Note: Calibration of atomic force microscope cantilevers using only their resonant frequency and quality factor
John E Sader, James R Friend
REVIEW OF SCIENTIFIC INSTRUMENTS | AMER INST PHYSICS | Published : 2014
A simplified method for calibrating atomic force microscope cantilevers was recently proposed by Sader et al. [Rev. Sci. Instrum. 83, 103705 (2012); Sec. III D] that relies solely on the resonant frequency and quality factor of the cantilever in fluid (typically air). This method eliminates the need to measure the hydrodynamic function of the cantilever, which can be time consuming given the wide range of cantilevers now available. Using laser Doppler vibrometry, we rigorously assess the accuracy of this method for a series of commercially available cantilevers and explore its performance under non-ideal conditions. This shows that the simplified method is highly accurate and can be easily i..View full abstract
The authors gratefully acknowledge support from the Australian Research Council Grants Scheme. J.R.F. is grateful to RMIT University for a Vice-Chancellor's Senior Research Fellowship.