Terahertz Spectroscopic Study on Protein Myoglobin: Polymer-Like Behavior of Vibrational Density of States

ORAL

Abstract

We performed terahertz time-domain spectroscopy on protein myoglobin to investigate the boson peak dynamics which universally appears in glassy materials and fracton which is expected to universally appear in polymer glasses. The obtained spectral shape of log ε'' vs log frequency [ε'': the imaginary part of complex dielectric constants] indicates that the fracton region appears above the boson peak frequency. The fractal and fracton dimensions were evaluated from the obtained spectra.

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Presenters

  • Leona Motoji

    Division of Materials Science, University of Tsukuba

Authors

  • Leona Motoji

    Division of Materials Science, University of Tsukuba

  • Tatsuya Mori

    Division of Materials Science, University of Tsukuba

  • Yasuhiro Fujii

    Department of Physical Sciences, Ritsumeikan University

  • Akitoshi Koreeda

    Department of Physical Sciences, Ritsumeikan University

  • Yue Jiang

    Division of Materials Science, University of Tsukuba

  • Kentaro Shiraki

    Division of Materials Science, University of Tsukuba

  • Yohei Yamamoto

    Division of Materials Science, University of Tsukuba

  • Seiji Kojima

    Division of Materials Science, University of Tsukuba