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Internal resonance based sensing in non-contact atomic force microscopy

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2 Author(s)
Hacker, E. ; Department of Mechanical Engineering, Technion–Israel Institute of Technology, Haifa 32000, Israel ; Gottlieb, O.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.4739416 

In this letter, the nonlinear dynamics of a non-uniform micro-cantilever for atomic force microscopy is investigated numerically for a non-contact mode of operation. A step-like heterogeneity in the cantilever longitudinal direction yields conditions for both 3:1 and 2:1 internal resonances that govern quasiperiodic energy transfer between the first and second structural bending modes. Thus, quasiperiodic micro-cantilever response can enable multiple function sensing, and possible increased accuracy of time-varying forces via single frequency base excitation.

Published in:

Applied Physics Letters  (Volume:101 ,  Issue: 5 )

Date of Publication:

Jul 2012

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