Nanoporous Microcantilevers with Plasmonic Absorbers for Photothermal Infrared Spectroscopy

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dc.contributor.advisorKim, Seonghwan
dc.contributor.authorSimin, Nicholas
dc.contributor.committeememberKim, Seonghwan
dc.contributor.committeememberDalton, Colin
dc.contributor.committeememberSanati-Nezhad, Amir
dc.contributor.committeememberPark, Simon S.
dc.date2019-11
dc.date.accessioned2019-05-14T20:48:24Z
dc.date.available2019-05-14T20:48:24Z
dc.date.issued2019-05-13
dc.description.abstractA nanoporous anodic aluminum oxide (AAO) bimetallic cantilever enhanced by a gold coating on the nanopores creates a plasmonic crystal structure. The fabricated sensor is used for photothermal cantilever deflection spectroscopy (PCDS). Explosive compounds tested, showed spectra identifying explosive compounds by their characteristic wavelengths. Through a two-step anodization process, photolithography, and bimetallic and plasmonic coatings, a sensitive photothermal microcantilever was fabricated. The bimetallic layer thickness was optimized through analytical calculations. The ideal plasmonic layer thickness was found through experimentation. Molecules adsorbed onto the cantilever surface had their mass quantified through a measured change in 2nd mode resonant frequency. Simultaneously, the molecules were identified by high power infrared (IR) spectroscopy. For standoff spectroscopy, a plasmonic enhanced AAO cantilever was shown to improve characteristic peak depth 10-fold and 7-fold compared to silicon and AAO bimetallic cantilevers, respectively. The limit of detection (LOD) of the plasmonic AAO cantilever was determined to be 63.42 ng/cm2.en_US
dc.identifier.citationSimin, N. (2019). Nanoporous Microcantilevers with Plasmonic Absorbers for Photothermal Infrared Spectroscopy (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/36515
dc.identifier.urihttp://hdl.handle.net/1880/110343
dc.language.isoengen_US
dc.publisher.facultySchulich School of Engineeringen_US
dc.publisher.institutionUniversity of Calgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.en_US
dc.subjectNanoporousen_US
dc.subjectAAOen_US
dc.subjectPlasmonicsen_US
dc.subjectPCDSen_US
dc.subjectExplosivesen_US
dc.subjectStandoff Spectroscopyen_US
dc.subject.classificationPhysics--Molecularen_US
dc.subject.classificationOpticsen_US
dc.subject.classificationEngineering--Chemicalen_US
dc.subject.classificationMaterials Scienceen_US
dc.subject.classificationEngineering--Mechanicalen_US
dc.titleNanoporous Microcantilevers with Plasmonic Absorbers for Photothermal Infrared Spectroscopyen_US
dc.typemaster thesisen_US
thesis.degree.disciplineEngineering – Mechanical & Manufacturingen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameMaster of Science (MSc)en_US
ucalgary.item.requestcopytrue
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