title: Printed magnetic FePt nanocrystal films.
abstract: Patterned monolayers and multilayers of FePt nanocrystals were printed onto substrates by first assembling nanocrystals on a Langmuir-Blodgett (LB) trough and then lifting them onto prepatterned polydimethylsiloxane (PDMS) stamps, followed by transfer printing onto the substrate. Patterned features, including micrometer-size circles, lines, and squares, could be printed using this approach. The magnetic properties of the printed nanocrystal films were also measured using magnetic force microscopy (MFM). Room-temperature MFM could detect a remanent (permanent) magnetization from multilayer (>3 nanocrystals thick) films of chemically ordered L1(0) FePt nanocrystals.
authors.affiliation: Department of Chemical Engineering, Center for Nano- and Molecular Science and Technology, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA.
authors.forename: Reken N
authors.initials: RN
authors.lastname: Patel
authors.forename: Andrew T
authors.initials: AT
authors.lastname: Heitsch
authors.forename: Changbae
authors.initials: C
authors.lastname: Hyun
authors.forename: Detlef-M
authors.initials: DM
authors.lastname: Smilgies
authors.forename: Alex
authors.initials: A
authors.lastname: de Lozanne
authors.forename: Yueh-Lin
authors.initials: YL
authors.lastname: Loo
authors.forename: Brian A
authors.initials: BA
authors.lastname: Korgel