Skip to main content

Research Repository

Advanced Search

Textile-Based Potentiometric Electrochemical pH Sensor for Wearable Applications

Manjakkal, Libu; Dang, Wenting; Yogeswaran, Nivasan; Dahiya, Ravinder


Wenting Dang

Nivasan Yogeswaran

Ravinder Dahiya


In this work, we present a potentiometric pH sensor on textile substrate for wearable applications. The sensitive (thick film graphite composite) and reference electrodes (Ag/AgCl) are printed on cellulose-polyester blend cloth. An excellent adhesion between printed electrodes allow the textile-based sensor to be washed with a reliable pH response. The developed textile-based pH sensor works on the basis of electrochemical reaction, as observed through the potentiometric, cyclic voltammetry (100 mV/s) and electrochemical impedance spectroscopic (10 mHz to 1 MHz) analysis. The electrochemical double layer formation and the ionic exchanges of the sensitive electrode-pH solution interaction are observed through the electrochemical impedance spectroscopic analysis. Potentiometric analysis reveals that the fabricated textile-based sensor exhibits a sensitivity (slope factor) of 4 mV/pH with a response time of 5 s in the pH range 6–9. The presented sensor shows stable response with a potential of 47 ± 2 mV for long time (2000 s) even after it was washed in tap water. These results indicate that the sensor can be used for wearable applications.


Manjakkal, L., Dang, W., Yogeswaran, N., & Dahiya, R. (2019). Textile-Based Potentiometric Electrochemical pH Sensor for Wearable Applications. Biosensors, 9(1), Article 14.

Journal Article Type Article
Acceptance Date Jan 15, 2019
Online Publication Date Jan 16, 2019
Publication Date 2019
Deposit Date Jul 19, 2022
Publicly Available Date Jul 20, 2022
Journal Biosensors
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 9
Issue 1
Article Number 14
Keywords pH sensor; e-textile; potentiometric; graphite; wearable system
Public URL


You might also like

Downloadable Citations