A study of the dielectrophoresis force of elastomeric materials for artificial muscle applications

Ruksapong Kunanuruksapong; Anuvat Sirivat

doi:10.1117/12.814845

6 April 2009 A study of the dielectrophoresis force of elastomeric materials for artificial muscle applications

Ruksapong Kunanuruksapong, Anuvat Sirivat

Proceedings Volume 7287, Electroactive Polymer Actuators and Devices (EAPAD) 2009; 72871X (2009) https://doi.org/10.1117/12.814845
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

The effects of dielectric constant and electric field strength on the deflection angle and the dielectrophoresis force of acrylic elastomers and styrene copolymers were investigated. The dielectrophoresis forces of six elastomers were determined in a vertical cantilever fixture by measuring the deflection distance under various electric field strengths. The forces were calculated from the non-linear deflection theory of the cantilever. As an electric field is applied, five elastomers, with the exception of SAR, deflect towards the anode side of the electrodes. For these elastomers, internal dipole moments are generated under electric field leading to the attractive force between the elastomers and the anode. SAR contains metal impurities (Cu and Zn) determined by EDX. Their presence introduces a repulsive force between the Cu²⁺ and Zn²⁺ ions and the aniodic electrode, leading to the bending towards the neutral electrode. The dielectrophoresis forces of the six elastomers generally increase with increasing electric field strength, and increase monotonically with the dielectric constants. AR71 (ε' = 6.33) has the lowest electrical yield point (75 V/mm) but it generates the highest force. On the other hand, SIS (ε' = 2.74) has the highest electrical yield point (400 V/mm) and it generates the lowest force.

Citation Download Citation

Ruksapong Kunanuruksapong and Anuvat Sirivat "A study of the dielectrophoresis force of elastomeric materials for artificial muscle applications", Proc. SPIE 7287, Electroactive Polymer Actuators and Devices (EAPAD) 2009, 72871X (6 April 2009); https://doi.org/10.1117/12.814845

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KEYWORDS

Dielectrics

Dielectrophoresis

Electrodes

Synthetic aperture radar

Copper

Polymers

Zinc

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