Calculation of Al2O3 contents in Al2O3-PTFE composite thick films fabricated by using the aerosol deposition

Hyung Jun Kim, Yoon Hyun Kim, Song Min Nam, Young Joon Yoon, Jong Hee Kim

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14 Citations (Scopus)


Low-temperature fabrication of Al2O3-PTFE (poly tetra fluoro ethylene) composite thick films for flexible integrated substrates was attempted by using the aerosol deposition method. For optimization of composite thick films, a novel calculation method for the ceramic contents in the composites was attempted. Generally, a thermogravimetry (TG) analysis is used to calculate the ceramic contents in the ceramic-polymer composites. However, the TG analysis requires a long measurement time in each analysis, so we studied a novel calculation method that used a simple dielectric measurement. We used Hashin-Shtrikman bounds to obtain numerical results for the relationship between the dielectric constant of the composites and the contents of Al2O3. A 3-D electrostatic simulation model similar to the deposited Al2O3-PTFE composite thick films was prepared, and the simulation result was around the lower bound of the Hashin-Shtrikman bounds. As a result, we could calculate the Al2O3 contents in the composites with a low error of below 5 vol.% from convenient dielectric measurements, and the Al2O3 contents ranged from 51 vol.% to 54 vol.%.

Original languageEnglish
Pages (from-to)1086-1091
Number of pages6
JournalJournal of the Korean Physical Society
Issue number41
Publication statusPublished - 2010 Oct 15
Externally publishedYes


  • Aerosol deposition method
  • AlO
  • Ceramic contents
  • Integrated substrate
  • PTFE

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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