Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/34144
Title: | Monitoring Body Fluids in Textiles: Combining Impedance and Thermal Principles in a Printed, Wearable, and Washable Sensor | Authors: | JOSE, Manoj OUDEBROUCKX, Gilles BORMANS, Seppe Veske, Paula THOELEN, Ronald DEFERME, Wim |
Issue Date: | 2021 | Publisher: | AMER CHEMICAL SOC | Source: | ACS Sensors, 6 (3) , p. 896 -907 | Abstract: | This work explores the feasibility of coupling two different techniques, the impedance and the transient plane source (TPS) principle, to quantify the moisture content and its compositional parameters simultaneously. The sensor is realized directly on textiles with the use of printing and coating technology. Impedance measurements use the fluid's electrical properties, while the TPS measurements are based on the thermal effusivity of the liquid. Impedance and TPS measurements show equal competency in measuring the fluid volume with a lowest measurable quantity of 0.5 mu L, enabling ultralow volume passive measurements for sweat analysis. Both sensor principles were tested by monitoring the drying of a wet cloth and the measurements show perfect repeatability and accuracy. Nevertheless, when the biofluid property changes, the TPS sensor does not reflect this information on its readings, whereas, on the other hand, impedance can provide information on compositional changes. However, since the volume of the fluid changes simultaneously, one cannot differentiate between a volume change and a compositional change from impedance measurements alone. Therefore, we show in this work that we can apply impedance to measure the compositional properties; meanwhile, the TPS measurements accurately carry out volume measurements irrespective of the interferences from its compositional variations. To prove this, both of these techniques are applied for the quantification and composition monitoring of sweat, showing the capability to measure moisture content and compositional parameters simultaneously. TPS measurements can also be an indicator of the local temperature of the medium confined by the sensor, and it does not influence the fluid parameters. Compiling both impedance and thermal sensors in a single platform triggers smart wearable prospects of metering the liquid volume and simultaneously analyzing other compositional changes and body temperature. Finally, the repeatability and stability of the sensor readings and the washability of the device are tested. This device could be a potential sensing tool in real-life applications, such as wound monitoring and sweat analysis, and could be a promising addition toward future smart wearable sensors. | Notes: | Deferme, W (corresponding author), Hasselt Univ, Inst Mat Res IMO IMOMEC 1, B-3590 Diepenbeek, Belgium.; Deferme, W (corresponding author), IMEC, Div IMOMEC, B-3590 Diepenbeek, Belgium. wim.deferme@uhasselt.be |
Other: | Deferme, W (corresponding author), Hasselt Univ, Inst Mat Res IMO IMOMEC 1, B-3590 Diepenbeek, Belgium ; IMEC, Div IMOMEC, B-3590 Diepenbeek, Belgium. wim.deferme@uhasselt.be | Keywords: | textile;biofluid;printed;moisture content;composition analysis;sweat monitoring;ionic concentration;temperature measurement;washability | Document URI: | http://hdl.handle.net/1942/34144 | ISSN: | 2379-3694 | e-ISSN: | 2379-3694 | DOI: | 10.1021/acssensors.0c02037 | ISI #: | WOS:000635484500034 | Rights: | © 2021 American Chemical Society | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2022 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
proof.pdf | Peer-reviewed author version | 4.11 MB | Adobe PDF | View/Open |
acssensors.0c02037.pdf Restricted Access | Published version | 4.64 MB | Adobe PDF | View/Open Request a copy |
WEB OF SCIENCETM
Citations
20
checked on Oct 14, 2024
Page view(s)
60
checked on Sep 7, 2022
Download(s)
90
checked on Sep 7, 2022
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.