Three-dimensional micro-printing of temperature sensors based on up-conversion luminescence
Date
2015
Authors
Wickberg, A.
Mueller, J.
Mange, Y.J.
Fischer, J.
Nann, T.
Wegener, M.
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Journal article
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Applied Physics Letters, 2015; 106(133103):2-5
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Abstract
The pronounced temperature dependence of up-conversion luminescence from nanoparticles doped with rare-earth elements enables local temperature measurements. By mixing these nanoparticles into a commercially available photoresist containing the low-fluorescence photo-initiator Irgacure 369, and by using three-dimensional direct laser writing, we show that micrometer sized local temperature sensors can be positioned lithographically as desired. Positioning is possible in pre-structured environments, e.g., within buried microfluidic channels or on optical or electronic chips. We use the latter as an example and demonstrate the measurement for both free space and waveguide-coupled excitation and detection. For the free space setting, we achieve a temperature standard deviation of 0.5 K at a time resolution of 1 s.
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Link to a related website: http://pdfs.semanticscholar.org/06ea/cdf796fea36216c7677ba7b655faf98b433c.pdf, Open Access via Unpaywall
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Copyright 2015 AIP Publishing