Elastic deformations of loaded core-shell systems
arXiv:2204.12722 · doi:10.1007/s10659-022-09897-1
Abstract
Macroscopic elastic core-shell systems can be generated as toy models to be deformed and haptically studied by hand. On the mesoscale, colloidal core-shell particles and microgels are fabricated and investigated by different types of microscopy. We analyse, using linear elasticity theory, the response of spherical core-shell systems under the influence of a line density of force that is oriented radially and acts along the equator of the outer surface. Interestingly, deformational coupling of the shell to the core can determine the resulting overall appearance in response to the forces. We address various combinations of radii, stiffness, and Poisson ratio of core and shell and illustrate the resulting deformations. Macroscopically, the situation could be realized by wrapping a cord around the equator of a macroscopic model system and pulling it tight. On the mesoscale, colloidal microgel particles symmetrically confined to the interface between two immiscible fluids are pulled radially outward by surface tension.
arXiv comment18 pages, 5 figures, article
References in corpus (13)
- In Search of Colloidal Hard Spheres
- Phase behavior of a system of particles with core collapse
- Stimuli-responsive behavior of PNiPAm microgels under interfacial confinement
- Zero temperature phase diagram of the square-shoulder system
- Magnetostriction in magnetic gels and elastomers as a function of the internal structure and particle distribution
- Pattern formation in two-dimensional hard-core/soft-shell systems with variable soft shell profiles
- Structure of the square-shoulder fluid
- Particle Monte Carlo simulation of string-like colloidal assembly in 3 dimensions
- Particle Monte Carlo simulation of string-like colloidal assembly in 2 dimensions
- Towards a soft magnetoelastic twist actuator
- Magnetically induced elastic deformations of magnetic gels and elastomers containing particles of mixed size
- Elastic capsules at liquid-liquid interfaces
- Low-temperature crystal structures of the hard core square shoulder model