To increase measurement throughput of atomic force microscopy (AFM), multiple cantilevers can be placed in close proximity to form an array for parallel throughput. In this paper, we have measured the relationship between amplitude and tip-sample separation distance for an array of AFM cantilevers on a shared base actuated at a constant frequency and amplitude. The data show that discontinuous jumps in output amplitude occur within the response of individual beams. This is a phenomenon that does not occur for a standard, single beam system. To gain a better understanding of the coupled array response, a macroscale experiment and mathematical model are used to determine how parameter space alters the measured amplitude. The results demonstrate that a cusp catastrophe bifurcation occurs due to changes in individual beam resonant frequency, as well as significant zero-frequency coupling at the point of jump-to-contact. Both of these phenomena are shown to account for the amplitude jumps observed in the AFM array.
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September 2017
Research-Article
Identification and Analysis of Artifacts in Amplitude Modulated Atomic Force Microscopy Array Operation
Samuel Jackson,
Samuel Jackson
Department of Mechanical Engineering,
University of Canterbury,
Christchurch 8041, New Zealand
e-mail: samuel.jackson@pg.canterbury.ac.nz
University of Canterbury,
Christchurch 8041, New Zealand
e-mail: samuel.jackson@pg.canterbury.ac.nz
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Stefanie Gutschmidt
Stefanie Gutschmidt
Department of Mechanical Engineering,
University of Canterbury,
Christchurch 8041, New Zealand
e-mail: stefanie.gutschmidt@canterbury.ac.nz
University of Canterbury,
Christchurch 8041, New Zealand
e-mail: stefanie.gutschmidt@canterbury.ac.nz
Search for other works by this author on:
Samuel Jackson
Department of Mechanical Engineering,
University of Canterbury,
Christchurch 8041, New Zealand
e-mail: samuel.jackson@pg.canterbury.ac.nz
University of Canterbury,
Christchurch 8041, New Zealand
e-mail: samuel.jackson@pg.canterbury.ac.nz
Stefanie Gutschmidt
Department of Mechanical Engineering,
University of Canterbury,
Christchurch 8041, New Zealand
e-mail: stefanie.gutschmidt@canterbury.ac.nz
University of Canterbury,
Christchurch 8041, New Zealand
e-mail: stefanie.gutschmidt@canterbury.ac.nz
Contributed by the Design Engineering Division of ASME for publication in the JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS. Manuscript received November 6, 2016; final manuscript received April 11, 2017; published online May 17, 2017. Assoc. Editor: Anindya Chatterjee.
J. Comput. Nonlinear Dynam. Sep 2017, 12(5): 051018 (7 pages)
Published Online: May 17, 2017
Article history
Received:
November 6, 2016
Revised:
April 11, 2017
Citation
Jackson, S., and Gutschmidt, S. (May 17, 2017). "Identification and Analysis of Artifacts in Amplitude Modulated Atomic Force Microscopy Array Operation." ASME. J. Comput. Nonlinear Dynam. September 2017; 12(5): 051018. https://doi.org/10.1115/1.4036520
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