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. 2018 Mar 7;18(3):811. doi: 10.3390/s18030811

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(a) Layout of the TE₂₀-mode SIW resonator proposed as a dual-detection chemical sensor; (b) Side view of our proposed sensor. Liquid flows in the PDMS-based channels, while the bottom of the PDMS layer is covered using an adhesive bonding film, giving it its “noncontact” features. The fluid channel depth inside the PDMS layer is represented in a blue color; (c) Electric field distribution of the TE₂₀-mode SIW resonator resonating at 8.28 GHz (with both channels empty).

(a) Layout of the TE₂₀-mode SIW resonator proposed as a dual-detection chemical sensor; (b) Side view of our proposed sensor. Liquid flows in the PDMS-based channels, while the bottom of the PDMS layer is covered using an adhesive bonding film, giving it its “noncontact” features. The fluid channel depth inside the PDMS layer is represented in a blue color; (c) Electric field distribution of the TE₂₀-mode SIW resonator resonating at 8.28 GHz (with both channels empty).