922 Analysis of PSP in High Knudsen Number Regime

Abstract

The pressure sensitive paint (PSP) technique has the capability to be applied to high Knudsen number flows, such as low density gas flows, micro-flows, and so on. However, applications of the PSP technique to micro/nanodevices have never been reported, because of the thickness of the conventional PSPs and of the low resolution caused by the aggregation of luminescent molecules. In this study, we have constructed ultrathin PSP films for micro/nanodevices by the Langmuir-Blodgett (LB) technique. Two luminophores are examined to select the suitable one for LB-PSP. Moreover, the dependence of luminescence intensity and oxygen sensitivity of the LB-PSP on the number of the layer is clarified.