Piezoelectric Effect of Cellulose Nanocrystals Thin Films

Levente Csoka*, Ingrid C. Hoeger, Orlando J. Rojas, Ilona Peszlen, Joel J. Pawlak, Perry N. Peralta

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    112 Citations (Scopus)

    Abstract

    Ultrathin films of aligned cellulose nanocrystals (CNCs) were assembled on mica supports by using electric field-assisted shear. The relationship between polarization gradients and strain mechanics of the obtained films was examined by monitoring their deflection with an atomic force microscope operated in contact mode. The piezoelectric response of the films was ascribed to the collective contribution of the asymmetric crystalline structure of the cellulose crystals. The magnitude of the effective shear piezoelectric constant (d(25)) of highly ordered CNC films was determined to be 2.1 angstrom/V, which is comparable to that of a reference film of a piezoelectric metal oxide.

    Original languageEnglish
    Pages (from-to)867-870
    Number of pages4
    JournalACS Macro Letters
    Volume1
    Issue number7
    DOIs
    Publication statusPublished - Jul 2012
    MoE publication typeA1 Journal article-refereed

    Keywords

    • NATIVE CELLULOSE
    • ELECTRIC-FIELD
    • VALONIA CELLULOSE
    • MAGNETIC-FIELDS
    • ORIENTATION
    • SUSPENSIONS
    • ALIGNMENT
    • MICROCRYSTALS
    • CRYSTALS
    • PHASE

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