6533b824fe1ef96bd1280179
RESEARCH PRODUCT
Cluster growth with long-range interactions
Helmut MöhwaldAndrea C. LeviEnrico ScalasGiovanni IndiveriAlessandra Gliozzisubject
PhysicsMonolayersLangmuirRange (particle radiation)Condensed matter physicsRamification (botany)Metals and AlloysEvaporationSurfaces and InterfacesComputer simulationSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsClustersDipoleChemical physicsClusters Computer simulation Surface morphology MonolayersMonolayerMaterials ChemistryCluster (physics)Hexagonal latticeSurface morphologydescription
Abstract Growth models in which the morphology depends on interactions of the type V(r) = C r n are presented. The growth algorithms are generalizations of DLA. The particles diffuse on a triangular lattice and eventually either stick to the cluster or are lost. Several processes are simulated in this way: in one case only pure sticking is taken into account, in another case evaporation and rearrangement are also allowed to occur. In the former case (with attractive interactions) the clusters exhibit a highly symmetric shape (a sixfold star) whose detailed structure depends on n , C kT , and time. In the latter case (studied with repulsive dipolar interactions) the tendency to ramification already present in the absence of long-range forces is enhanced. The morphologies resemble the gel clusters growing from the fluid phase in Langmuir monolayers.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1996-09-01 |