title: Diamond family of nanoparticle superlattices.
abstract: Diamond lattices formed by atomic or colloidal elements exhibit remarkable functional properties. However, building such structures via self-assembly has proven to be challenging because of the low packing fraction, sensitivity to bond orientation, and local heterogeneity. We report a strategy for creating a diamond superlattice of nano-objects via self-assembly and demonstrate its experimental realization by assembling two variant diamond lattices, one with and one without atomic analogs. Our approach relies on the association between anisotropic particles with well-defined tetravalent binding topology and isotropic particles. The constrained packing of triangular binding footprints of truncated tetrahedra on a sphere defines a unique three-dimensional lattice. Hence, the diamond self-assembly problem is solved via its mapping onto two-dimensional triangular packing on the surface of isotropic spherical particles.
authors.affiliation: Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Wenyan
authors.initials: W
authors.lastname: Liu
authors.affiliation: Department of Materials Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
authors.forename: Miho
authors.initials: M
authors.lastname: Tagawa
authors.affiliation: Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Huolin L
authors.initials: HL
authors.lastname: Xin
authors.affiliation: Biology Department, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Tong
authors.initials: T
authors.lastname: Wang
authors.affiliation: Department of Physics, Wesleyan University, Middletown, CT 06459, USA.
authors.forename: Hamed
authors.initials: H
authors.lastname: Emamy
authors.affiliation: Biology Department, Brookhaven National Laboratory, Upton, NY 11973, USA. Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY 11794, USA.
authors.forename: Huilin
authors.initials: H
authors.lastname: Li
authors.affiliation: Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Kevin G
authors.initials: KG
authors.lastname: Yager
authors.affiliation: Department of Physics, Wesleyan University, Middletown, CT 06459, USA.
authors.forename: Francis W
authors.initials: FW
authors.lastname: Starr
authors.affiliation: Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Alexei V
authors.initials: AV
authors.lastname: Tkachenko
authors.affiliation: Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA. ogang@bnl.gov.
authors.forename: Oleg
authors.initials: O
authors.lastname: Gang