title: Magnetic elastomers for stretchable inductors.
abstract: In this work, silicone loaded with magnetic particles is investigated for creating a composite with higher permeability while still maintaining stretchability. Magnetic and mechanical properties are first characterized for composites based on both spherical and platelet particle geometries. The first magnetic-core stretchable inductors are then demonstrated using the resulting ferroelastomer. Solenoid inductors based on liquid metal galinstan are then demonstrated around a ferroelastomeric core and shown to survive uniaxial strains up to 100%. Soft elastomers loaded with magnetic particles were found to increase the core permeability and inductance density of stretchable inductors by nearly 200%.
authors.affiliation: †U.S. Army Research Laboratory, 2800 Powder Mill Road, Adelphi, Maryland 20783, United States.
authors.forename: Nathan
authors.initials: N
authors.lastname: Lazarus
authors.affiliation: †U.S. Army Research Laboratory, 2800 Powder Mill Road, Adelphi, Maryland 20783, United States.
authors.forename: Chris D
authors.initials: CD
authors.lastname: Meyer
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: †U.S. Army Research Laboratory, 2800 Powder Mill Road, Adelphi, Maryland 20783, United States.
authors.forename: Geoffrey A
authors.initials: GA
authors.lastname: Slipher
authors.affiliation: ‡General Technical Services, 2800 Powder Mill Road, Adelphi, Maryland 20783, United States.
authors.forename: Iain M
authors.initials: IM
authors.lastname: Kierzewski
keywords: composite materials; inductors; magnetic materials; stretchable electronics