Application of pressure-sensitive paints to low-pressure range

Tomohide Niimi, Masaki Yoshida, Makoto Kondo, Yusuke Oshima, Hideo Mori, Yasuhiro Egami, Keisuke Asai, Hiroyuki Nishide

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43 Citations (Scopus)


The pressure-sensitive paint (PSP) technique has potential as a powerful diagnostic tool for measurements in the high Knudsen number regime because it is based on luminescence of molecules. Three types of PSP [two composed of organic dye and polymer (luminophore/binder), platinum octaethylporphyrin (PtOEP)/silicone polymer (GP197) and platinumtetrakis (pentafluorophenyl) porphyrin (PtTFPP)/poly[1-(trimethylsilyl)-propyne] [poly(TMSP)], and the other ruthenium II tris (4,7-diphenyl-l, 10-phenanthrolin chloride (Bath-Ru) adsorbed on anodized aluminum] are applied to the rarefied gas flow mainly lower than 150 Pa (about 1 torr) to examine fundamental properties, such as pressure/temperature sensitivity, time response of luminescence, and so on. The results show PtTFPP/poly(TMSP) to be the most suitable PSP among them for application in the low-pressure range because it has very high and linear sensitivity against oxygen pressure. However, temperature sensitivity of PtTFPP/poly(TMSP) is not negligible, and a correction of temperature is required for quantitative pressure measurement with high accuracy. Finally, pressure distribution of a surface on which a low-density supersonic freejet impinges is measured by the PSP.

Original languageEnglish
Pages (from-to)9-16
Number of pages8
JournalJournal of Thermophysics and Heat Transfer
Issue number1
Publication statusPublished - 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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