| Issue |
J. Eur. Opt. Society-Rapid Publ.
Volume 20, Number 1, 2024
Plasmonica Collection
|
|
|---|---|---|
| Article Number | 10 | |
| Number of page(s) | 7 | |
| DOI | https://doi.org/10.1051/jeos/2024013 | |
| Published online | 15 April 2024 | |
Research Article
Development of a wearable surface enhanced Raman scattering sensor chip based on silver nanowires for rapid detection of urea, lactate and pH in sweat
1
Institute of Applied Physics “Nello Carrara” (IFAC), Italian National Research Council (CNR), Via Madonna del Piano 10, Sesto Fiorentino (Florence) I-50019, Italy
2
School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
* Corresponding authors: c.dandrea@ifac.cnr.it; p.matteini@ifac.cnr.it
Received:
9
January
2024
Accepted:
17
March
2024
A wearable sweat sensor chip based on surface-enhanced Raman spectroscopy (SERS) is here presented. The plasmonic core of the chip, obtained by deposition of silver nanowires on a polytetrafluoroethylene (PTFE) porous membrane, permits the direct and label-free detection of urea and lactate at physiologic concentrations in combination with the pH measurement in the range between 5 and 9. Once integrated with commercial biocompatible and adhesive tape layers, the as produced SERS-active chip provides a low-cost, flexible and wearable sensing device for rapid and reliable human sweat analysis. The chip was finally tested on real sweat samples to estimate lactate and urea during medium-intense exertions.
Key words: Wearable sensor / SERS / Sweat / Urea / Lactate / pH / Silver nanowires
© The Author(s), published by EDP Sciences, 2024
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