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Figure 3 | EPJ Techniques and Instrumentation

Figure 3

From: Influence of squeeze-film damping on higher-mode microcantilever vibrations in liquid

Figure 3

Phase model and data. Lower plot: Phase data recorded at three different cantilever-surface gap heights (only every twentieth marker is shown), the model ϕ (solid black line) and the baseline ϕ bl (dashed black line) included in the model to account for the phase response of the photothermal excitation ϕ th and the measurement electronics ϕ el . Upper plot: The difference between the model and the experimental data, Δ; to extract the eigenfrequencies and quality factors from the data, Δ was minimized using a Levenberg-Marquardt algorithm.

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