Calibration of rectangular atomic force microscope cantilevers
نویسندگان
چکیده
A method to determine the spring constant of a rectangular atomic force microscope cantilever is proposed that relies solely on the measurement of the resonant frequency and quality factor of the cantilever in fluid ~typically air!, and knowledge of its plan view dimensions. This method gives very good accuracy and improves upon the previous formulation by Sader et al. @Rev. Sci. Instrum. 66, 3789 ~1995!# which, unlike the present method, requires knowledge of both the cantilever density and thickness. © 1999 American Institute of Physics. @S0034-6748~99!04210-0#
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