Hollow core photonic crystal fibre as a viscosity and Raman sensor

dc.check.embargoformatNot applicableen
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dc.contributor.advisorGunning, Fatima C. Garciaen
dc.contributor.advisorRuth, Albert A.
dc.contributor.authorHoran, Laura E.
dc.contributor.funderIrish Research Council for Science Engineering and Technologyen
dc.date.accessioned2014-03-10T14:26:15Z
dc.date.available2014-03-10T14:26:15Z
dc.date.issued2013
dc.date.submitted2013
dc.description.abstractThis PhD thesis investigates the application of hollow core photonic crystal fibre for use as an optical fibre nano litre liquid sensor. The use of hollow core photonic crystal fibre for optical fibre sensing is influenced by the vast wealth of knowledge, and years of research that has been conducted for optical waveguides. Hollow core photonic crystal fibres have the potential for use as a simple, rapid and continuous sensor for a wide range of applications. In this thesis, the velocity of a liquid flowing through the core of the fibre (driven by capillary forces) is used for the determination of the viscosity of a liquid. The structure of the hollow core photonic crystal fibre is harnessed to collect Raman scatter from the sample liquid. These two methods are integrated to investigate the range of applications the hollow core photonic crystal fibre can be utilised for as an optical liquid sensor. Understanding the guidance properties of hollow core photonic crystal fibre is forefront in dynamically monitoring the liquid filling. When liquid is inserted fully or selectively to the capillaries, the propagation properties change from photonic bandgap guidance when empty, to index guidance when the core only is filled and finally to a shifted photonic bandgap effect, when the capillaries are fully filled. The alterations to the guidance are exploited for all viscosity and Raman scattering measurements. The concept of the optical fibre viscosity sensor was tested for a wide range of samples, from aqueous solutions of propan-1-ol to solutions of mono-saccharides in phosphate buffer saline. The samples chosen to test the concept were selected after careful consideration of the importance of the liquid in medical and industrial applications. The Raman scattering of a wide range of biological important fluids, such as creatinine, glucose and lactate were investigated, some for the first time with hollow core photonic crystal fibre.en
dc.description.statusPeer revieweden
dc.description.versionAccepted Version
dc.format.mimetypeapplication/pdfen
dc.identifier.citationHoran, L. E. 2013. Hollow core photonic crystal fibre as a viscosity and Raman sensor. PhD Thesis, University College Cork.en
dc.identifier.endpage178en
dc.identifier.urihttps://hdl.handle.net/10468/1438
dc.language.isoenen
dc.publisherUniversity College Corken
dc.rights© 2013, Laura E. Horan.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/en
dc.subjectHollow core photonic crystal fibreen
dc.subjectOptical liquid sensoren
dc.subject.lcshOptical fiber communicationen
dc.subject.lcshOptical wave guidesen
dc.thesis.opt-outfalse
dc.titleHollow core photonic crystal fibre as a viscosity and Raman sensoren
dc.typeDoctoral thesisen
dc.type.qualificationlevelDoctoralen
dc.type.qualificationnamePhD (Science)en
ucc.workflow.supervisorfatima.gunning@tyndall.ie
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