Journal of Statistical Physics

, Volume 151, Issue 6, pp 1162–1174

Longitudinal Inverted Compressibility in Super-strained Metamaterials

Article

DOI: 10.1007/s10955-013-0742-8

Cite this article as:
Nicolaou, Z.G. & Motter, A.E. J Stat Phys (2013) 151: 1162. doi:10.1007/s10955-013-0742-8

Abstract

We develop a statistical physics theory for solid-solid phase transitions in which a metamaterial undergoes longitudinal contraction in response to increase in external tension. Such transitions, which are forbidden in thermodynamic equilibrium, have recently been shown to be possible during the decay of metastable, super-strained states. We present a first-principles model to predict these transitions and validate it using molecular dynamics simulations. Aside from its immediate mechanical implications, our theory points to a wealth of analogous inverted responses, such as inverted susceptibility or heat-capacity transitions, allowed when considering realistic scales.

Keywords

Phase transitions Compressibility Materials Nonconvexities 

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Department of PhysicsCalifornia Institute of TechnologyPasadenaUSA
  2. 2.Department of Physics and Astronomy and Northwestern Institute on Complex SystemsNorthwestern UniversityEvanstonUSA

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