TY - JOUR
T1 - Damping vibration of scanning near-field optical microscope probe using the Timoshenko beam model
AU - Chen, Terry Yuan Fang
AU - Lee, Haw Long
N1 - Funding Information:
The authors wish to thank the National Science Council of the Republic of China in Taiwan for providing financial support for this study under Project NSC 95-2221-E-006-037-MY2.
PY - 2009/1
Y1 - 2009/1
N2 - 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 theory, including the effects of shear deformation and rotary inertia, has been analyzed. In the analysis, 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. Besides, 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. The trend is more obvious, especially dimensionless damping factor ηf>0.4.
AB - 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 theory, including the effects of shear deformation and rotary inertia, has been analyzed. In the analysis, 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. Besides, 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. The trend is more obvious, especially dimensionless damping factor ηf>0.4.
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U2 - 10.1016/j.mejo.2008.06.100
DO - 10.1016/j.mejo.2008.06.100
M3 - Article
AN - SCOPUS:57849157778
SN - 0026-2692
VL - 40
SP - 53
EP - 57
JO - Microelectronics Journal
JF - Microelectronics Journal
IS - 1
ER -