Optics: measuring and testing – Velocity or velocity/height measuring – With light detector
Reexamination Certificate
2007-10-16
2007-10-16
Tarcza, Thomas H. (Department: 3662)
Optics: measuring and testing
Velocity or velocity/height measuring
With light detector
Reexamination Certificate
active
11368063
ABSTRACT:
Methods and apparatus for fluid flow velocity and flow rate measurement are provided. Fluid velocity is measured in optical method based on fluorescence photobleaching of a fluorescent dye. The invented method and apparatus requires a calibration relation between flow velocity and fluorescence signal and is easy to use. The invented method and apparatus can measure bulk flow velocity and flow rate inline, two and three components of flow velocity vector. It can also measure flow velocity in near wall region using evanescent wave. Since the invented method and apparatus uses molecular dye and calibration relation between flow velocity and fluorescence signal, it has ultra high spatial and temporal resolution. The invented method can be used not only to apparatuses and devices in conventional size, but also to that in MEMS and NEMS.
REFERENCES:
patent: 4866639 (1989-09-01), Adrian
patent: 6653651 (2003-11-01), Meinhart et al.
patent: 2004/0118217 (2004-06-01), Hirano et al.
patent: 2005/0176156 (2005-08-01), Hirano et al.
Jiang Hong
Wang Guiren
Ratcliffe Luke D.
Tarcza Thomas H.
Wang Guiren
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