A Gravure Printed Flexible Electrochemical Sensor for the Detection of Heavy Metal Compounds

Proceedings

Narakathu, Binu¹  Maddipatla, Dinesh²  Turkani, Vikram³ 

[1] Author to whom correspondence should be addressed.;Department of Electrical and Computer Engineering, Western Michigan University, Kalamazoo, MI 49008, USA;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018

关键词: additive gravure printing process;    cadmium sulfide;    electrical impedance spectroscopy (EIS);    Electrochemical sensor;    flexible;    heavy metals;    PET substrate;    silver ink;   

DOI  :  10.3390/proceedings2130950

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

An electrochemical sensor was fabricated on a flexible polyethylene terephthalate (PET) substrate for the detection of cadmium sulfide (CdS), a heavy metal compound. The sensor consists of a working and reference electrode that were gravure printed using silver (Ag) ink on the PET substrate. The performance of the sensor was investigated by measuring electrical impedance spectroscopy (EIS) for varying concentrations of the CdS. From the EIS based response, an impedance change of 11 ± 1%, 23 ± 1%, 34 ± 2% and 50 ± 3% was observed for the 1 pM, 1 nM, 1 µM and 1 mM concentrations of CdS, respectively when compared to de-ionized (DI) water, thus demonstrating the potential of employing gravure printed electrochemical sensors for heavy metal detection applications.

【 授权许可】

CC BY