Elasticity of an interfacial particle raft

Details Elasticity of an interfacial particle raft Elasticity of an interfacial particle raft

2004-06-29

arxiv.org/abs/cond-mat/0406723v2

Europhys. Lett., 68 (2), pp. 212-218 (2004)

Physics

Condensed Matter

Soft Condensed Matter

7 pages, 5 figures

Scientific paper

10.1209/epl/i2004-10202-x

We study the collective behaviour of a close packed monolayer of non-Brownian particles at a fluid-liquid interface. Such a particle raft forms a two-dimensional elastic solid and can support anisotropic stresses and strains, e.g. it buckles in uniaxial compression and cracks in tension. We characterise this solid in terms of a Young's modulus and Poisson ratio derived from simple theoretical considerations and show the validity of these estimates by using an experimental buckling assay to deduce the Young's modulus.

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