The automation of robust interatomic-force measurements
John Elie Sader
Review of Scientific Instruments | AIP Publishing | Published : 2020
Interatomic-force measurements are regularly performed using frequency-modulation atomic force microscopy. This requires conversion of the observed shift in the resonant frequency of a force-sensing cantilever to the actual force experienced by its tip. Recently, Sader et al. [Nat. Nanotechnol. 13, 1088 (2018)] showed that this force conversion can be unreliable and proposed the inflection point test to identify valid and robust force data. Efficient and user-friendly algorithms are required for its routine practical implementation, which currently do not exist. Here, we (1) advance the theoretical framework of the inflection point test, (2) develop the required efficient algorithms for its ..View full abstract
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Awarded by Australian Research Council Centre of Excellence in Exciton Science
Any updates to the software will be available from the author, to whom feedback should be sent. The author thanks Ferdinand Huber and Franz Giessibl for providing their experimental data and interesting discussions, which motivated this work. Support from the Australian Research Council Centre of Excellence in Exciton Science (Grant No. CE170100026) and the Australian Research Council Grants Scheme is also gratefully acknowledged.