Potentiometric sensors using cotton yarns, carbon nanotubes and polymeric membranes

Sökning: WFRF:(Rius J.) > Potentiometric sens...

QC 20170516
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.

Ingår i:The Analyst: Royal Society of Chemistry138:18, s. 5208-52150003-26541364-5528

Av författaren/redakt...: Guinovart, Tomas; Parrilla, Marc; Crespo, Gaston A ...; Rius, F. Xavier; Andrade, Francis ...

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