Microengineered hollow graphene tube systems generate conductive hydrogels with extremely low filler concentration
The fabrication of electrically conductive hydrogels is challenging as the introduction of an electrically conductive filler often changes mechanical hydrogel matrix properties. Here, we present an approach for the preparation of hydrogel composites with outstanding electrical conductivity at extrem...
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| Hauptverfasser: | , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) Editorial |
| Sprache: | Englisch |
| Veröffentlicht: |
March 16, 2021
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| In: |
Nano letters
Year: 2021, Jahrgang: 21, Heft: 8, Pages: 3690-3697 |
| ISSN: | 1530-6992 |
| DOI: | 10.1021/acs.nanolett.0c04375 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/acs.nanolett.0c04375 Verlag, lizenzpflichtig, Volltext: https://pubs.acs.org/doi/10.1021/acs.nanolett.0c04375 
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| Verfasserangaben: | Christine Arndt, Margarethe Hauck, Irene Wacker, Berit Zeller-Plumhoff, Florian Rasch, Mohammadreza Taale, Ali Shaygan Nia, Xinliang Feng, Rainer Adelung, Rasmus R. Schröder, Fabian Schütt, and Christine Selhuber-Unkel |
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| 520 | |a The fabrication of electrically conductive hydrogels is challenging as the introduction of an electrically conductive filler often changes mechanical hydrogel matrix properties. Here, we present an approach for the preparation of hydrogel composites with outstanding electrical conductivity at extremely low filler loadings (0.34 S m-1, 0.16 vol %). Exfoliated graphene and polyacrylamide are microengineered to 3D composites such that conductive graphene pathways pervade the hydrogel matrix similar to an artificial nervous system. This makes it possible to combine both the exceptional conductivity of exfoliated graphene and the adaptable mechanical properties of polyacrylamide. The demonstrated approach is highly versatile regarding porosity, filler material, as well as hydrogel system. The important difference to other approaches is that we keep the original properties of the matrix, while ensuring conductivity through graphene-coated microchannels. This novel approach of generating conductive hydrogels is very promising, with particular applications in the fields of bioelectronics and biohybrid robotics. | ||
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