the contact-resonance frequencies to the tip-sample contact stiffness, which in turn determines the sample's nanoscale elastic properties. Experimental results are presented for a glass specimen with fused silica used as a reference material. The agreement between our contact-resonance AFM measurements and values obtained from other means demonstrates the validity of the basic method.

Original languageEnglish (US)
Article number033509
JournalJournal of Applied Physics
Volume102
Issue number3
DOIs
StatePublished - Aug 24 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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