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Proceedings Paper

A nonlinear model an actuator
Author(s): Pablo V. Negrón-Marrero; Eva Campo
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Paper Abstract

We present two models based on the theory of nonlinear elasticity of a photo-actuator consisting of a mixture of a polymer matrix with carbon nanotubes. Both models are generalizations of the one proposed by Ahir and Terentjev1 in which the actuation mechanism is modelled as a contraction of a given carbon nanotube in response to an external stimuli. In the first model, a slight variation is introduced in the projection onto the axis of the pre-strain. This new computation improves the result reported in1 for carbon nanotube photo-contraction when a 10% pre-strain is applied. In our second model we use a nonlinear constitutive equation to describe the mechanical response of the composite. We show that by a suitable selection of the parameters in the model, consistent with the average constitutive parameters (Young modulus) reported in the literature, we can further improve on the average carbon nanotube contraction for a 10% pre-strain threshold.

Paper Details

Date Published: 31 August 2011
PDF: 10 pages
Proc. SPIE 8107, Nano-Opto-Mechanical Systems (NOMS), 81070I (31 August 2011); doi: 10.1117/12.892923
Show Author Affiliations
Pablo V. Negrón-Marrero, Univ. de Puerto Rico en Humacao (United States)
Eva Campo, Univ. of Pennsylvania (United States)

Published in SPIE Proceedings Vol. 8107:
Nano-Opto-Mechanical Systems (NOMS)
Jaume Esteve; Eugene M. Terentjev; Eva M. Campo, Editor(s)

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