Composites with extremal thermal expansion coefficients

O. Sigmund, S. Torquato

Research output: Contribution to journalArticlepeer-review

320 Scopus citations


We design three-phase composites having maximum thermal expansion, zero thermal expansion, or negative thermal expansion using a numerical topology optimization method. It is shown that composites with effective negative thermal expansion can be obtained by mixing two phases of positive thermal expansions with a void phase. We also show that there is no mechanistic relationship between negative thermal expansion and negative Poisson's ratio.

Original languageEnglish (US)
Pages (from-to)3203-3205
Number of pages3
JournalApplied Physics Letters
Issue number21
StatePublished - Nov 18 1996

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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