title: 3D Printing of Transparent and Conductive Heterogeneous Hydrogel-Elastomer Systems.
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.
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
authors.forename: Kevin
authors.initials: K
authors.lastname: Tian
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
authors.forename: Jinhye
authors.initials: J
authors.lastname: Bae
authors.affiliation: School of Mechanical Materials and Mechatronic Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia.|Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, University of Wollongong, Wollongong, NSW, 2522, Australia.
authors.forename: Shannon E
authors.initials: SE
authors.lastname: Bakarich
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.|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.
authors.forename: Canhui
authors.initials: C
authors.lastname: Yang
authors.affiliation: Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, University of Wollongong, Wollongong, NSW, 2522, Australia.|Soft Materials Group, School of Chemistry, University of Wollongong, Wollongong, NSW, 2522, Australia.
authors.forename: Reece D
authors.initials: RD
authors.lastname: Gately
authors.affiliation: School of Mechanical Materials and Mechatronic Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia.|Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, University of Wollongong, Wollongong, NSW, 2522, Australia.
authors.forename: Geoffrey M
authors.initials: GM
authors.lastname: Spinks
authors.affiliation: Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, University of Wollongong, Wollongong, NSW, 2522, Australia.|Soft Materials Group, School of Chemistry, University of Wollongong, Wollongong, NSW, 2522, Australia.
authors.forename: Marc
authors.initials: M
authors.lastname: In Het Panhuis
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.|Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, MA, 02138, United States.
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Suo
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
authors.forename: Joost J
authors.initials: JJ
authors.lastname: Vlassak
keywords: 3D printing; elastomers; hydrogels; ionic conductors; stretchable electronics