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15 April 1997 Characterization of application-specific probes for SPMs
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This paper addresses the problem of determining the absolute force constant of Atomic Force Microscope cantilevers. In the method presented, the cantilever under test is deflected against a reference cantilever of known spring constant. The relative deflection of the two cantilevers is related to their spring constants. The novelty of our approach is in the use of a micromachined reference cantilever of a precisely controlled force constant. Preliminary results show that our method is capable of measuring the force constant of cantilevers in the range of 0.1 to 10 N/m with an accuracy of better than 20%. The error is dominated by the non-linear effects in the force versus distance curves used for the measurement.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marco Tortonese and Michael Kirk "Characterization of application-specific probes for SPMs", Proc. SPIE 3009, Micromachining and Imaging, (15 April 1997);

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