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Wearable Sensor for Real-Time Monitoring of Electrolytes in Sweat †

Insight Centre for Data Analytics, National Centre for Sensor Research, Dublin City University, Dublin 9 D09 Y5N0, Ireland
ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong NSW 2522, Australia
Shimmer, DCU Alpha, Old Finglas Rd, Glasnevin, Dublin 11 D11 KXN4, Ireland
Author to whom correspondence should be addressed.
Presented at the 5th International Symposium on Sensor Science (I3S 2017), Barcelona, Spain, 27–29 September 2017.
Proceedings 2017, 1(8), 724;
Published: 22 November 2017
The measurement of sweat electrolytes has a number of important applications including monitoring the performance of athletes [1] and providing information on medical conditions such as cystic fibrosis [2]. Herein we present on a wearable non-invasive electrochemical-sensing platform for the detection of different electrolytes in sweat. The platform accesses sweat emerging through the skin during exercise, which is drawn across the sensors by capillary action to a highly adsorbent material reservoir. The sweat electrolyte composition is accessed via integrated solid-state ion-selective electrodes that can track their concentration in real time. The sensor data is digitised, stored locally, and subsequently transmitted via Bluetooth to a laptop. The platform design and fluidics have been optimised through several iterations using rapid prototyping technologies such as 3D printing. Results obtained during on body trials over a period of exercise are consistent with previously published data [3] on the use of wearable sensors for the real time monitoring of electrolytes levels in sweat.

Conflicts of Interest

The authors declare no conflict of interest.


  1. Glennon, T.; O’Quigley, C.; McCaul, M.; Matzeu, G.; Beirne, S.; Wallace, G.G.; Stroiescu, F.; O’Mahoney, N.; White, P.; Diamond, D. ‘SWEATCH’: A Wearable Platform for Harvesting and Analysing Sweat Sodium Content. Electroanalysis 2016, 28, 1283–1289. [Google Scholar] [CrossRef]
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  3. Gao, W.; Emaminejad, S.; Nyein, H.Y.Y.; Challa, S.; Chen, K.; Peck, A.; Fahad, H.M.; Ota, H.; Shiraki, H.; Kiriya, D.; et al. Fully integrated wearable sensor arrays for multiplexed in situ perspiration analysis. Nature 2016, 529, 509–514. [Google Scholar] [CrossRef] [PubMed]
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MDPI and ACS Style

McCaul, M.; Porter, A.; Glennon, T.; Barrett, R.; Beirne, S.; Wallace, G.G.; White, P.; Stroiescu, F.; Diamond, D. Wearable Sensor for Real-Time Monitoring of Electrolytes in Sweat. Proceedings 2017, 1, 724.

AMA Style

McCaul M, Porter A, Glennon T, Barrett R, Beirne S, Wallace GG, White P, Stroiescu F, Diamond D. Wearable Sensor for Real-Time Monitoring of Electrolytes in Sweat. Proceedings. 2017; 1(8):724.

Chicago/Turabian Style

McCaul, Margaret, Adam Porter, Tom Glennon, Ruairi Barrett, Stephen Beirne, Gordon G. Wallace, Paddy White, Florin Stroiescu, and Dermot Diamond. 2017. "Wearable Sensor for Real-Time Monitoring of Electrolytes in Sweat" Proceedings 1, no. 8: 724.

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