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  • 1.
    Carpi, Federico
    et al.
    Queen Mary University of London, England.
    Graz, Ingrid
    Johannes Kepler University of Linz, Austria.
    Jager, Edwin
    Linköping University, Department of Physics, Chemistry and Biology, Biosensors and Bioelectronics. Linköping University, The Institute of Technology.
    Ladegaard Skov, Anne
    Technical University of Denmark, Denmark.
    Vidal, Frederic
    University of Cergy Pontoise, France.
    Editorial Material: Electromechanically active polymer transducers: research in Europe2013In: Smart materials and structures (Print), ISSN 0964-1726, E-ISSN 1361-665X, Vol. 22, no 10Article in journal (Other academic)
    Abstract [en]

    n/a

  • 2.
    Jager, Edwin
    et al.
    Linköping University, Department of Physics, Chemistry and Biology, Sensor and Actuator Systems. Linköping University, Faculty of Science & Engineering.
    Ladegaard-Skov, Anne
    Technical University of Denmark (DTU), Denmark.
    Otero, Toribio
    Technical University of Cartagena, Spain.
    Jean-Mistral, Claire
    National Institute of Applied Science—INSA de Lyon, France,.
    Progress in electromechanically active polymers: selected papers from EuroEAP 20172018In: Smart materials and structures (Print), ISSN 0964-1726, E-ISSN 1361-665X, Vol. 27, no 7, article id 070201Article in journal (Other academic)
    Abstract [en]

    n/a

  • 3.
    Martinez, Jose Gabriel
    et al.
    Linköping University, Department of Physics, Chemistry and Biology, Sensor and Actuator Systems. Linköping University, Faculty of Science & Engineering.
    Richter, Klaus
    ITP GmbH Gesellschaft für Intelligente Produkte (ITP), Weimar, Germany.
    Persson, Nils-Krister
    Smart Textiles, Swedish School of Textiles (THS) , University of Borås, Borås, Sweden.
    Jager, Edwin
    Linköping University, Department of Physics, Chemistry and Biology, Sensor and Actuator Systems. Linköping University, Faculty of Science & Engineering.
    Investigation of electrically conducting yarns for use in textile actuators2018In: Smart materials and structures (Print), ISSN 0964-1726, E-ISSN 1361-665X, Vol. 27, no 7, article id 074004Article in journal (Refereed)
    Abstract [en]

    Textile actuators are an emerging technology to develop biomimetic actuators with synergetic actuation. They are composed of a passive fabric coated with an electroactive polymer providing with mechanical motion. Here we used different conducting yarns (polyamide + carbon, silicon + carbon, polyamide + silver coated, cellulose + carbon, polyester + 2 x INOX 50µm, polyester + 2 x Cu/Sn and polyester + gold coated) to develop such textile actuators. It was possible to coat them through direct electrochemical methods, which should provide with an easier and more cost-effective fabrication process. The conductivity and the electrochemical properties of the yarns were sufficient to allow the electropolymerization of the conducting polymer polypyrrole on the yarns. The electropolymerization was carried out and both the linear and angular the actuation of the yarns was investigated. These yarns may be incorporated into textile actuators for assistive prosthetic devices easier and cheaper to get and at the same time with good mechanical performance are envisaged.

  • 4.
    Melling, Daniel
    et al.
    Cranfield University, England.
    Wilson, Stephen
    University of Dundee, Scotland.
    Jager, Edwin
    Linköping University, Department of Physics, Chemistry and Biology, Biosensors and Bioelectronics. Linköping University, The Institute of Technology.
    The effect of film thickness on polypyrrole actuation assessed using novel non-contact strain measurements2013In: Smart materials and structures (Print), ISSN 0964-1726, E-ISSN 1361-665X, Vol. 22, no 10Article in journal (Refereed)
    Abstract [en]

    Micro-actuators have been developed that exploit the electrochemically induced volume change of the electro-active polymer polypyrrole. The strain regime is inherently complex at a physical level and whilst volume change can be estimated indirectly using, for instance, bending beam theory, such methods become unreliable for large deflections owing to limitations in the mathematical model. A new non-contact measuring technique based on laser micrometry is presented to characterize the time-dependent expansion of electro-active films such as polypyrrole. Measurements have been made which demonstrate that the observed strain is dependent on film thickness. The new measurement technique is straightforward to perform and it is anticipated that it can be used for future materials development and performance assessment, including long-term stability evaluations and operational failure studies of the films.

  • 5.
    Tehrani, Payman
    et al.
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Robinson, Nathaniel D.
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Kugler, Thomas
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Remonen, Tommi
    Acreo AB, Bredgatan 34, SE-602 21 Norrköping, Sweden.
    Hennerdal, Lars-Olov
    Acreo AB, Bredgatan 34, SE-602 21 Norrköping, Sweden.
    Häll, Jessica
    Acreo AB, Bredgatan 34, SE-602 21 Norrköping, Sweden.
    Malmström, Anna
    Acreo AB, Bredgatan 34, SE-602 21 Norrköping, Sweden.
    Leenders, Luc
    AGFA-Gevaert NV, Septestraat 27, B-2640 Mortsel, Belgium.
    Berggren, Magnus
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Patterning polythiophene films using electrochemical over-oxidation2005In: Smart materials and structures (Print), ISSN 0964-1726, E-ISSN 1361-665X, Vol. 14, p. N21-N25Article in journal (Refereed)
    Abstract [en]

    Over-oxidative degradation of polythiophenes, which breaks the conjugation and destroys the electronic conductivity of the polymer, is well documented as a liability in these materials. We use this 'weakness', via controlled electrochemical over-oxidation, in a novel subtractive patterning technique compatible with high-speed reel-to-reel printing technology. We demonstrate the use of electrochemical over-oxidation to pattern PEDOT:PSS films via an x–y plotter, silk-screen and high-resolution photolithographic techniques, resulting in patterning down to a resolution of 2 µm and a conduction contrast between unpatterned and patterned areas of up to 108.

  • 6.
    Zhong, Yong
    et al.
    Linköping University, Department of Physics, Chemistry and Biology, Sensor and Actuator Systems. Linköping University, Faculty of Science & Engineering.
    Lundemo, Staffan
    Linköping University, Department of Physics, Chemistry and Biology, Sensor and Actuator Systems. Linköping University, Faculty of Science & Engineering.
    Jager, Edwin
    Linköping University, Department of Physics, Chemistry and Biology, Sensor and Actuator Systems. Linköping University, Faculty of Science & Engineering.
    Development of polypyrrole based solid state on-chip microactuators using photolithography2018In: Smart materials and structures (Print), ISSN 0964-1726, E-ISSN 1361-665X, Vol. 27, no 7, article id 074006Article in journal (Refereed)
    Abstract [en]

    There is a need for soft microactuators, especially for biomedical applications. We have developed a microfabrication process to create such soft, on-chip polymer-based microactuators that can operate in air. The on-chip microactuators were fabricated using standard photolithographic techniques and wet etching, combined with special designed process to micropattern the electroactive polymer polypyrrole that drives the microactuators. By immobilizing a UV-patternable gel containing a liquid electrolyte on top of the electroactive polypyrrole layer, actuation in air was achieved although with reduced movement. Further optimization of the processing is currently on-going. The result shows the possibility to batch fabricate complex microsystems such as microrobotics and micromanipulators based on these solid state on-chip microactuators using microfabrication methods including standard photolithographic processes.

1 - 6 of 6
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