Modeling of Carbon Nanotube Actuators: Part II — Mechanical Properties,Electro Mechanical Coupling and Validation of the Model

Abstract

Carbon nanotubes have the potential to become one of the actuating materials of the future. Since the discovery of the actuating effect a lot of experimental data was collected to describe the electro-mechanical coupling. With this paper a model for the system behavior is available to enhance the understanding of the effect. An analytical model is introduced in the first part of the article. The electrical parameters of the model are determined by impedance spectroscopy. Furthermore, the mechanical parameters and the electro-mechanical coupling have to be examined. The main subject of the second part of the article is to validate the model and to compare measured and simulated responses to several excitations.

Keywords

carbon nanotube actuator analytical model constant phase angle element.

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References

Barisci, J.N. , Wallace, G.G. , MacFarlane, D.R. and Baughman, R.H. 2004. ``Investigation of Ionic Liquids as Electrolytes for Carbon Nanotube Electrodes,'' Electrochemistry Communications, 6(1):22-27.

Baughman, R.H. , Cui, C. , Zakhidov, A.A. , Iqbal, Z. , Barisci, J.N. , Spinks, G.M. , Wallace, G.G. , Mazzoldi, A. , Rossi, D.D. , Rinzler, A.G. , Jaschinski, O. , Roth, S. and Kerzesz, M. 1999. ``Carbon Nanotube Actuators,'' Science , 284:1340-1344.

Gao, G. , Cagin, T. and Goddard, W.A. 1998. ``Energetics, Structure, Mechanical and Vibrational Properties of Single-Walled Carbon Nanotubes,'' Nanotechnology, 9:184-191.

Ghosh, S. , Gadagkar, V. and Sood, A.K. 2005. ``Strains Induced in Carbon Nanotubes due to the Presence of Ions: Ab Initio Restricted Hatree-Fock Calculations,'' Chemical Physics Letters, 406:10-14.

Monner, H.P. , Mühle, S. , Wierach, P. and Riemenschneider, J. 2003. Carbon Nanotubes - Ein Multifunktionaler Leichtbauwerkstoff für Die Adaptronik, Adaptronic Congress.

Riemenschneider, J. , Mahrholz, T. , Mosch, J. , Monner, H.P. and Melcher, J. 2007. ``System Response of Nanotube Based Actuators,'' Mechanics of Advanced Materials and Structures, 14(1):57-65.

Riemenschneider, J. , Temmen, H. and Monner, H.P. 2006. CNT Based Actuators: Experimental and Theoretical Investigation of the in-Plain Strain Generation, Chemon-Tubes.

Salvetat, J.P. , Briggs, G.A.D. and Bonard, J.M. 1999. ``Elastic and Shear Moduli of Single-Walled Carbon Nanotubes Ropes,'' Physical Review Letters, 82(5):944-947.