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Effect of surface energy on the sensing performance of bridged nanotube-based micro-mass sensors

Wang, K.F. and Wang, B. (2014). Effect of surface energy on the sensing performance of bridged nanotube-based micro-mass sensors. Journal of Intelligent Material Systems and Structures,25(17):2177-2186.

Document type: Journal Article
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IRMA ID 84473306xPUB85
Title Effect of surface energy on the sensing performance of bridged nanotube-based micro-mass sensors
Author Wang, K.F.
Wang, B.
Journal Name Journal of Intelligent Material Systems and Structures
Publication Date 2014
Volume Number 25
Issue Number 17
ISSN 1045-389X   (check CDU catalogue open catalogue search in new window)
Start Page 2177
End Page 2186
Total Pages 10
Place of Publication United Kingdom
Publisher Sage Publications Ltd.
HERDC Category C1 - Journal Article (DIISR)
Abstract The governing equation of a nanotube-based mass sensor is derived with consideration of surface energy, transverse shear deformation, and rotary inertia. Dependencies of the frequency shift and the sensitivity of the sensor on the attached mass are obtained in closed form. The results show that the traditional model, which neglects the surface energy, predicts a higher attached mass and lower sensitivity of the sensor. On the other hand, neglecting the transverse shear deformation and rotary inertia of the sensor will result in a lower prediction of attached mass and a higher prediction of sensitivity of the sensor. It is also found that the surface energy has no effect on the mode shape of the sensor. However, the effect of the location of the attached mass on the mode shape is significant. In particular, if the attached mass is close to the midpoint of the sensor, the frequency shift and sensitivity become very significant.
DOI http://dx.doi.org/10.1177/1045389X13517317   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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