Abstract
The topic of the gel transition in two dimensions is revisited by considering data on the shear elasticity of Langmuir monolayers of different spherical objects. Amorphous freezing can be associated to structural percolation in a lattice able to resist shear stresses. The shear modulus and its dependence on the packing fraction are found to strongly depend on the details of the interaction potential and largely differ from expectations for entropic networks. This behaviour can be interpreted in terms of more elaborated percolation theories including central forces and bond-bending forces.
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Maestro, A., Langevin, D. & Monroy, F. Amorphous freezing in two dimensions: From soft coils to rigid particles. Eur. Phys. J. E 31, 89–94 (2010). https://doi.org/10.1140/epje/i2010-10554-x
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DOI: https://doi.org/10.1140/epje/i2010-10554-x