| Motivated by recent experiments on a binary liquid mixture, we study the critical properties of a system in the Ising universality class, in a film geometry in the presence of a chemically structured substrate, with alternating adsorption preference. By means of Monte Carlo simulations of an improved Hamiltonian, so that the leading scaling corrections are suppressed, numerical integration, and finite-size scaling analysis we determine the critical Casimir force and its universal scaling function. |
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