alexa Thermal and ambient‐induced deflections of scanning force microscope cantilevers
Oncology

Oncology

Advances in Cancer Prevention

Author(s): T Thundat

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The deflection of scanning force microscope cantilevers, metalcoated on one side, is significantly influenced by both thermal heating and variations in relative humidity. For constant relative humidity, the deflection of the cantilever drifts due to laser heating and eventually reaches a steady‐state value. For a thermally stabilized cantilever, the deflection varies linearly with relative humidity. Exposure to other vapors, such as mercury, changes the inherent deflection of the cantilever. Relative amounts of adsorbates on the cantilever can be estimated from shifts in the cantilever resonance frequency with picogram mass resolution. The cantilever deflection as well as changes in resonance frequency due to vapor adsorption can be used as basis for novel chemical sensors.

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This article was published in American Institute of Physics and referenced in Advances in Cancer Prevention

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