Direct Quantification of Rapid and Efficient Single-Stroke Actuation by a Martensitic Transition in a Thermosalient Crystal

Abdullah Khalil, Durga Prasad Karothu, Pance Naumov*

Research output: Contribution to journalArticlepeer-review

Abstract

Molecular dynamic crystals conveniently combine flexibility required for mechanical reconfiguration, strength for effective translation of elastic energy, and long-range order of mechanically coupled molecules for rapid conversion of disordered motion (heat) or photons (light) into ordered motion (work). By direct measurement of the actuation force generated by crystals of a thermosalient solid, here we describe the first direct quantification of the work performed and energy conversion that can be accomplished by using dynamic crystals as supramolecular actuators. Upon reversible α-to-γ phase transition, crystals of (phenylazophenyl)palladium hexafluoroacetylacetonate of submillimeter to millimeter size exert forces in the range of 1-100 mN upon longitudinal and lateral expansion. This work translates to a volumetric power density of about 1-3 MW m -3 and efficiency comparable to the existing multicomponent actuators.

Original languageEnglish (US)
Pages (from-to)3371-3375
Number of pages5
JournalJournal of the American Chemical Society
Volume141
Issue number8
DOIs
StatePublished - Feb 27 2019

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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