Self-assembly of functionally gradient nanoparticle structures
نویسندگان
چکیده
Morphology control of binary nanoparticles in an electric field was investigated by a computational model. The study revealed rich patterning dynamics and how collective actions of relative permittivity, volume fraction, and particle size can lead to a wide range of superlattice structures from functionally gradient columns to chain networks. These results suggest a significant degree of experimental control to assemble binary nanoparticles into new materials. © 2008 American Institute of Physics. DOI: 10.1063/1.3049351
منابع مشابه
Engineering Nano-aggregates: β-Cyclodextrin Facilitates the Thiol-Gold Nanoparticle Self-Assembly
The structure and morphology of nonmaterial formed by colloidal synthesis represent a subject of interest as it is a factor deciding the physicochemical properties and biological applications of nanostructures. Among various nanoparticles, gold can develop fractal assembled patterns. Herein, we report a nano-aggregate of a thiol-on-gold self-assembled structure and the influence of β-cyclodextr...
متن کاملSize-Selective Nanoparticle Assembly on Substrates by DNA Density Patterning.
The vision of nanoscale self-assembly research is the programmable synthesis of macroscale structures with controlled long and short-range order that exhibit a desired set of properties and functionality. However, strategies to reliably isolate and manipulate the nanoscale building blocks based on their size, shape, or chemistry are still in their infancy. Among the promising candidates, DNA-me...
متن کاملComputer simulations of block copolymer tethered nanoparticle self-assembly.
We perform molecular simulations to study the self-assembly of block copolymer tethered cubic nanoparticles. Minimal models of the tethered nanoscale building blocks (NBBs) are utilized to explore the structures arising from self-assembly. We demonstrate that attaching a rigid nanocube to a diblock copolymer affects the typical equilibrium morphologies exhibited by the pure copolymer. Lamellar ...
متن کاملSoft Polymer Magnetic Nanocomposites: Microstructure Patterning by Magnetophoretic Transport and Self-Assembly.
A method to produce and pattern magnetic microstructure in a soft-polymer matrix is demonstrated. An externally applied magnetic field is used to influence the dynamics of magnetophoretic transport and dipolar self-assembly of magnetic nanoparticle clusters in the liquid precursor of poly-dimethylsiloxane (PDMS). Magnetic nanoparticles agglomerate by an interplay of van der Waals forces and dip...
متن کاملMagnetic Nanoparticle Arrays Self-Assembled on Perpendicular Magnetic Recording Media
We study magnetic-field directed self-assembly of magnetic nanoparticles onto templates recorded on perpendicular magnetic recording media, and quantify feature width and height as a function of assembly time. Feature widths are determined from Scanning Electron Microscope (SEM) images, while heights are obtained with Atomic Force Microscopy (AFM). For short assembly times, widths were ~150 nm,...
متن کامل