From gas flow to colloidal diffusion: theoretical and experimental investigations of transport in nano- and microchannels, on the ground and in space

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dc.contributor.advisorNordlander, Peteren_US
dc.contributor.committeeMemberGrattoni, Alessandroen_US
dc.contributor.committeeMemberPimpinelli, Albertoen_US
dc.creatorScorrano, Giovannien_US
dc.date.accessioned2019-05-17T15:27:09Zen_US
dc.date.available2020-05-01T05:01:08Zen_US
dc.date.created2018-05en_US
dc.date.issued2018-04-19en_US
dc.date.submittedMay 2018en_US
dc.date.updated2019-05-17T15:27:09Zen_US
dc.description.abstractDeveloping predictive models for gas flow through micro- and nanochannels is of great interest in several scientific and technological fields. Existing theories reproduce specific scenarios failing to give solutions that can be applied on a broader spectrum. In this study, we propose a statistical method to predict the flow rate of rarefied gas through rectangular channels based on the distribution of free paths between inter-particle and gas-wall collisions. Our approach can be applied to virtually all geometries, for which the probability distribution of path lengths for gas-wall collisions can be computed, either analytically or by numerical simulations. Additionally, we present a study of nitrogen transport through a wide range of identical slit nanochannels where only the cross section height varies from 250 nm down to 2.5 nm achieving various degrees of gas confinement. The present theoretical model shows excellent agreement with the experimental results demonstrating the validity of our approach.en_US
dc.embargo.terms2020-05-01en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationScorrano, Giovanni. "From gas flow to colloidal diffusion: theoretical and experimental investigations of transport in nano- and microchannels, on the ground and in space." (2018) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/105778">https://hdl.handle.net/1911/105778</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/105778en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectRectangular nanochannelsen_US
dc.subjectgas diffusionen_US
dc.subjectmean free pathen_US
dc.subjectgas flowen_US
dc.subjectsilicon slit channelsen_US
dc.titleFrom gas flow to colloidal diffusion: theoretical and experimental investigations of transport in nano- and microchannels, on the ground and in spaceen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentApplied Physicsen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.majorApplied Physics/Mechanical Engen_US
thesis.degree.nameMaster of Scienceen_US
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