Title :
A novel gravure printed impedance based flexible electrochemical sensor
Author :
Narakathu, B.B. ; Reddy, S.G.A. ; Atashbar, M.Z. ; Rebrosova, E. ; Rebros, M. ; Joyce, M.K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Western Michigan Univ., Kalamazoo, MI, USA
Abstract :
A novel flexible electrochemical sensor was successfully gravure printed on a polyethylene terephthalate (PET) film with silver (Ag) electrodes using Ag nanoparticle based ink. The sensor consisted of a circular working electrode with diameter of 1700 μm and a counter electrode with outer and inner diameter of 3900 μm and 2900 μm, respectively. The capability of the fabricated sensor for detecting very low concentrations of toxic chemicals was demonstrated. The electrochemical impedance spectroscopy (EIS) response of the printed sensor revealed a very high sensitivity at pico molar (pM) concentration levels of mercury sulfide (HgS), lead sulfide (PbS), D-proline and sarcosine.
Keywords :
electrochemical electrodes; electrochemical impedance spectroscopy; electrochemical sensors; nanofabrication; nanoparticles; polymer films; silver; Ag; EIS; PET film; circular working electrode; counter electrode; electrochemical impedance spectroscopy; gravure printed impedance based flexible electrochemical sensor; nanoparticle based ink; pM concentration level; picomolar concentration level; polyethylene terephthalate film; size 1700 mum; size 2900 mum; size 3900 mum; toxic chemical concentration detection; Biosensors; Electrodes; Impedance; Ink; Printing; Substrates;
Conference_Titel :
Sensors, 2011 IEEE
Conference_Location :
Limerick
Print_ISBN :
978-1-4244-9290-9
DOI :
10.1109/ICSENS.2011.6127225
