Low voltage linear actuators based on carbide-derived carbon powder

Janno Torop; Mati Arulepp; Jaan Leis; Andres Punning; Urmas Johanson; Alvo Aabloo

doi:10.1117/12.815643

6 April 2009 Low voltage linear actuators based on carbide-derived carbon powder

Janno Torop, Mati Arulepp, Jaan Leis, Andres Punning, Urmas Johanson, Alvo Aabloo

Proceedings Volume 7287, Electroactive Polymer Actuators and Devices (EAPAD) 2009; 72870S (2009) https://doi.org/10.1117/12.815643
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

Novel linear electromechanical actuators based on nanoporous TiC-derived carbons were prepared and studied. Traditionally, thin membranes containing mobile ions are used for bending actuators. We describe a linear actuator which consists of carbon material thin film and an ionic liquid. The thin film is made from nanoporous TiC-derived carbon powder and polytetrafluoroethylene (PTFE) as a binder agent. The working mechanism of the actuators is based on the interactions between the high-surface-area carbide-derived carbon (CDC) and the ions of the electrolyte. These actuators are able to generate linear actuation of about 1% from their thickness under voltages less than 3 V. The motion starts already at 0.8V and the magnitude of actuation depends on the electrical charge stored by the device. Two different types of electrolyte were used: 1) Ionic liquid (EMITf) and 2) Tetra-alcyl-ammonium salt in propylene carbonate (PC) solution. The actuators with ionic liquid have 60% higher movement. The electromechanical parameters of the actuators were studied by using cyclic voltammetry and electrochemical impedance spectroscopy methods.

Citation Download Citation

Janno Torop, Mati Arulepp, Jaan Leis, Andres Punning, Urmas Johanson, and Alvo Aabloo "Low voltage linear actuators based on carbide-derived carbon powder", Proc. SPIE 7287, Electroactive Polymer Actuators and Devices (EAPAD) 2009, 72870S (6 April 2009); https://doi.org/10.1117/12.815643

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