Optical monitoring of sweat pH by a textile fabric wearable sensor based on covalently bonded litmus-3-glycidoxypropyltrimethoxysilane coating

By M. Caldara, C. Colleoni, E. Guido, V. Re, G. Rosace. 2016

158 citations recorded by the source corpus.

Abstract A wearable, flexible and non-toxic pH sensor was fabricated by assembling a cotton fabric treated with an organically modified silicate (ORMOSIL) together with a miniaturized and low-power electronics with wireless interface. The pH sensible ORMOSIL was obtained via sol–gel by using litmus, a non-toxic pH indicator, and 3-glycidoxypropyltrimethoxysilane (GPTMS) as siloxane precursor. The chemical structure of the ORMOSIL was analyzed by FTIR and UV–vis spectroscopy. The electronics has been first characterized in a standalone fashion, and successively it has been coupled to the smart fabric, in the laboratory and in preliminary on-body trials. A sweat real-time monitoring is particularly attractive for healthcare, fitness and wellness areas.

Subfields: Bioengineering, Biomedical Engineering, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/036b0a859eebb7b0009a6a071503bda5769c9aad

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In Biomedical Engineering

1. G. M. N. Islam
2. Azam Ali
3. S. Collie

Citations in the corpus

• Textile sensors for wearable applications: a comprehensive review (2020, methodology): “…to attach with existing electronic components Post et al. (2000) pulse, heart function and body temperature with improved comfort during use (Filipowska et al. 2016); and have also been used to measure pH of sweat for disease diagnosis and drug assumption monitoring (Caldara et al. 2016).”