Universal negative poisson ratio of self-avoiding fixed-connectivity membranes.
نویسندگان
چکیده
We determine the Poisson ratio of self-avoiding fixed-connectivity membranes, modeled as impenetrable plaquettes, to be sigma = -0.37(6), in statistical agreement with the Poisson ratio of phantom fixed-connectivity membranes sigma = -0.32(4). Together with the equality of critical exponents, this result implies a unique universality class for fixed-connectivity membranes. Our findings thus establish that physical fixed-connectivity membranes provide a wide class of auxetic (negative Poisson ratio) materials with significant potential applications in materials science.
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عنوان ژورنال:
- Physical review letters
دوره 87 14 شماره
صفحات -
تاریخ انتشار 2001