Dynamic force spectroscopy on a single polymer chain

Hiroyuki Watabe, Ken Nakajima, Yasuhiro Sakai, Toshio Nishi

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)


    A technique based on atomic force microscopy (AFM) for dynamic measurement of mechanical properties of a single polymer chain was proposed. AFM. cantilever was mechanically oscillated at approximately 10 kHz during stretching process. By this technique, we could quantitatively estimate elongation-dependent changes of stiffness and viscosity of a single chain itself with using a phenomenological model. The solvent effect on the viscosity in low extension regions was investigated. It was ensured that the viscosity under 10 kHz perturbation was attributed to monomer - solvent friction. Viscosity quantization corresponding to consecutive detachments of polymer chains was also observed.

    Original languageEnglish
    Pages (from-to)5921-5925
    Number of pages5
    Issue number17
    Publication statusPublished - 2006 Aug 22

    ASJC Scopus subject areas

    • Organic Chemistry
    • Polymers and Plastics
    • Inorganic Chemistry
    • Materials Chemistry

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