title: A robust and facile approach to assembling mobile and highly-open unfrustrated triangular lattices from ferromagnetic nanorods.
abstract: A simple and widely applicable approach to assemble long-range two-dimensional mobile arrays of functionalized nickel nanorods with tunable and "highly open" lattice structures is presented. The magnetic assembly of uniformly oriented nanorods in triangular lattices was achieved by a phase separation of the surface confined yet mobile vertical nanorods driven by a gradient magnetic field. In contrast to known approaches, the unfrustrated lattices can be further locked in place allowing for the removal of the applied magnetic field and processing without disrupting the initial order with different symmetries precisely assembled and locked in their position on the same substrate. We suggest that the tunable assemblies of magnetic nanorods provide a versatile platform for downstream handling of open lattice arrays for eventual device integration.
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
authors.forename: Maneesh K
authors.initials: MK
authors.lastname: Gupta
authors.forename: Dhaval D
authors.initials: DD
authors.lastname: Kulkarni
authors.forename: Ren
authors.initials: R
authors.lastname: Geryak
authors.forename: Swati
authors.initials: S
authors.lastname: Naik
authors.forename: Vladimir V
authors.initials: VV
authors.lastname: Tsukruk