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Wettability Alteration in Functional Capillary Tube for Visual Quantitative Point of Care Testing

Abstract

Capillarity is an extremely common physical-chemical phenomenon related to wettability in nature, which has wide theoretical and practical interest. Herein, we reported a facile sensing device based on capillary force change in vertical capillary tube. In this height-based capillary sensor (HCS), the inner surface of the capillary tube was modified with a layer of molecules with wetting responsibility based on the well-known simple surface chemistry. With targets in different concentrations, the wettability of the surface modified with responsive molecules would produce different changes. The responsive surfaces would change the capillary force of the vertical capillary tube, and result in different column height. Like a thermometer, H+ and phenol has been quantified visually based on the height of the liquid inside the capillary tube.

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Publication details

The article was received on 21 Apr 2018, accepted on 16 May 2018 and first published on 18 May 2018


Article type: Communication
DOI: 10.1039/C8AN00735G
Citation: Analyst, 2018, Accepted Manuscript
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    Wettability Alteration in Functional Capillary Tube for Visual Quantitative Point of Care Testing

    Y. Li, X. Jiao, X. Du, F. Wang, Q. Wei, Y. Wen and X. Zhang, Analyst, 2018, Accepted Manuscript , DOI: 10.1039/C8AN00735G

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