Percolation of heteronuclear dimers irreversibly deposited on square lattices
| Autor: | A.J. Ramirez-Pastor, M. C. Gimenez |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Degree (graph theory) Ciencias Físicas Dimer purl.org/becyt/ford/1.3 [https] Type (model theory) Otras Ciencias Físicas 01 natural sciences Molecular physics Square (algebra) 010305 fluids & plasmas purl.org/becyt/ford/1 [https] numerical simulations percolation dimers chemistry.chemical_compound Heteronuclear molecule chemistry Percolation 0103 physical sciences 010306 general physics Scaling CIENCIAS NATURALES Y EXACTAS Phase diagram |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| ISSN: | 2470-0053 |
| Popis: | The percolation problem of irreversibly deposited heteronuclear dimers on square lattices is studied. A dimer is composed of two segments, and it occupies two adjacent adsorption sites. Each segment can be either a conductive segment (segment type A) or a nonconductive segment (segment type B). Three types of dimers are considered: AA, BB, and AB. The connectivity analysis is carried out by accounting only for the conductive segments (segments type A). The model offers a simplified representation of the problem of percolation of defective (nonideal) particles, where the presence of defects in the system is simulated by introducing a mixture of conductive and nonconductive segments. Different cases were investigated, according to the sequence of deposition of the particles, the types of dimers involved in the process, and the degree of alignment of the deposited objects. By means of numerical simulations and finite-size scaling analysis, the complete phase diagram separating a percolating from a nonpercolating region was determined for each case. Finally, the consistency of our results was examined by comparing with previous data in the literature for linear k-mers (particles occupying k adjacent sites) with defects. Fil: Gimenez, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina Fil: Ramirez Pastor, Antonio Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|