Substrate directed self-assembly of anisotropic nanoparticles

被引:8
作者
Patra, Tarak K. [1 ]
Katiyar, Parul [1 ]
Singh, Jayant K. [1 ]
机构
[1] Indian Inst Technol, Dept Chem Engn, Kanpur 208016, Uttar Pradesh, India
关键词
Anisotropic nanoparticle; Self-assembly; Disorder-order transition; Aggregation; Coarse-grained simulation; BUILDING-BLOCKS; GOLD; NANOCRYSTALS; CRYSTALLINE; ORIENTATION; FORCES; SHAPE; GROWTH; ARRAYS;
D O I
10.1016/j.ces.2014.09.023
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
We present a molecular dynamics study on the self assembly of anisotropic nanoparticles triangles and tetrahedrons on a flat surface. We observe ordered and disordered aggregates of nanoparticles depending on the particle particle and surface particle interactions. Anisotropic particles induce directionality in the assembly process. In particular, a cross over from the isotropic (spherical) assembly to the anisotropic (nun spherical) assembly of nanoparticles is identified as their size increases for weak nanoparticle-surface interactions. However, at strong nanoparticle-surface interactions, clusters of nanoparticles grow uniformly on the surface. We present phase diagrams that depict all possible structures of triangles and tetrahedrons depending on their size (L) and the nanoparticle-surface interaction strength (epsilon(ns)). We show a disorder to order transition in the L-epsilon(ns) plane, as L and epsilon(ns) increase. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:16 / 22
页数:7
相关论文
共 46 条
  • [1] Shape-controlled synthesis of colloidal platinum nanoparticles
    Ahmadi, TS
    Wang, ZL
    Green, TC
    Henglein, A
    ElSayed, MA
    [J]. SCIENCE, 1996, 272 (5270) : 1924 - 1926
  • [2] Self-Assembly of Octapod-Shaped Colloidal Nanocrystals into a Hexagonal Ballerina Network Embedded in a Thin Polymer Film
    Arciniegas, Milena P.
    Kim, Mee R.
    De Graaf, Joost
    Brescia, Rosaria
    Marras, Sergio
    Miszta, Karol
    Dijkstra, Marjolein
    van Roij, Rene
    Manna, Liberato
    [J]. NANO LETTERS, 2014, 14 (02) : 1056 - 1063
  • [3] Stability and dynamics of virus capsids described by coarse-grained modeling
    Arkhipov, Anton
    Freddolino, Peter L.
    Schulten, Klaus
    [J]. STRUCTURE, 2006, 14 (12) : 1767 - 1777
  • [4] Maximum and minimum stable random packings of Platonic solids
    Baker, Jessica
    Kudrolli, Arshad
    [J]. PHYSICAL REVIEW E, 2010, 82 (06):
  • [5] Nanoscale Forces and Their Uses in Self-Assembly
    Bishop, Kyle J. M.
    Wilmer, Christopher E.
    Soh, Siowling
    Grzybowski, Bartosz A.
    [J]. SMALL, 2009, 5 (14) : 1600 - 1630
  • [6] Measuring the SERS enhancement factors of dimers with different structures constructed from silver nanocubes
    Camargo, Pedro H. C.
    Au, Leslie
    Rycenga, Matthew
    Li, Weiyang
    Xia, Younan
    [J]. CHEMICAL PHYSICS LETTERS, 2010, 484 (4-6) : 304 - 308
  • [7] Efficient Spin Injector Scheme Based on Heusler Materials
    Chadov, Stanislav
    Graf, Tanja
    Chadova, Kristina
    Dai, Xuefang
    Casper, Frederick
    Fecher, Gerhard H.
    Felser, Claudia
    [J]. PHYSICAL REVIEW LETTERS, 2011, 107 (04)
  • [8] Localized surface plasmon resonance spectroscopy of triangular aluminum nanoparticles
    Chan, George H.
    Zhao, Jing
    Schatz, George C.
    Van Duyne, Richard P.
    [J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (36) : 13958 - 13963
  • [9] Predictive Self-Assembly of Polyhedra into Complex Structures
    Damasceno, Pablo F.
    Engel, Michael
    Glotzer, Sharon C.
    [J]. SCIENCE, 2012, 337 (6093) : 453 - 457
  • [10] Shape and Orientation Matter for the Cellular Uptake of Nonspherical Particles
    Dasgupta, Sabyasachi
    Auth, Thorsten
    Gompper, Gerhard
    [J]. NANO LETTERS, 2014, 14 (02) : 687 - 693