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- 저자 : Iman Mehdipour (검색결과 1 건)
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Iman Mehdipour,Ahmad Erfani-Moghadam,Cyrus Mehdipour 한국물리학회 2013 Current Applied Physics Vol.13 No.7
In the present paper, another latent capability of SWCNT as a mass sensor is investigated. The relationship between the resonant frequency, dynamic pull-in voltage at the resonance frequency shift, and the attached mass is established by using the nonlocal EulereBernoulli beam theory. Using this relationship,a general closed-form nonlinear sensor-equation has been derived for the detection of the mass attached to the SWCNT. The aim of this study and present model is to show the sensitivity of the Cantilevered SWCNT to the values and positions of attached mass. Moreover, the results indicate that by increasing the value of attached mass and considering a single non-local scaling parameter (e0), the values of dynamic pull-in voltage at the resonance frequency shift are decreased. Because of the small scaling parameter (e0), the mass sensitivity of carbon nanotube increases, when the position of the attached mass is in the tip of a Cantilevered SWCNT length. The authority and the accuracy of these formulas are examined with other pull-in sensor equations in literatures. The results demonstrate that the new sensor equation can be applied for CNT-based mass sensors with rational accuracy.
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