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Dielectric-based temperature sensing of nanoliter water samples with a post-processing tuned matching network

Gertjan Maenhout, Tomislav Markovic, Juncheng Bao, Georgios Stefanidis (UGent) , Ilja Ocket and Bart Nauwelaers
(2020) MEASUREMENT SCIENCE and TECHNOLOGY. 31(11).
Author
Organization
Abstract
Microfluidic devices present new opportunities for a wide range of applicationsin which the temperature control of nanoliter droplets is required. Due to the inherent size of the employed miniature volumes, several challenges exist, related to temperature measurements. In this work, we present a non-contact and label-free dielectric-based temperature measurement technique. A capacitive sensor transduces the temperature-dependent dielectric properties into a capacitive value. With a post-processing tuned matching network, the reflection coefficient of the capacitive sensor is minimized at a specific frequency, directly related to the sample temperature. The system is calibrated via a water-only calibration method, using two calibration values. A measurement accuracy of +/- 0.24 degrees C is achieved, with an offset of -0.19 degrees C, over a temperature range from 20 degrees C to 55 degrees C. The potential for simultaneous use of the proposed sensor as a microwave heater, gives us a dual-purpose device that minimizes the footprint of the chip, and thus its cost, while also reducing the number of electrical connections to the chip.
Keywords
Applied Mathematics, Instrumentation, Engineering (miscellaneous)

Citation

Please use this url to cite or link to this publication:

MLA
Maenhout, Gertjan, et al. “Dielectric-Based Temperature Sensing of Nanoliter Water Samples with a Post-Processing Tuned Matching Network.” MEASUREMENT SCIENCE and TECHNOLOGY, vol. 31, no. 11, 2020, doi:10.1088/1361-6501/ab9937.
APA
Maenhout, G., Markovic, T., Bao, J., Stefanidis, G., Ocket, I., & Nauwelaers, B. (2020). Dielectric-based temperature sensing of nanoliter water samples with a post-processing tuned matching network. MEASUREMENT SCIENCE and TECHNOLOGY, 31(11). https://doi.org/10.1088/1361-6501/ab9937
Chicago author-date
Maenhout, Gertjan, Tomislav Markovic, Juncheng Bao, Georgios Stefanidis, Ilja Ocket, and Bart Nauwelaers. 2020. “Dielectric-Based Temperature Sensing of Nanoliter Water Samples with a Post-Processing Tuned Matching Network.” MEASUREMENT SCIENCE and TECHNOLOGY 31 (11). https://doi.org/10.1088/1361-6501/ab9937.
Chicago author-date (all authors)
Maenhout, Gertjan, Tomislav Markovic, Juncheng Bao, Georgios Stefanidis, Ilja Ocket, and Bart Nauwelaers. 2020. “Dielectric-Based Temperature Sensing of Nanoliter Water Samples with a Post-Processing Tuned Matching Network.” MEASUREMENT SCIENCE and TECHNOLOGY 31 (11). doi:10.1088/1361-6501/ab9937.
Vancouver
1.
Maenhout G, Markovic T, Bao J, Stefanidis G, Ocket I, Nauwelaers B. Dielectric-based temperature sensing of nanoliter water samples with a post-processing tuned matching network. MEASUREMENT SCIENCE and TECHNOLOGY. 2020;31(11).
IEEE
[1]
G. Maenhout, T. Markovic, J. Bao, G. Stefanidis, I. Ocket, and B. Nauwelaers, “Dielectric-based temperature sensing of nanoliter water samples with a post-processing tuned matching network,” MEASUREMENT SCIENCE and TECHNOLOGY, vol. 31, no. 11, 2020.
@article{01GMD2SDKGCX802AT2V6AR98M3,
  abstract     = {{Microfluidic devices present new opportunities for a wide range of applicationsin which the temperature control of nanoliter droplets is required. Due to the inherent size of the employed miniature volumes, several challenges exist, related to temperature measurements. In this work, we present a non-contact and label-free dielectric-based temperature measurement technique. A capacitive sensor transduces the temperature-dependent dielectric properties into a capacitive value. With a post-processing tuned matching network, the reflection coefficient of the capacitive sensor is minimized at a specific frequency, directly related to the sample temperature. The system is calibrated via a water-only calibration method, using two calibration values. A measurement accuracy of +/- 0.24 degrees C is achieved, with an offset of -0.19 degrees C, over a temperature range from 20 degrees C to 55 degrees C. The potential for simultaneous use of the proposed sensor as a microwave heater, gives us a dual-purpose device that minimizes the footprint of the chip, and thus its cost, while also reducing the number of electrical connections to the chip.}},
  articleno    = {{115104}},
  author       = {{Maenhout, Gertjan and Markovic, Tomislav and Bao, Juncheng and Stefanidis, Georgios and Ocket, Ilja and Nauwelaers, Bart}},
  issn         = {{0957-0233}},
  journal      = {{MEASUREMENT SCIENCE and TECHNOLOGY}},
  keywords     = {{Applied Mathematics,Instrumentation,Engineering (miscellaneous)}},
  language     = {{eng}},
  number       = {{11}},
  pages        = {{11}},
  title        = {{Dielectric-based temperature sensing of nanoliter water samples with a post-processing tuned matching network}},
  url          = {{http://doi.org/10.1088/1361-6501/ab9937}},
  volume       = {{31}},
  year         = {{2020}},
}
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