Abstract
Carbon nanotube (CNT) has recently received much attention due to its excellent electromechanical properties, indicating that CNT can be employed for development of Nanoelectromechanical system (NEMS) such as nanomechanical resonators. For effective design of CNT-based resonators, it is required to accurately predict the vibration behavior of CNT resonators as well as their frequency response to mass adsorption. In this work, we have studied the vibrational behavior of Multi-walled CNT (MWCNT) resonators by using a continuum mechanics modeling that was implemented in Finite element method (FEM). In particular, we consider a transversely isotropic hollow cylinder solid model with Finite element (FE) implementation for modeling the vibration behavior of Multi-walled CNT (MWCNT) resonators. It is shown that our continuum mechanics model provides the resonant frequencies of various MWCNTs being comparable to those obtained from experiments. Moreover, we have investigated the frequency response of MWCNT resonators to mass adsorption by using our continuum model with FE implementation. Our study sheds light on our continuum mechanics model that is useful in predicting not only the vibration behavior of MWCNT resonators but also their sensing performance for further effective design of MWCNT-based NEMS devices.
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Recommended by Associate Editor Heung Soo Kim
Chang-Wan Kim received a Ph.D. in NVH analysis by newly developing Automated Multilevel Substructuring (AMLS) method from the University of Texas at Austin. AMLS is now being used in all automobile industries for NVH analysis. He previously worked in NASTRAN developer in USA and RecurDyn in Korea. He has over 90 SCI(E) paper publications along with several invited papers and presentations. Now, his research is specialized in multiphysics analysis by integrating CFD-MBD-FEM technology and its optimization.
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Choi, M., Eom, K., Gwak, K. et al. Dynamical response of multi-walled carbon nanotube resonators based on continuum mechanics modeling for mass sensing applications. J Mech Sci Technol 31, 2385–2391 (2017). https://doi.org/10.1007/s12206-017-0435-3
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DOI: https://doi.org/10.1007/s12206-017-0435-3