title: Ultrafine Pitch Stencil Printing of Liquid Metal Alloys.
abstract: With high conductivity and stretchable for large cross-sections, liquid metals such as galinstan are promising for creating stretchable devices and interconnects. Creating high resolution features in parallel is challenging, with most techniques limited to a hundred micrometers or more. In this work, multilevel electroplated stencils are investigated for printing liquid metals, with galinstan features as small as ten micrometers printed on soft elastomers, a factor of 10 reduction over past liquid metal stencil printing. Capacitors and resistive strain sensors are also demonstrated, showing the potential for creating stretchable conductors and devices.
authors.affiliation: U.S. Army Research Laboratory , 2800 Powder Mill Road, Adelphi, Maryland 20783, United States.
authors.forename: Nathan
authors.identifier: http://orcid.org/0000-0002-2713-5314
authors.initials: N
authors.lastname: Lazarus
authors.affiliation: U.S. Army Research Laboratory , 2800 Powder Mill Road, Adelphi, Maryland 20783, United States.
authors.forename: Sarah S
authors.initials: SS
authors.lastname: Bedair
authors.affiliation: General Technical Services Inc. at Army Research Laboratory , 2800 Powder Mill Road, Adelphi, Maryland 20783, United States.
authors.forename: Iain M
authors.initials: IM
authors.lastname: Kierzewski
keywords: electroplated stencil; galinstan; liquid metal; stencil printing; stretchable electronics