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Title: Real-time colorimetric hydration sensor for sport activities
Authors: Zhou, Yubin
Han, Htet
Naw, Hnin Pwint Phyuson
Lammy, Alice Venecia
Goh, Chee Hong
Boujday, Souhir
Steele, Terry W. J.
Keywords: Gold nanoparticles
Colorimetric detection
Issue Date: 2015
Source: Zhou, Y., Han, H., Naw, H. P. P., Lammy, A. V., Goh, C. H., Boujday, S., et al. (2016). Real-time colorimetric hydration sensor for sport activities. Materials and Design, 90, 1181-1185.
Series/Report no.: Materials and Design
Abstract: Dehydration and over-hydration are a serious health concern in endurance sport activities, especially in tropical climates. Current methods for detection are inconvenient and not widely applied. Point-of-care hydration monitoring during a sport event is an ideal preventative therapy, as it allows personalize real-time feedback towards preventing hydration related injuries.Gold nanoparticles allow colorimetric detection, whose color changes due to changes in colloidal stability. The red-shift in the plasmonic band induces a color change from red to purple upon aggregation that can be observed by the naked eye, which gives promising applications in point-of-care preventative therapies. We developed a gold nanoparticle-based colorimetric sensor for rapid detection of dehydration and over-hydration by monitoring ‘proof-of-concept’ artificial sweat ion concentrations. The colorimetric sensor was designed to distinguish between dehydration and over-hydration through easily observed color changes. In addition, the sensor exhibited a fast response time within minutes. The designed sensor is a promising tool for point-of-care and real-time detection of dehydration and over-hydration.
ISSN: 0261-3069
DOI: 10.1016/j.matdes.2015.06.078
Schools: School of Materials Science & Engineering 
Rights: © 2015 Elsevier Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Materials and Design, Elsevier Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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