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Miniature gas sensing device based on near-infrared spectroscopy

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dc.contributor.authorAlfeeli, Bassamen
dc.contributor.committeechairWang, Anboen
dc.contributor.committeememberSafaai-Jazi, Ahmaden
dc.contributor.committeememberPickrell, Gary R.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2014-03-14T20:48:45Zen
dc.date.adate2005-12-06en
dc.date.available2014-03-14T20:48:45Zen
dc.date.issued2005-12-01en
dc.date.rdate2005-12-06en
dc.date.sdate2005-12-02en
dc.description.abstractThe identification and quantification of atoms, molecules, or ions concentrations in gaseous samples are in great demand for medical, environmental, industrial, law enforcement and national security applications. These applications require in situ, high-resolution, non-destructive, sensitive, miniature, inexpensive, rapid detection, remotely accessed, real time and continuously operating chemical sensing devices. The aim of this work is to design a miniature optical sensing device that is capable of detecting and measuring chemical species, compatible with being integrated into a large variety of monitoring systems, and durable enough to be used under extreme conditions. The miniature optical sensor has been realized by employing technologies from the optical communication industry and spectroscopic methods and techniques. Fused silica capillary tubing along with standard communication optical fibers have been utilized to make miniature gas sensor based on near-infrared spectroscopy for acetylene gas detection. In this work, the basic principles of infrared spectroscopy are reviewed. Also, the principle of operation, fabrication, testing, and analysis of the proposed sensor are discussed in details.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-12022005-074819en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12022005-074819/en
dc.identifier.urihttp://hdl.handle.net/10919/35911en
dc.publisherVirginia Techen
dc.relation.haspartThesis_etd2.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectfused silica capillary tubingen
dc.subjecthollow-core dielectric waveguidesen
dc.subjectchemical sensingen
dc.subjectacetyleneen
dc.subjectnear-IR spectroscopyen
dc.subjectthe Beer-Lambert lawen
dc.subjectmolecular motionen
dc.subjectoptical fiber sensorsen
dc.titleMiniature gas sensing device based on near-infrared spectroscopyen
dc.typeThesisen
thesis.degree.disciplineElectrical and Computer Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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