An Optical MEMS Sensor for On-chip Catechol Detection

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dc.contributor.advisorGhodssi, Rezaen_US
dc.contributor.authorDykstra, Peter Humeen_US
dc.contributor.departmentElectrical Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2009-01-24T07:32:41Z
dc.date.available2009-01-24T07:32:41Z
dc.date.issued2008-12-08en_US
dc.description.abstractThis thesis reports the successful design, fabrication and testing of an optical MEMS sensor for the detection of the toxic phenol, catechol. Catechol's presence in food and drinking water posses a health concern due to its harmful effects on cell respiration. By-products of catechol oxidation have demonstrated increased absorbance changes in a chitosan film in the UV and near UV range. Our reported sensor utilizes patterned SU-8 waveguides and a microfluidic channel to deliver catechol samples to an electrodeposited chitosan film for absorbance measurements at 472 nm. Concentrations as low as 1 mM catechol are detected while control experiments including ascorbic acid display no measurable response. By using optical detection methods, our device does not suffer from many of the problems which plague conventional electrochemical based sensors.en_US
dc.format.extent8217124 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/8927
dc.language.isoen_US
dc.subject.pqcontrolledEngineering, Electronics and Electricalen_US
dc.subject.pqcontrolledEngineering, Biomedicalen_US
dc.subject.pqcontrolledPhysics, Opticsen_US
dc.subject.pquncontrolledCatecholen_US
dc.subject.pquncontrolledChitosanen_US
dc.subject.pquncontrolledMicrofluidic deviceen_US
dc.subject.pquncontrolledPolymer waveguidesen_US
dc.titleAn Optical MEMS Sensor for On-chip Catechol Detectionen_US
dc.typeThesisen_US

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