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Sensors 2017, 17(7), 1667; doi:10.3390/s17071667

A Novel Physical Sensing Principle for Liquid Characterization Using Paper-Based Hygro-Mechanical Systems (PB-HMS)

1
Department of Mechanical and Industrial Engineering, Concordia University, 1455 De Maisonneuve Blvd, W. Montreal, QC H3G 1M8, Canada
2
Facultad de Ingeniería, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n Querétaro, Querétaro 76000, Mexico
*
Author to whom correspondence should be addressed.
Received: 2 June 2017 / Revised: 11 July 2017 / Accepted: 12 July 2017 / Published: 20 July 2017
(This article belongs to the Section Physical Sensors)
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Abstract

In recent years paper-based microfluidic systems have emerged as versatile tools for developing sensors in different areas. In this work; we report a novel physical sensing principle for the characterization of liquids using a paper-based hygro-mechanical system (PB-HMS). The PB-HMS is formed by the interaction of liquid droplets and paper-based mini-structures such as cantilever beams. The proposed principle takes advantage of the hygroscopic properties of paper to produce hygro-mechanical motion. The dynamic response of the PB-HMS reveals information about the tested liquid that can be applied to characterize certain properties of liquids. A suggested method to characterize liquids by means of the proposed principle is introduced. The experimental results show the feasibility of such a method. It is expected that the proposed principle may be applied to sense properties of liquids in different applications where both disposability and portability are of extreme importance. View Full-Text
Keywords: paper-based sensors; sensing principle; hygro-mechanical system; cantilever beam; hygroexpansive strain paper-based sensors; sensing principle; hygro-mechanical system; cantilever beam; hygroexpansive strain
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Perez-Cruz, A.; Stiharu, I.; Dominguez-Gonzalez, A. A Novel Physical Sensing Principle for Liquid Characterization Using Paper-Based Hygro-Mechanical Systems (PB-HMS). Sensors 2017, 17, 1667.

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