3D printed optofluidic biosensor: NaYF4: Yb3+, Er3+ upconversion nano-emitters for temperature sensing

Habibi, M., Bagheri, P., Ghazyani, N., Zare-Behtash, H. and Heydari, E. (2021) 3D printed optofluidic biosensor: NaYF4: Yb3+, Er3+ upconversion nano-emitters for temperature sensing. Sensors and Actuators A: Physical, 326, 112734. (doi: 10.1016/j.sna.2021.112734)

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The nonintrusive, realtime, and accurate measurement of the local temperature has applications in a variety of scenarios. This need has led to significant research to develop novel nanophotonic sensors. In this paper, a 3D-printed optofluidic chip is nano-engineered for local, contactless, and precise optical measurement of temperature in microfluidic channels using lanthanide-doped upconversion nanoparticles. Temperature sensing nano-emitters are doped in a UV-curable matrix and embedded into a microfluidic channel using maskless photolithography. Photoluminescence of NaYF4:Yb3+, Er3+ upconversion nanoparticles have two bands in the green spectrum in which the PL maximums at 521 nm and 541 nm are used for temperature sensing. Thus, enabling ratiometric temperature sensing when excited using near-infrared light, which is desirable for measurements in biological and biomedical settings. The functionality of the temperature sensor for local and nonintrusive measurements in a microalgae culture medium is demonstrated.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Zare-Behtash, Dr Hossein
Authors: Habibi, M., Bagheri, P., Ghazyani, N., Zare-Behtash, H., and Heydari, E.
Subjects:Q Science > Q Science (General)
Q Science > QC Physics
Q Science > QD Chemistry
T Technology > T Technology (General)
College/School:College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
Journal Name:Sensors and Actuators A: Physical
ISSN (Online):1873-3069
Published Online:02 April 2021
Copyright Holders:Copyright © 2021 Elsevier B.V.
First Published:First published in Sensors and Actuators A: Physical 326: 112734
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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