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Adv Mater. 2017 Mar;29(10). doi: 10.1002/adma.201604827. Epub 2017 Jan 11.

3D Printing of Transparent and Conductive Heterogeneous Hydrogel-Elastomer Systems.

Author information

1
School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
2
School of Mechanical Materials and Mechatronic Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia.
3
Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, University of Wollongong, Wollongong, NSW, 2522, Australia.
4
State Key Laboratory for Strength and Vibration of Mechanical Structures, International Center for Applied Mechanics, School of Aerospace, Xi'an Jiaotong University, Xi'an, 710049, China.
5
Soft Materials Group, School of Chemistry, University of Wollongong, Wollongong, NSW, 2522, Australia.
6
Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, MA, 02138, United States.

Abstract

A hydrogel-dielectric-elastomer system, polyacrylamide and poly(dimethylsiloxane) (PDMS), is adapted for extrusion printing for integrated device fabrication. A lithium-chloride-containing hydrogel printing ink is developed and printed onto treated PDMS with no visible signs of delamination and geometrically scaling resistance under moderate uniaxial tension and fatigue. A variety of designs are demonstrated, including a resistive strain gauge and an ionic cable.

KEYWORDS:

3D printing; elastomers; hydrogels; ionic conductors; stretchable electronics

PMID:
28075033
DOI:
10.1002/adma.201604827

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