Doppler-Based Flow Rate Sensing in Microfluidic Channels
AbstractWe design, fabricate and experimentally demonstrate a novel generic method to detect flow rates and precise changes of flow velocity in microfluidic devices. Using our method we can measure flow rates of ~2 mm/s with a resolution of 0.08 mm/s. The operation principle is based on the Doppler shifting of light diffracted from a self-generated periodic array of bubbles within the channel and using self-heterodyne detection to analyze the diffracted light. As such, the device is appealing for variety of “lab on chip” bio-applications where a simple and accurate speed measurement is needed, e.g., for flow-cytometry and cell sorting. View Full-Text
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Stern, L.; Bakal, A.; Tzur, M.; Veinguer, M.; Mazurski, N.; Cohen, N.; Levy, U. Doppler-Based Flow Rate Sensing in Microfluidic Channels. Sensors 2014, 14, 16799-16807.
Stern L, Bakal A, Tzur M, Veinguer M, Mazurski N, Cohen N, Levy U. Doppler-Based Flow Rate Sensing in Microfluidic Channels. Sensors. 2014; 14(9):16799-16807.Chicago/Turabian Style
Stern, Liron; Bakal, Avraham; Tzur, Mor; Veinguer, Maya; Mazurski, Noa; Cohen, Nadav; Levy, Uriel. 2014. "Doppler-Based Flow Rate Sensing in Microfluidic Channels." Sensors 14, no. 9: 16799-16807.