다양한 유체굴절률에서의 μ-DDPIV 적용을 위한 calibration보정기법

This study presents a calibration compensation method for various refractive indices of working fluids in using micro defocusing digital particle image velocimetry (μ-DDPIV). The μ-DDPIV has been considered as one of advanced techniques for 3D particle tracking in a microvolume and 3D microflow diagnostics. In using the μ-DDPIV, the fluid refractive index is one of the important parameters by which the defocusing imaging is affected seriously. Therefore, the calibration coefficient compensation method should be beneficial. This paper describes the effects of the fluid refractive index (RI) on the z-calibration, and correlations between fluidrefractive index and calibration coefficient, (dz/dD).