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Proceedings Paper

Simultaneous sensing of fluid velocity and temperature using particle tracers embedding nitrobenzofurazan functionalized thermosensitive hydrogels
Author(s): Filippo Cellini; Sean D. Peterson; Maurizio Porfiri
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Paper Abstract

Particle image velocimetry is an experimental technique for measuring the velocity field of a moving fluid by tracking small particles dispersed within the flow. To extend this technique to the study of fluid temperature, we propose a novel tracer particle which enables direct measurement of the velocity, while acting as a temperature sensor by increasing its fluorescence intensity when the local fluid temperature rises above 32°C. Thermoresponsive tracers are prepared by incorporating nitrobenzofurazan functionalized hydrogels within optically transparent polydimethylsiloxane microspheres. We demonstrate the application of the tracers in the study of forced thermal convection in water around a heated cylinder in an open channel.

Paper Details

Date Published: 12 April 2017
PDF: 6 pages
Proc. SPIE 10168, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017, 1016816 (12 April 2017); doi: 10.1117/12.2257362
Show Author Affiliations
Filippo Cellini, New York Univ. (United States)
Sean D. Peterson, New York Univ. (United States)
Univ. of Waterloo (Canada)
Maurizio Porfiri, New York Univ. (United States)


Published in SPIE Proceedings Vol. 10168:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017
Jerome P. Lynch, Editor(s)

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