Research Article: Drift-insensitive distributed calibration of probe microscope scanner in nanometer range: Approach description

R. V. Lapshin, Drift-insensitive distributed calibration of probe microscope scann..., Applied Surface Science, vol. 359, pp. 629-636, 2015 (DOI: 10.1016/j.apsusc.2015.10.108)

Abstract: The method of distributed calibration of a probe microscope scanner consists in a search for a net of local calibration coefficients (LCCs) in the process of automatic measurement of a standard surface, whereby each point of the movement space of the scanner can be defined by a unique set of scale factors. Feature-oriented scanning (FOS) methodology is used to implement the distributed calibration, which permits to exclude in situ the negative influence of thermal drift, creep and hysteresis on the obtained results. The sensitivity of LCCs to errors in determination of position coordinates of surface features forming the local calibration structure (LCS) is eliminated by performing multiple repeated measurements followed by building regression surfaces. There are no principle restrictions on the number of repeated LCS measurements. Possessing the calibration database enables correcting in one procedure all the spatial distortions caused by nonlinearity, nonorthogonality and spurious crosstalk couplings of the microscope scanner piezomanipulators. To provide high precision of spatial measurements in nanometer range, the calibration is carried out using natural standards – constants of crystal lattice. The method may be used with any scanning probe instrument.

Keywords: STM, AFM, SPM, Scanner, Calibration, Drift, Creep, Nonlinearity, Nonorthogonality, Crosstalk coupling, Graphite, HOPG, Recognition, Feature-oriented scanning, FOS, Counter-scanning, Counter-scanned images, Nanometrology, Surface characterization, Nanotechnology

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