Carbon nanotube (CNT);
Nonlinear vibration;
Thermal effect;
Finite element method (FEM);
Resonance frequency shift;
Mass sensor;
MECHANICAL RESONATORS;
MOLECULAR-DYNAMICS;
YOUNGS MODULUS;
SINGLE;
SIMULATION;
BEAM;
PREDICTION;
REGIME;
MODEL;
D O I:
10.1016/j.physe.2016.08.019
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
In the present study we carried out a dynamic analysis of a CNT-based mass sensor by using a finite element method (FEM)-based nonlinear analysis model of the CNT resonator to elucidate the combined effects of thermal effects and nonlinear oscillation behavior upon the overall mass detection sensitivity. Mass sensors using carbon nanotube (CNT) resonators provide very high sensing performance. Because CNT-based resonators can have high aspect ratios, they can easily exhibit nonlinear oscillation behavior due to large displacements. Also, CNT-based devices may experience high temperatures during their manufacture and operation. These geometrical nonlinearities and temperature changes affect the sensing performance of CNT-based mass sensors. However, it is very hard to find previous literature addressing the detection sensitivity of CNT-based mass sensors including considerations of both these nonlinear behaviors and thermal effects. We modeled the nonlinear equation of motion by using the von Karman nonlinear strain displacement relation, taking into account the additional axial force associated with the thermal effect. The FEM was employed to solve the nonlinear equation of motion because it can effortlessly handle the more complex geometries and boundary conditions. A doubly clamped CNT resonator actuated by distributed electrostatic force was the configuration subjected to the numerical experiments. Thermal effects upon the fundamental resonance behavior and the shift of resonance frequency due to attached mass, i.e., the mass detection sensitivity, were examined in environments of both high and low (or room) temperature. The fundamental resonance frequency increased with decreasing temperature in the high temperature environment, and increased with increasing temperature in the low temperature environment. The magnitude of the shift in resonance frequency caused by an attached mass represents the sensing performance of a mass sensor, i.e., its mass detection sensitivity, and it can be seen that this shift is affected by the temperature change and the amount of electrostatic force. The thermal effects on the mass detection sensitivity are intensified in the linear oscillation regime and increase with increasing CNT length; this intensification can either improve or worsen the detection sensitivity. (C) 2016 Elsevier B.V. All rights reserved.
机构:
Chiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Alamusi
;
Hu, Ning
论文数: 0引用数: 0
h-index: 0
机构:
Chiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Chongqing Univ Sci & Technol, Coll Met & Mat Engn, Chongqing 401331, Peoples R ChinaChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Hu, Ning
;
Jia, Bi
论文数: 0引用数: 0
h-index: 0
机构:
Chongqing Univ Sci & Technol, Coll Met & Mat Engn, Chongqing 401331, Peoples R ChinaChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Jia, Bi
;
Arai, Masahiro
论文数: 0引用数: 0
h-index: 0
机构:
Shinshu Univ, Dept Mech Syst Engn, Nagano 3808553, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Arai, Masahiro
;
Yan, Cheng
论文数: 0引用数: 0
h-index: 0
机构:
Queensland Univ Technol, Sch Engn Syst, Brisbane, Qld 4001, AustraliaChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Yan, Cheng
;
Li, Jinhua
论文数: 0引用数: 0
h-index: 0
机构:
Chiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Li, Jinhua
;
Liu, Yaolu
论文数: 0引用数: 0
h-index: 0
机构:
Chiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Liu, Yaolu
;
Atobe, Satoshi
论文数: 0引用数: 0
h-index: 0
机构:
Tohoku Univ, Dept Aerosp Engn, Aoba Ku, Sendai, Miyagi 9808579, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Atobe, Satoshi
;
Fukunaga, Hisao
论文数: 0引用数: 0
h-index: 0
机构:
Tohoku Univ, Dept Aerosp Engn, Aoba Ku, Sendai, Miyagi 9808579, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
机构:
Univ Western Ontario, Fac Engn, Dept Mech & Mat Engn, London, ON N6A 5B9, CanadaUniv Western Ontario, Fac Engn, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada
Arghavan, S.
;
Singh, A. V.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Fac Engn, Dept Mech & Mat Engn, London, ON N6A 5B9, CanadaUniv Western Ontario, Fac Engn, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada
机构:
Chiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Alamusi
;
Hu, Ning
论文数: 0引用数: 0
h-index: 0
机构:
Chiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Chongqing Univ Sci & Technol, Coll Met & Mat Engn, Chongqing 401331, Peoples R ChinaChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Hu, Ning
;
Jia, Bi
论文数: 0引用数: 0
h-index: 0
机构:
Chongqing Univ Sci & Technol, Coll Met & Mat Engn, Chongqing 401331, Peoples R ChinaChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Jia, Bi
;
Arai, Masahiro
论文数: 0引用数: 0
h-index: 0
机构:
Shinshu Univ, Dept Mech Syst Engn, Nagano 3808553, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Arai, Masahiro
;
Yan, Cheng
论文数: 0引用数: 0
h-index: 0
机构:
Queensland Univ Technol, Sch Engn Syst, Brisbane, Qld 4001, AustraliaChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Yan, Cheng
;
Li, Jinhua
论文数: 0引用数: 0
h-index: 0
机构:
Chiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Li, Jinhua
;
Liu, Yaolu
论文数: 0引用数: 0
h-index: 0
机构:
Chiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Liu, Yaolu
;
Atobe, Satoshi
论文数: 0引用数: 0
h-index: 0
机构:
Tohoku Univ, Dept Aerosp Engn, Aoba Ku, Sendai, Miyagi 9808579, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
Atobe, Satoshi
;
Fukunaga, Hisao
论文数: 0引用数: 0
h-index: 0
机构:
Tohoku Univ, Dept Aerosp Engn, Aoba Ku, Sendai, Miyagi 9808579, JapanChiba Univ, Dept Mech Engn, Inage Ku, Chiba 2638522, Japan
机构:
Univ Western Ontario, Fac Engn, Dept Mech & Mat Engn, London, ON N6A 5B9, CanadaUniv Western Ontario, Fac Engn, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada
Arghavan, S.
;
Singh, A. V.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Fac Engn, Dept Mech & Mat Engn, London, ON N6A 5B9, CanadaUniv Western Ontario, Fac Engn, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada