Vakarelski, Ivan U.;
Edwards, Scott A.;
Dagastine, Raymond R.;
Chan, Derek Y. C.;
Stevens, Geoffrey W.;
A simple and accurate experimental method is described for determining the effective cantilever spring constant and the detector sensitivity of atomic force microscopy cantilevers on which a colloidal particle is attached. By attaching large (approximately 85 μm diameter) latex particles at various positions along the V-shaped cantilevers, we demonstrate how the normal and lateral spring constants as well as the sensitivity vary with loading position. Comparison with an explicit point-load theoretical model has also been used to verify the accuracy of the method.
Review of Scientific Instruments, Vol. 78, no. 11 (Nov 2007), article no. 116102
American Institute of Physics
Copyright © 2007 American Institute of Physics. The published version is reproduced with the permission of the publisher.