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Hybrid Microfluidic Sensors Fabricated by Screen Printing and Injection Molding for Electrochemical and Electrochemiluminescence Detection
Author(s) -
Redha Zainab Mohammed,
Baldock Sara. J.,
Fielden Peter R.,
Goddard Nick J.,
Brown Bernard J. Treves,
Haggett Barry G. D.,
Andres Roberto,
Birch Brian J.
Publication year - 2009
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200804415
Subject(s) - electrochemiluminescence , chronoamperometry , materials science , screen printing , cyclic voltammetry , molding (decorative) , electrode , microfluidics , electrochemical cell , working electrode , fabrication , optoelectronics , nanotechnology , electrochemistry , composite material , chemistry , alternative medicine , pathology , medicine
An integrated microfluidic/electrochemical sensor with a dual working electrode configuration was fabricated for voltammetric and electrochemiluminescence (ECL) applications. The fabrication method integrates the two techniques of injection molding and screen printing for the first time. Injection molding is used to fabricate the flow cell with integrated electrical and fluidic connectors. Screen printing was used to print the electrodes directly onto the injection molded base plate. An over molding procedure followed by ultrasonic welding was used to form the complete sensor. The electrochemical and ECL performance of the sensors was assessed by applying different electrochemical methods such as cyclic voltammetry (CV), anodic stripping voltammetry (ASV) and chronoamperometry. The attractive analytical performance demonstrates good capability of the disposable sensors for routine on‐line electrochemical and ECL measurements.