Back
Field-controlled self-assembly and disassembly of colloidal nanoparticles.
Journal article

Field-controlled self-assembly and disassembly of colloidal nanoparticles.

  • Lattuada M ETH Zürich, Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, Wolfgang Pauli Strasse 10, CH-8093 Zürich, Switzerland. marco.lattuada@chem.ethz.ch
  • Furlan M
  • Harshe Y
  • 2011-11-08
Published in:
  • Chimia. - 2011
Chemistry
Colloids
Computer Simulation
Kinetics
Magnetics
Materials Testing
Microscopy, Electron, Scanning
Nanoparticles
Nanotechnology
Porosity
Pressure
Silicon Dioxide
Static Electricity
Temperature
Time Factors
English Self-assembly of nanoparticles is one of the most promising methods for the preparation of novel materials and devices with exceptional properties. In order to control nanoparticles self-assembly, an understanding of their interactions is absolutely necessary. One convenient way to achieve a control on their interaction is through the use of external fields. Here we provide two different examples of how interparticle interactions are affected by interactions with external fields. In the first case, magnetic fields are used to induce dipolar interactions among concentrated suspension of superparamagnetic nanocolloids, which cause them to self-assemble into dense chain-like anisotropic structures, used as templates for the growth of porous materials with tunable properties. In the second case, it is shown how more commonly employed but less understood flow fields interact with clusters of particles, and lead to their restructuring or disassembly depending upon the shear stress applied.
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://sonar.ch/global/documents/93840
Statistics
Document views: 39 File downloads: