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Potentiometric sensors using cotton yarns, carbon nanotubes and polymeric membranes
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2013 (Engelska)Ingår i: The Analyst, ISSN 0003-2654, E-ISSN 1364-5528, Vol. 138, nr 18, s. 5208-5215Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A simple and generalized approach to build electrochemical sensors for wearable devices is presented. Commercial cotton yarns are first turned into electrical conductors through a simple dyeing process using a carbon nanotube ink. These conductive yarns are then partially coated with a suitable polymeric membrane to build ion-selective electrodes. Potentiometric measurements using these yarn-potentiometric sensors are demonstrated. Examples of yarns that can sense pH, K+ and NH4+ are presented. In all cases, these sensing yarns show limits of detection and linear ranges that are similar to those obtained with lab-made solid-state ion-selective electrodes. Through the immobilization of these sensors in a band-aid, it is shown that this approach could be easily implemented in a wearable device. Factors affecting the performance of the sensors and future potential applications are discussed.

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Royal Society of Chemistry, 2013. Vol. 138, nr 18, s. 5208-5215
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URN: urn:nbn:se:kth:diva-206911DOI: 10.1039/c3an00710cISI: 000323115200006Scopus ID: 2-s2.0-84881647301OAI: oai:DiVA.org:kth-206911DiVA, id: diva2:1094371
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QC 20170516

Tillgänglig från: 2017-05-09 Skapad: 2017-05-09 Senast uppdaterad: 2017-05-16Bibliografiskt granskad

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Crespo, Gaston A.
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