Effect of interactive damping on vibration sensitivities of a scanning near-field optical microscope probe

Lee, H. L.; Chen, Terry Yuan-Fang

doi:10.1007/s00340-007-2720-9

Cited by 2 publications

(1 citation statement)

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“…Understanding how the interactive damping affects the frequencies when the probe scanned samples is therefore important. Lee and Chen [13] studied the effect of interactive damping on the sensitivity of flexural and axial vibration modes of a SNOM's tape probe by the Bernoulli-Euler beam model. This implies that the effects of transverse shear deformation and rotary inertia are assumed to be negligible.…”

Section: Introductionmentioning

confidence: 99%

Damping vibration studies of scanning near-field optical microscope

Chen

Lee

2008

Fifth International Symposium on Instrumentation Science and Technology

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Scanning near-field optical microscopy (SNOM) is one of the major proximal probe technologies for obtaining high-resolution images beyond the diffraction limit of light and to fabricate nanometer-scale structures. The effect of interactive damping on the flexural vibration frequency for the scanning near-field optical microscope (SNOM) fiber probe based on the Timoshenko beam (including the effects of shear deformation and rotary inertia) theory, has been analyzed. The effects of the transverse contact stiffness, damping factor and the ratio of different probe dimensions on the damping vibration frequency were studied. The results show that increasing the ratio of probe length to radius increases the damping vibration frequency of mode 1. The damping vibration frequencies, based on the Bernoulli-Euler beam theory and the Timoshenko beam theory, are compared. When the contact stiffness is very large for the higher modes, the effects of shear deformation and rotary inertia on the frequency becomes significant. Furthermore, increasing the damping factor increases the vibration frequency, especially for dimensionless damping factor 0.4 f η > .

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Section: Introductionmentioning

confidence: 99%