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Publication Date
Fall 2021
Degree Type
Thesis - Campus Access Only
Degree Name
Master of Science (MS)
Department
Chemical and Materials Engineering
Advisor
Liat Rosenfeld
Subject Areas
Chemical engineering
Abstract
A microfluidic device was developed for rapid and high sensitivity detection of pathogens inwater samples. By leveraging strong preconcentration of isotachophoresis (ITP) and controlled sample flow in microfluidic channels to create a stationary and locally concentrated zone of fluorescently labeled aptamer probes within a microchannel. Two assay solutions were developed for anionic ITP where one contained E. coli DH5⍺ cells and the other contained aptamer AM-6. Counterflow ITP was achieved by incorporating a positive displacement pump into the device. The fabricated device is the first demonstration of performing stationary ITP in a poly(dimethylsiloxane) microchannel device, rendering high flexibility in the dimensions. We leverage syringe-pump controlled pressure driven flow and parallel channels aiming to achieve monitoring of large sample volumes in the order of mili-liter.
Recommended Citation
Klar, Gurpreet, "Proof of Concept: Development of a Microfluidic Approach for Rapid and Continous Detection of Pathogens in Water Samples" (2021). Master's Theses. 5232.
DOI: https://doi.org/10.31979/etd.2trm-mryk
https://scholarworks.sjsu.edu/etd_theses/5232