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

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-to...

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Published in:Sensors and actuators. B, Chemical Chemical, 2016-01, Vol.222, p.213-220
Main Authors: Caldara, Michele, Colleoni, Claudio, Guido, Emanuela, Re, Valerio, Rosace, Giuseppe
Format: Article
Language:English
Subjects:
Electronics
Fabrics
Litmus dye
Monitoring
Optoelectronic read out
pH sensors
Sensors
Sol–gel
Sweat
Textiles
Wearable
Wearable sensor
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cited_by cdi_FETCH-LOGICAL-c480t-1cf2ccae295e71c0e732f9f6c571cea27ca48e5c8ebc9d387382e792f012e40d3
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container_title Sensors and actuators. B, Chemical
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creator Caldara, Michele
Colleoni, Claudio
Guido, Emanuela
Re, Valerio
Rosace, Giuseppe
description 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.
doi_str_mv 10.1016/j.snb.2015.08.073
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1873-3077
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source Elsevier
subjects Electronics
Fabrics
Litmus dye
Monitoring
Optoelectronic read out
pH sensors
Sensors
Sol–gel
Sweat
Textiles
Wearable
Wearable sensor
title Optical monitoring of sweat pH by a textile fabric wearable sensor based on covalently bonded litmus-3-glycidoxypropyltrimethoxysilane coating
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