Date of Award

12-2009

Degree Name

Master of Science in Engineering

Department

Electrical and Computer Engineering

First Advisor

Dr. Massood Zandi Atashbar

Second Advisor

Dr. Ikhlas Abdel-Qader

Third Advisor

Dr. Bruce Bejcek

Access Setting

Masters Thesis-Campus Only

Abstract

Sensors provide a link between the digital world of computers, modern communications systems and the "real" or analogue world in which we live in, making it possible for us to obtain real time information about our surroundings, especially in inaccessible and inhospitable environments.

An impedance based electro-chemical biosensor was developed for detection of various biological products using glass as substrate material and gold interdigitated electrodes along with a flow cell, with an inlet and outlet valve for the micro fluidic chamber. In present-day biotechnological applications, the analysis of biological products is of utmost importance. The complexity of interfacing a biological environment directly to an electronic device needs to be overcome as smaller and faster devices are highly desired for replacing time-consuming laboratory-analyses. The attractive properties of the electrochemical biosensors such as high sensitivity and high selectivity with low detection limits are extremely promising for biological sensing applications. The response of the biosensor system is analyzed, studied and is presented together with some of the challenges faced.

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