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arXiv · 2108.08971

Shape Entropy of a Reconfigurable Ising Surface

Benjamin N Katz·Lev Krainov·Vincent H Crespi
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Abstract

Disclinations in a 2D sheet create regions of Gaussian curvature whose inversion produces a reconfigurable surface with many distinct metastable shapes, as shown by molecular dynamics of a disclinated graphene monolayer. This material has a near-Gaussian "density of shapes" and an effectively antiferromagnetic interaction between adjacent cones. A $\sim10$ nm patch has hundreds of distinct metastable shapes with tunable stability and topography on the size scale of biomolecules. As every conical disclination provides an Ising-like degree of freedom, we call this technique "Isigami".

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Benjamin N Katz, Lev Krainov, Vincent H Crespi. 2021-08-20. Shape Entropy of a Reconfigurable Ising Surface. https://doi.org/10.1103/physrevlett.129.096102

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