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Investigation of electrochemical actuation by polyaniline nanofibers

Mehraeen, Shayan and Alkan Gürsel, Selmiye and Papila, Melih and Cebeci, Fevzi Çakmak (2017) Investigation of electrochemical actuation by polyaniline nanofibers. Smart Materials and Structures, 26 (9). ISSN 0964-1726 (Print) 1361-665X (Online)

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Official URL: http://dx.doi.org/10.1088/1361-665X/aa7718

Abstract

Polyaniline nanofibers have shown promising electrical and electrochemical properties which make them prominent candidates in the development of smart systems employing sensors and actuators. Their electrochemical actuation potential is demonstrated in this study. A trilayer composite actuator based on polyaniline nanofibers was designed and fabricated. Cross-linked polyvinyl alcohol was sandwiched between two polyaniline nanofibrous electrodes as ion-containing electrolyte gel. First, electrochemical behavior of a single electrode was studied, showing reversible redox peak pairs in 1 M HCl using a cyclic voltammetry technique. High aspect ratio polyaniline nanofibers create a porous network which facilitates ion diffusion and thus accelerates redox reactions. Bending displacement of the prepared trilayer actuator was then tested and reported under an AC potential stimulation as low as 0.5 V in a variety of frequencies from 50 to 1000 mHz, both inside 1 M HCl solution and in air. Decay of performance of the composite actuator in air is investigated and it is reported that tip displacement in a solution was stable and repeatable for 1000 s in all selected frequencies.

Item Type:Article
Uncontrolled Keywords:polyaniline nanofiber; actuation stroke; bending actuator; air working actuator; gel electrolyte
Subjects:T Technology > T Technology (General)
Q Science > Q Science (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Q Science > QD Chemistry
ID Code:33613
Deposited By:Selmiye Alkan Gürsel
Deposited On:10 Sep 2017 13:49
Last Modified:10 Sep 2017 13:49

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