Calibration-Free Travel Time After Photobleaching Velocimetry

Audrey J. Wang; Jianyu Deng; David Westbury; Yi Wang; Guiren Wang

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arXiv · 2201.09159

Calibration-Free Travel Time After Photobleaching Velocimetry

Audrey J. Wang·Jianyu Deng·David Westbury·Yi Wang·Guiren Wang

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Abstract

In interfacial science, there is an increasing need to measure flow velocity fields at interfaces with ultrahigh spatial and temporal resolution to study transport phenomena. Although laser-induced fluorescence photobleaching anemometry (LIFPA) has achieved nanoscopic resolution for flow measurement, it requires pre-calibration, which is unavailable for unknown flows. We present a novel, calibration-free travel time after photobleaching velocimeter (TTAPV) which can both measure fluid flow velocity and satisfy the long-anticipated need of calibration for LIFPA.

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Audrey J. Wang, Jianyu Deng, David Westbury, Yi Wang, Guiren Wang. 2022-01-23. Calibration-Free Travel Time After Photobleaching Velocimetry. https://arxiv.org/abs/2201.09159

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