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Meta-atom microfluidic sensor for measurement of dielectric properties of liquids

journal contribution
posted on 2024-11-02, 03:44 authored by Robiatun Adayiah Awang, Francisco Tovar LopezFrancisco Tovar Lopez, Thomas Baum, Sharath SriramSharath Sriram, Wayne RoweWayne Rowe
High sensitivity microwave frequency microfluidic sensing is gaining popularity in chemical and biosensing applications for evaluating the dielectric properties of liquid samples. Here, we show that a tiny microfluidic channel positioned in the gaps of a dual-gap meta-atom split-ring resonator can exploit the electric field sensitivity to predict the dielectric properties of liquid samples. Employing an empirical relation between resonant characteristics of the fabricated sensor and the complex permittivity of water-ethanol or water-methanol mixtures produces good congruence to standardized values from the literature. This microfluidic sensor offers a potential lab-on-chip solution for liquid dielectric characterization without external electrical connections.

History

Journal

Journal of Applied Physics

Volume

121

Number

094506

Issue

9

Start page

1

End page

8

Total pages

8

Publisher

AIP Publishing

Place published

United States

Language

English

Copyright

© 2017 AIP Publishing LLC. Article copyright remains as specified within the article.

Former Identifier

2006072011

Esploro creation date

2020-06-22

Fedora creation date

2017-06-07