Bridging from particle to macroscopic scales in uniaxial magnetic gels
arXiv:1411.5601 · doi:10.1063/1.4901275
Abstract
Connecting the different length scales of characterization is an important, but often very tedious task for soft matter systems. Here we carry out such a procedure for the theoretical description of anisotropic uniaxial magnetic gels. The so-far undetermined material parameters in a symmetry-based macroscopic hydrodynamic-like description are determined starting from a simplified mesoscopic particle-resolved model. This mesoscopic approach considers chain-like aggregates of magnetic particles embedded in an elastic matrix. Our procedure provides an illustrative background to the formal symmetry-based macroscopic description. There are presently other activities to connect such mesoscopic models as ours with more microscopic polymer-resolved approaches; together with these activities, our study complements a first attempt of scale-bridging from the microscopic to the macroscopic level in the characterization of magnetic gels.
arXiv comment14 pages, 7 figures
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- A density functional approach to ferrogels
- Classical density functional theory for a two-dimensional isotropic ferrogel model with labeled particles
- Magnetic elastomers as specific soft actuators -- predicting particular modes of deformation from selected configurations of magnetizable inclusions
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- Density functional approach to elastic properties of three-dimensional dipole-spring models for magnetic gels
- Hydrodynamic description of (visco)elastic composite materials and relative strains as a new macroscopic variable
- Interplay between particle microstructure, network topology and sample shape in magnetic gels -- A molecular dynamics simulation study