Published July 7, 2008 | Published
Journal Article Open

Artifact-free dynamic atomic force microscopy reveals monotonic dissipation for a simple confined liquid

Abstract

We present definitive interaction measurements of a simple confined liquid (octamethylcyclotetrasiloxane) using artifact-free frequency modulation atomic force microscopy. We use existing theory to decouple the conservative and dissipative components of the interaction, for a known phase offset from resonance (90° phase shift), that has been deliberately introduced into the experiment. Further we show the qualitative influence on the conservative and dissipative components of the interaction of a phase error deliberately introduced into the measurement, highlighting that artifacts, such as oscillatory dissipation, can be readily observed when the phase error is not compensated for in the force analysis.

Copyright and License

© 2008 American Institute of Physics.

Copyright and License

This work was supported by the Irish Research Council for Science, Engineering and Technology (Grant. No. PD-2005-26) and Science Foundation Ireland (Grant No. 07/IN1/B931).

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October 4, 2023
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