Longitudinal Inverted Compressibility in Super-strained Metamaterials

Zachary G. Nicolaou, Adilson E. Motter

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)1162-1174
Number of pages13
JournalJournal of Statistical Physics
Volume151
Issue number6
DOIs
StatePublished - Jun 2013

Keywords

  • Compressibility
  • Materials
  • Nonconvexities
  • Phase transitions

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics

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