Effect of intrinsic instability of cantilevers on static mode Atomic Force Spectroscopy

Details Effect of intrinsic instability of cantilevers on static mode Atomic Force Spectroscopy Effect of intrinsic instability of cantilevers on static mode Atomic Force Spectroscopy

2008-10-18

arxiv.org/abs/0810.3290v1

Physics

Condensed Matter

Materials Science

5 pages, 5 figures

Scientific paper

We show that the static force spectroscopy curve is significantly modified due to presence of intrinsic cantilever instability. This instability acts in tandem with such instabilities like water bridge or molecular bond rupture and makes the static force spectroscopy curve (including "jump-off-contact") dependent on the step-size of the movement of sample stage. A model has been proposed to explain the data. This has been further validated by applying an electric field between tip and substrate which modifies the tip-substrate interaction.

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