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4D sequential actuation: Combining ionoprinting and redox chemistry in hydrogels

Research output: Contribution to journalLetter

Original languageEnglish
Article number10LT02
Number of pages9
JournalSmart Materials and Structures
Volume25
Issue number10
Early online date16 Sep 2016
DOIs
DateAccepted/In press - 19 Aug 2016
DateE-pub ahead of print - 16 Sep 2016
DatePublished (current) - Oct 2016

Abstract

The programmable sequential actuation of two-dimensional hydrogel membranes into three-dimensional folded architectures has been achieved by combining ionoprinting and redox chemistry; this methodology permits the programmed evolution of complex architectures triggered through localized out-of-plane deformations. In our study we describe a soft actuator which utilizes ionoprinting of iron and vanadium, with the selective reduction of iron through a mild reducing agent, to achieve chemically controlled sequential folding. Through the optimization of solvent polarity and ionoprinting variables (voltage, duration and anode composition), we have shown how the actuation pathways, rate-of-movement and magnitude of angular rotation can be controlled for the design of a 4D sequential actuator.

    Research areas

  • Hydrogels, Ionoprinting, Actuators, Sequential Actuation, Selective Redox

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    Rights statement: This is the final published version of the article (version of record). It first appeared online via IOP Publishing at http://dx.doi.org/10.1088/0964-1726/25/10/10LT02. Please refer to any applicable terms of use of the publisher.

    Final published version, 1 MB, PDF-document

    Licence: CC BY

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