Abstract
We report the results of recent investigations on the statistical mechanics of membranes with in-plane crystalline or hexatic order1. Our motivation was to understand the interplay between thermally excited shape fluctuations (undulations) and degrees of freedom associated with the internal ordering of the membrane. The more usual membranes, in particular those described by the Helfrich2 free energy, are fluid in the sense that the molecules forming them freely and quickly rearrange to comply with shape fluctuations. As a consequence, it becomes possible to describe them as geometrical surfaces, whose free energy depends only on their shape.
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References
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Peliti, L., Nelson, D.R. (1987). Elasticity of Crystalline and Hexatic Membranes. In: Meunier, J., Langevin, D., Boccara, N. (eds) Physics of Amphiphilic Layers. Springer Proceedings in Physics, vol 21. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-83202-4_13
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DOI: https://doi.org/10.1007/978-3-642-83202-4_13
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