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Title: Note: Calibration of atomic force microscope cantilevers using only their resonant frequency and quality factor

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 implemented to perform fast, robust, and non-invasive spring constant calibration.
Authors:
 [1] ;  [2] ;  [3]
  1. Department of Mathematics and Statistics, The University of Melbourne, Victoria 3010 (Australia)
  2. School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3001 (Australia)
  3. (United States)
Publication Date:
OSTI Identifier:
22392248
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCURACY; AIR; ATOMIC FORCE MICROSCOPY; CALIBRATION; FUNCTIONS; LASERS; PERFORMANCE; QUALITY FACTOR; SPRINGS