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Referenceless pH Sensor using Organic Electrochemical Transistors
Author(s) -
Scheiblin Gaëtan,
Coppard Romain,
Owens Róisín M.,
Mailley Pascal,
Malliaras George G.
Publication year - 2017
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201600141
Subject(s) - computer science , bridge (graph theory) , transistor , electrode , service (business) , electrochemistry , nanotechnology , materials science , electrical engineering , chemistry , engineering , medicine , voltage , economy , economics
Using printing techniques, organic electrochemical transistors are integrated in a differential bridge . This circuit allows biochemical sensing without the use of a reference electrode. Electrodeposited iridium oxide gate electrodes enable pH measurements with increased sensitivity, also demonstrated in complex biological media such as human sweat.