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Sensors 2010, 10(7), 6836-6847; https://doi.org/10.3390/s100706836

Optimization of Anodized-Aluminum Pressure-Sensitive Paint by Controlling Luminophore Concentration

Aerodynamic Research and Development Directorate, Japan Aerospace Exploration Agency/Chofu, Tokyo 182-8522, Japan
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Received: 16 June 2010 / Revised: 8 July 2010 / Accepted: 13 July 2010 / Published: 16 July 2010
(This article belongs to the Section Chemical Sensors)
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Abstract

Anodized-aluminum pressure-sensitive paint (AA-PSP) has been used as a global pressure sensor for unsteady flow measurements. We use a dipping deposition method to apply a luminophore on a porous anodized-aluminum surface, controlling the luminophore concentration of the dipping method to optimize AA-PSP characteristics. The concentration is varied from 0.001 to 10 mM. Characterizations include the pressure sensitivity, the temperature dependency, and the signal level. The pressure sensitivity shows around 60 % at a lower concentration up to 0.1 mM. Above this concentration, the sensitivity reduces to a half. The temperature dependency becomes more than a half by setting the luminophore concentration from 0.001 to 10 mM. There is 3.6-fold change in the signal level by varying the concentration. To discuss an optimum concentration, a weight coefficient is introduced. We can arbitrarily change the coefficients to create an optimized AA-PSP for our sensing purposes. View Full-Text
Keywords: anodized aluminum; pressure-sensitive paint; luminophore concentration; pressure sensitivity; temperature dependency anodized aluminum; pressure-sensitive paint; luminophore concentration; pressure sensitivity; temperature dependency
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Sakaue, H.; Ishii, K. Optimization of Anodized-Aluminum Pressure-Sensitive Paint by Controlling Luminophore Concentration. Sensors 2010, 10, 6836-6847.

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