Study on ringing artefacts of carbon nanotube probes of atomic force microscopy
by Xiaodong Xing; Zongwei Xu; Haifeng Gao; Fengzhou Fang; Bing Liu
International Journal of Nanomanufacturing (IJNM), Vol. 10, No. 3, 2014

Abstract: CNTs have been regarded as ideal AFM tips for their outstanding advantages, but due to their high aspect ratio, ringing artefacts often occur when they detect steep samples. Experimental results paired with a mathematical model are used to capture the true sample morphology when such ring artefacts are observed. The scan direction was found to have a prominent influence on the artefacts' consistency and cycle, and the distance of the gaps between the lowest points of the artefacts and the trench obeys a certain rule. By establishing mathematical model, formulae were given to calculate the gaps. Finally, the theoretic morphology can be acquired, and it is in good agreement with the no-artefact images.

Online publication date: Sat, 17-May-2014

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