Pressure-sensitive paint (PSP) is a photoluminescent coating to visualize surface pressure distributions on solid bodies placed in air [1]. Typical PSPs are composed of luminophores (porphyrins, transition metal complex compounds, aromatic compounds, etc.) and binder (polymers, porous materials, etc.), which immobilizes the luminophores on solid surfaces. When PSP is illuminated by light with an appropriate wavelength, the luminophores in the PSP emit luminescence. Due to the oxygen quenching [2], the intensity of the luminescence depends on the static pressure of air on the surface of the paint. Therefore, surface pressure distributions can be obtained from intensity distributions measured by imaging sensors such as charge-coupled device (CCD) or complementary metal oxide semiconductor (CMOS) cameras.
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