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Proceedings Paper

Optofluidic microring flowmeter based on heat transfer effect
Author(s): Yuan Gong; Minglei Zhang; Chaoyang Gong; Yu Wu; Yunjiang Rao; Xudong Fan
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Paper Abstract

We demonstrate an optofluidic flow rate sensor based on the heat transfer effect in a microfluidic channel for the lab-on-a-chip applications. By employing an optofluidic ring resonator (OFRR), the wavelength shift of the resonant dip of the whispering gallery mode is detected as a function of the flow rate when the flow is heated by a 1480 nm laser. A measurement range of 2 μL/min - 100 μL/min, a minimum detectable change of 30 nL/min for the flow rate detection are achieved. Experimental results indicate that the OFRR flow rate sensor has good repeatability and the inverse sensitivity is beneficial for detecting the low flow rate with high sensitivity.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103235U (23 April 2017); doi: 10.1117/12.2262995
Show Author Affiliations
Yuan Gong, Univ. of Electronic Science and Technology of China (China)
Univ. of Michigan (United States)
Minglei Zhang, Univ. of Electronic Science and Technology of China (China)
Chaoyang Gong, Univ. of Electronic Science and Technology of China (China)
Yu Wu, Univ. of Electronic Science and Technology of China (China)
Yunjiang Rao, Univ. of Electronic Science and Technology of China (China)
Xudong Fan, Univ. of Michigan (United States)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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