Mechanical properties of a single polymer chain

Ken Nakajima

    Research output: Contribution to conferencePaperpeer-review


    Several phenomena related to statistical mechanics of a single polymer chain were investigated by atomic force microscopy (AFM). A method, which is called as "nanofishing," enabled us to stretch a single polymer chain with picking it at its two modified termini. A stress-strain curve obtained for a polystyrene oligomer with thiol termini in a good solvent showed a good agreement with a worm-like chain model, and thus gave microscopic information about entropic elasticity. The further study aiming at a " nanorheological" measurement on a single polymer chain also revealed an energy dissipation processes via monomer-monomer or monomer-solvent frictions. In order to perform such dynamic measurement, a commercially available AFM was modified, which will be discussed in detail at the site.

    Original languageEnglish
    Number of pages3
    Publication statusPublished - 2005 Dec 1
    Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
    Duration: 2005 May 252005 May 27


    Other54th SPSJ Annual Meeting 2005


    • Atomic force microscopy
    • Energy dissipation
    • Entropic Elasticity
    • Nanofishing
    • Single polymer chain
    • Worm-like chain model

    ASJC Scopus subject areas

    • Engineering(all)


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