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dc.contributor.advisorLydia Bourouiba.en_US
dc.contributor.authorMontgomery, John Willard,IIIen_US
dc.contributor.otherMassachusetts Institute of Technology. Department of Mechanical Engineering.en_US
dc.date.accessioned2020-09-03T17:47:58Z
dc.date.available2020-09-03T17:47:58Z
dc.date.copyright2020en_US
dc.date.issued2020en_US
dc.identifier.urihttps://hdl.handle.net/1721.1/127123
dc.descriptionThesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, May, 2020en_US
dc.descriptionCataloged from the official PDF of thesis.en_US
dc.descriptionIncludes bibliographical references (pages 53-56).en_US
dc.description.abstractBubbles and films play a pivotal role in the dispersion of pathogens. Intrusions in thin films directly affect the final spray size and concentration of droplets. In this study, we seek to develop a method that can inform the direct observation of contaminants interacting with the film in which they are trapped. We develop an apparatus to directly observe microscale interactions within films from a macroscopic perspective. We penetrate soap films with rods (d rod >> h film) to investigate which properties affect the size of the optical spot created by the intrusion into the soap film. The experimental design is careful to account for parameters that could confound results by ensuring consistent environmental parameters, precise positioning of the object, and accounting for thickness of the film over time. We use high levels of pure surfactant to generate films that can sustain themselves despite being punctured by large objects. Using this approach, we are able to validate and extend the results found by Su and Bourouiba [30] by showing that the Schlieren spot size produced by large objects is not affected by size or wetting properties of the object. The spot size in soap films is primarily affected by the film thickness, consistent with prior results on water films (without surfactant).en_US
dc.description.statementofresponsibilityby John Willard Montgomery, III.en_US
dc.format.extent56 pagesen_US
dc.language.isoengen_US
dc.publisherMassachusetts Institute of Technologyen_US
dc.rightsMIT theses may be protected by copyright. Please reuse MIT thesis content according to the MIT Libraries Permissions Policy, which is available through the URL provided.en_US
dc.rights.urihttp://dspace.mit.edu/handle/1721.1/7582en_US
dc.subjectMechanical Engineering.en_US
dc.titleCalibrating Schlieren imaging for understanding local film deformation for a range of wetting and intrusions in soap filmsen_US
dc.typeThesisen_US
dc.description.degreeS.M.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Mechanical Engineeringen_US
dc.identifier.oclc1191837055en_US
dc.description.collectionS.M. Massachusetts Institute of Technology, Department of Mechanical Engineeringen_US
dspace.imported2020-09-03T17:47:58Zen_US
mit.thesis.degreeMasteren_US
mit.thesis.departmentMechEen_US


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