Development of a Microfluidic Sensing Platform by Integrating PCB Technology and Inkjet Printing Process

Author

Narakathu, Binu Baby ; Avuthu, Sai Guruva Reddy ; Eshkeiti, Ali ; Emamian, Sepehr ; Atashbar, Massood Zandi

Author_Institution

Department of Electrical and Computer Engineering, Western Michigan University, Kalamazoo, MI, USA

Volume

15

Issue

11

fYear

2015

Firstpage

6374

Lastpage

6380

Abstract

A microfluidic sensing platform (MSP) for the detection of bio/chemicals has been successfully developed. Polydimethylsiloxane (PDMS)-based microfluidic channels were fabricated using master molds created with printed circuit board (PCB) technology. Silver (Ag)-based ink was employed to inkjet print interdigitated electrodes on flexible polyethylene terephthalate (PET) substrate. The printed PET substrate and PDMS were bonded to form the MSP. The capability of the fabricated MSP for detecting very low concentrations of heavy metal compounds was investigated. The electrochemical impedance spectroscopy response of the MSP revealed picomolar concentration levels of detection for mercury sulfide and cadmium sulfide. The results obtained demonstrated the feasibility of integrating conventional PCB and printing technology to create flexible MSPs for heavy metal sensing applications.

Keywords

Electrodes; Fluids; Impedance; Metals; Microfluidics; Printing; Sensors; Inkjet printing; Microfluidic sensing platform (MSP); Printed circuit board (PCB); inkjet printing; interdigitated electrodes (IDE); polydimethylsiloxane (PDMS); printed circuit board (PCB);

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2015.2457239

Filename

7158989