Jump to main content
Jump to site search

Issue 18, 2013
Previous Article Next Article

Potentiometric sensors using cotton yarns, carbon nanotubes and polymeric membranes

Author affiliations

Abstract

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.

Graphical abstract: Potentiometric sensors using cotton yarns, carbon nanotubes and polymeric membranes

Back to tab navigation

Supplementary files

Publication details

The article was received on 09 Apr 2013, accepted on 10 May 2013 and first published on 13 May 2013


Article type: Paper
DOI: 10.1039/C3AN00710C
Citation: Analyst, 2013,138, 5208-5215
  •   Request permissions

    Potentiometric sensors using cotton yarns, carbon nanotubes and polymeric membranes

    T. Guinovart, M. Parrilla, G. A. Crespo, F. X. Rius and F. J. Andrade, Analyst, 2013, 138, 5208
    DOI: 10.1039/C3AN00710C

Search articles by author

Spotlight

Advertisements