Density fluctuations and phase transitions of ferroelectric polymer nanorods

ORAL

Abstract

Permittivity measurements in the high frequency limit (i.e. in spectral regions not affected by dielectric dispersions) represent an effective mean to asses density fluctuations in dependence on temperature. This is used in the current study to investigate the phase transitions of ferroelectric polymer nanorods (crystallization, melting, Curie-transitions) down to diameters as small as 15 nm. As fabrication templates -- and in the same time as measurement platforms in combination with Broadband Dielectric Spectroscopy -- ordered arrays of parallel cylindrical nanopores are employed.

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Authors

  • Thomas Russell

    • University of Massachusetts Amherst
    • Univ. Massachusetts Amherst, Dept. of Polymer Sci. Eng.
    • University of Massachusetts
    • Polymer Science and Engineering Department, University of Massachusetts Amherst
    • Department of Polymer Science and Engineering University of Massachusetts Amherst
    • University of Massachusetts, Amherst
    • University of Massuchusetts at Amherst
    • Department of Polymer Science and Engineering, University of Massachusetts Amherst
    • University of Massachusetts-Amherst
    • Department of Polymer Science and Engineering, University of Massachusetts, Amherst
    • Polymer Science and Engineering Department, University of Massachusetts-Amherst

  • Anatoli Serghei

    • University of Massachusetts Amherst