Development of a novel printed flexible microfluidic sensing platform based on PCB technology

Author

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

Author_Institution

Dept. of Electr. & Comput. Eng., Western Michigan Univ., Kalamazoo, MI, USA

fYear

2014

fDate

2-5 Nov. 2014

Firstpage

665

Lastpage

668

Abstract

A novel printed microfluidic sensing platform (MSP) has been successfully developed for the detection of bio/chemicals. Interdigitated electrodes (IDE) were fabricated by inkjet printing silver (Ag) based ink on flexible polyethylene terephthalate (PET) substrate. For the first time, printed circuit board (PCB) technology was used to create master molds for polydimethylsiloxane (PDMS) based microfluidic channels. The printed PET substrate and PDMS microfluidic channels were bonded to form the MSP. The capability of the fabricated MSP for detecting very low concentrations of bio/chemicals was demonstrated. The electrical impedance spectroscopy (EIS) based response of the system revealed picomolar detection levels as well as the feasibility of integrating conventional PCB and printing technology to create flexible MSPs for various bio/chemical sensing applications. The response of the developed MSP is analyzed and presented in this paper.

Keywords

biosensors; chemical sensors; chemical variables measurement; electrodes; microchannel flow; microfabrication; microsensors; polymers; printed circuits; EIS; IDE; MSP; PCB technology; PDMS; biochemical detection; electrical impedance spectroscopy; flexible polyethylene terephthalate substrate; inkjet printing silver based ink; interdigitated electrode; microfluidic channel; picomolar detection; polydimethylsiloxane; printed PET substrate; printed circuit board technology; printed flexible microfluidic sensing platform; Chemicals; Impedance; Microfluidics; Positron emission tomography; Printing; Sensors; Substrates;

fLanguage

English

Publisher

ieee

Conference_Titel

SENSORS, 2014 IEEE

Conference_Location

Valencia

Type

conf

DOI

10.1109/ICSENS.2014.6985086

Filename

6985086