Photothermal excitation of microcantilevers in liquids

  title={Photothermal excitation of microcantilevers in liquids},
  author={Daniel Ramos and Javier Tamayo and Johann Mertens and Montserrat Calleja},
  journal={Journal of Applied Physics},
We report the selective excitation of the flexural modes of microcantilevers in aqueous solutions, by applying the photothermal excitation technique. The experiments show that a particular vibration mode can be efficiently excited by focusing the intensity-modulated laser beam on regions of high curvature of the vibration shape. In addition, the resulting resonant peaks in liquid appear distorted by an amplitude component that decreases with the frequency. This distortion produces a shift of… 

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