title: Selective and directional actuation of elastomer films using chained magnetic nanoparticles.
abstract: We report selective and directional actuation of elastomer films utilizing magnetic anisotropy introduced by chains of Fe3O4 magnetic nanoparticles (MNPs). Under uniform magnetic fields or field gradients, dipolar interactions between the MNPs favor magnetization along the chain direction and cause selective lifting. This mechanism is described using a simple model.
authors.affiliation: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA. jbtracy@ncsu.edu.
authors.forename: Sumeet R
authors.initials: SR
authors.lastname: Mishra
authors.affiliation: Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
authors.forename: Michael D
authors.initials: MD
authors.lastname: Dickey
authors.affiliation: Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
authors.forename: Orlin D
authors.initials: OD
authors.lastname: Velev
authors.affiliation: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA. jbtracy@ncsu.edu.
authors.forename: Joseph B
authors.initials: JB
authors.lastname: Tracy