Measurement of thermal diffusivity of nonlinear optical polymer thin films using photoacoustic method

H. Kobayashi, K. I. Yoshida, M. Kubo, T. Tsukada, M. Hozawa, M. Sato

Research output: Contribution to journalArticlepeer-review

Abstract

We developed an apparatus to measure the thermal diffusivity of a nonlinear optical (NLO) polymer thin film where the measurement was based on the photoacoustic method. The validity of the measured data was verified by comparison with published ones for Ti and Pt metallic foils. The thermal diffusivity of a polymer thin film, polymethyl methacrylate (PMMA) with Disperse Red 1 (DR1) chromophore side group, is independent of the thickness and the percentage of the chromophore, and is almost constant at 6 x 10-8 m2/s. The thermal diffusivity of the electrically poled NLO polymer thin film is independent of the intensity of the applied electric field.

Original languageEnglish
Pages (from-to)918-922
Number of pages5
JournalJOURNAL of CHEMICAL ENGINEERING of JAPAN
Volume33
Issue number6
DOIs
Publication statusPublished - 2000 Dec 1

Keywords

  • Heat transfer
  • Nonlinear optical polymer
  • Photoacoustic method
  • Thermal diffusivity
  • Thin film

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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