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Proceedings Paper

Linear and bending actuation of bucky gel
Author(s): Maurizio Biso; Alberto Ansaldo; Veronica Vintera; Davide Ricci
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Paper Abstract

In 2003 Takuzo Aida and coworkers reported that single-walled carbon nanotubes (SW-CNTs), when ground with imidazolium based ionic liquids (ILs), create a physical gel, named "bucky gel"1. This gel was used to prepare bimorph electrochemical actuators using a polymer-supported internal IL electrolyte layer2. These actuators can operate in air at low voltage showing improved frequency response and strain. Usual bucky gel actuators rely on a bimorph configuration where the electrodes are used alternatively as cathode and anode thus producing a bending motion. This kind of motion is limiting the possible applications, especially when, like in artificial muscles, linear strain and motion are required. We present a new design for bucky gel actuators capable of both linear and bending motion that uses a three electrode configuration with two active electrodes and a third passive one, made from a metal spring (serpentine shaped), acting as counter plate. We have built such a device and report here its linear and bending actuation performance. In these preliminary experiments we have obtained a linear strain of 0.6% and a bending strain difference between two bucky gel electrodes of 0.25%.

Paper Details

Date Published: 28 March 2011
PDF: 6 pages
Proc. SPIE 7976, Electroactive Polymer Actuators and Devices (EAPAD) 2011, 79762E (28 March 2011); doi: 10.1117/12.878464
Show Author Affiliations
Maurizio Biso, Italian Institute of Technology (Italy)
Alberto Ansaldo, Italian Institute of Technology (Italy)
Veronica Vintera, Univ. di Genova (Italy)
Davide Ricci, Italian Institute of Technology (Italy)

Published in SPIE Proceedings Vol. 7976:
Electroactive Polymer Actuators and Devices (EAPAD) 2011
Yoseph Bar-Cohen; Federico Carpi, Editor(s)

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