Dissociation of molecules on silicon surfaces studied by scanning tunneling microscopy

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dc.contributor.authorMaraghechi, Pouya
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorPatitsas, Steve
dc.date.accessioned2008-04-03T21:53:43Z
dc.date.available2008-04-03T21:53:43Z
dc.date.issued2007
dc.degree.levelMasters
dc.descriptionxviii, 175 leaves : ill. (some col.) ; 29 cmen
dc.description.abstractDissociation of trichloroethylene (TCE) molecules on the Si(111)-7x7 and the Si(100)-2x1 surfaces was studied using STM. Though molecular adsorption may also be observed on the Si(111)-7x7 surface, dissociation is the dominant process. From the STM images acquired, products of dissociation were identified, namely chlorine atoms and dichlorovinyl groups. Dissociation of chlorine from the TCE molecule was confirmed by studying not just appearance in STM images but also from studies of tip-induced diffusion. Different binding configurations were proposed for the vinyl group on the Si (111)-7x7 and the Si(100)-2x1 surfaces. Site preference for each product of dissociation is reported on the Si(111)-7x7 surface. Dissociation of molecules such as ammonia, dimethylamine and methyl chloride on the Si(111)-7x7 and Si(100)-2x1 surfaces is reviewed. The field emission process is explained in detail. The usefulness of making field emission measurements is in evaluating the sharpness of STM tips.en
dc.identifier.urihttps://hdl.handle.net/10133/634
dc.language.isoen_USen
dc.publisherLethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2007en
dc.publisher.departmentDepartment of Physicsen
dc.publisher.facultyFaculty of Arts and Scienceen
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en
dc.subjectDissociationen
dc.subjectScanning tunneling microscopyen
dc.subjectSilicon -- Surfacesen
dc.subjectSurfaces (Physics) -- Researchen
dc.subjectTrichloroethylene -- Adsorption and absorptionen
dc.subjectDissertations, Academicen
dc.titleDissociation of molecules on silicon surfaces studied by scanning tunneling microscopyen
dc.typeThesisen
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