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  • Title: Photoacoustic imaging velocimetry for flow-field measurement.
    Author: Ma S, Yang S, Xing D.
    Journal: Opt Express; 2010 May 10; 18(10):9991-10000. PubMed ID: 20588853.
    Abstract:
    We present the photoacoustic imaging velocimetry (PAIV) method for flow-field measurement based on a linear transducer array. The PAIV method is realized by using a Q-switched pulsed laser, a linear transducer array, a parallel data-acquisition equipment and dynamic focusing reconstruction. Tracers used to track liquid flow field were real-timely detected, two-dimensional (2-D) flow visualization was successfully reached, and flow parameters were acquired by measuring the movement of the tracer. Experimental results revealed that the PAIV method would be developed into 3-D imaging velocimetry for flow-field measurement, and potentially applied to research the security and targeting efficiency of optical nano-material probes.
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