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On the Origin of Extended Resolution in Kelvin Probe Force Microscopy with a Worn Tip Apex
Published online by Cambridge University Press: 05 April 2018
Abstract
In this work we analyzed the effect of the atomic force microscopy probe tip apex shape on Kelvin Probe Force Microscopy (KPFM) potential sensitivity and spatial resolution. It was found that modification of the apex shape from spherical to planar upon thinning of the conductive coating leads to enhanced apex contribution to the total electrostatic force between the probe and the sample. The effect results in extended potential sensitivity and spatial resolution of KPFM. Experimental results were supported by calculations.
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- © Microscopy Society of America 2018
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