Journal Title
Title of Journal: J Vis
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Abbravation: Journal of Visualization
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Publisher
Springer-Verlag
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Authors: Dae Hun Song Hyun Dong Kim Kyung Chun Kim
Publish Date: 2011/06/07
Volume: 14, Issue: 3, Pages: 295-
Abstract
A planar optode system based on an oxygen quenchable luminophore platinum II octaethyporphrin PtOEP bound with thin polystyrene PS film and UV lightemitting diodes UVLEDs was developed to measure the dissolved oxygen DO concentration field in microscale water flows An intensitybased method adopting a pixeltopixel in situ calibration technique was used to visualize DO concentration fields in a Yshaped microchannel The achievable spatial resolution of the acquired concentration map could be as high as 294 μm The diffusion process of DO through the interface between two parallel water flows having different DO concentrations was quantitatively analyzed We found that the thickness of the concentration gradient of DO increased as the Reynolds number decreased The ratio of diffusion length scales coincided with the ratio of inner scales of viscous shear layers in the microchannel for two different Reynolds numbersThis work was supported by the National Research Foundation NRF of Korea through a grant funded by the Korean Government No 20100000448 No K2070200164810E010007010 This work was supported by the second phase of Brain Korea21 Project in 2010
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