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 journalArticle

    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-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

    Fingerprint

    Stroke
    Crystals
    Phase Transition
    Palladium
    Molecular Dynamics Simulation
    Photons
    Actuators
    Hot Temperature
    Light
    Energy conversion
    Strength of materials
    Molecular dynamics
    Phase transitions
    Molecules
    hexafluoroacetylacetonate

    ASJC Scopus subject areas

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

    Cite this

    Direct Quantification of Rapid and Efficient Single-Stroke Actuation by a Martensitic Transition in a Thermosalient Crystal. / Khalil, Abdullah; Karothu, Durga Prasad; Naumov, Pance.

    In: Journal of the American Chemical Society, Vol. 141, No. 8, 27.02.2019, p. 3371-3375.

    Research output: Contribution to journalArticle

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