P2EC.19 - Development of a Gravure Printed Flexible Electrochemical Sensor
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
- P-2 - Electrochemical Sensors
- D. Maddipatla, B. Narakathu, V. Turkani, B. Bazuin, M. Atashbar - Department of Electrical and Computer Engineering, Western Michigan University, Kalamazoo, Michigan (USA)
- 734 - 735
A flexible electrochemical sensor was successfully fabricated using additive gravure printing process for the detection of biochemicals. The sensor, with a circular electrode configuration, was printed on a flexible polyethylene terephthalate (PET) substrate using silver nano-particle (Ag-NP) ink. The capability of the electrochemical sensor was investigated by performing electrical impedance spectroscopy (EIS) measurements towards different concentrations of potassium chloride (KCl) solution, at 20 Hz operating frequency and 100 mV excitation voltage. It was observed that the impedance decreased from 1329 kΩ to 207 kΩ to 183 kΩ to 68 kΩ to 1.2 kΩ as the concentration of the KCl solution increased from DI to 100 pM to 100 nM to 100 μM to 100 mM, respectively, thus demonstrating picomolar (pM) concentration detection capability of the printed sensor.