{"id":{"repo_id":"ohiolink","oai_identifier":"oai:etd.ohiolink.edu:ohiou1355943408"},"canonical_url":"https://search.dev.ndltd.org/etd/ohiolink/oai:etd.ohiolink.edu:ohiou1355943408","repository":{"repo_id":"ohiolink","name":"OhioLINK","base_url":"https://etd.ohiolink.edu/acprod/odb_etd/ws/oai/oai"},"display":{"title":"X-ray Scattering Study Of Capillary Condensation In Mesoporous Silica","abstract":"The capillary condensation deforms a nanoporous material due to the capillary force generated by the fluid inside the pores. In-situ small and wide angle x-ray scattering(S/WAXS) were used to study the deformation with respect to relative vapor pressure of the fluid. Periodic mesoporous silica such as MCM-41 and SBA-15 were synthesized and used as the samples with water as the capillary condensation agent.The gas sorption method and SAXS were used to extract the pore parameters of the samples.The stresses acting on the silica scaffold due to the presence of water in the pores were deduced by careful analysis of various forces acting on it. The Poisson's ratio and elastic moduli of the two samples and their annealed forms were estimated and compared quantitatively. Our study demonstrates a novel WAXS-based technique for calculating the mechanical properties of nanoporous materials with much wider applicability than the previously reported SAXS technique.","abstract_html":"The capillary condensation deforms a nanoporous material due to the capillary force generated by the fluid inside the pores. In-situ small and wide angle x-ray scattering(S/WAXS) were used to study the deformation with respect to relative vapor pressure of the fluid. Periodic mesoporous silica such as MCM-41 and SBA-15 were synthesized and used as the samples with water as the capillary condensation agent.The gas sorption method and SAXS were used to extract the pore parameters of the samples.The stresses acting on the silica scaffold due to the presence of water in the pores were deduced by careful analysis of various forces acting on it. The Poisson's ratio and elastic moduli of the two samples and their annealed forms were estimated and compared quantitatively. Our study demonstrates a novel WAXS-based technique for calculating the mechanical properties of nanoporous materials with much wider applicability than the previously reported SAXS technique.","abstract_has_math":false,"creators":["Sundararajan, Mayur"],"institution":"Ohio University","degree_name":"Master of Science (MS)","degree_level":"masters","degree_discipline":"Physics and Astronomy (Arts and Sciences)","degree_department":null,"school":null,"contributors":["Chen, Gang"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013-06-13","date_published":"2013-06-13","updated_at":"2026-07-24T03:36:08Z","subjects":["Physics","WAXS","mesoporous silica","MCM-41","SBA-15","Mechanical properties","Poisson's ratio","Capillary condensation"],"languages":["English"],"rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1355943408","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Chen, Gang"]},{"key":"dc:creator","label":"Author","values":["Sundararajan, Mayur"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2013-06-13"]},{"key":"dc:publisher","label":"Institution","values":["Ohio University / OhioLINK"]},{"key":"dc:type","label":"Dc Type","values":["Electronic Thesis or Dissertation"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics and Astronomy (Arts and Sciences)"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (MS)"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Ohio University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Physics","WAXS","mesoporous silica","MCM-41","SBA-15","Mechanical properties","Poisson's ratio","Capillary condensation"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:rights","label":"Dc Rights","values":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. 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Periodic mesoporous silica such as MCM-41 and SBA-15 were synthesized and used as the samples with water as the capillary condensation agent.The gas sorption method and SAXS were used to extract the pore parameters of the samples.The stresses acting on the silica scaffold due to the presence of water in the pores were deduced by careful analysis of various forces acting on it. The Poisson's ratio and elastic moduli of the two samples and their annealed forms were estimated and compared quantitatively. Our study demonstrates a novel WAXS-based technique for calculating the mechanical properties of nanoporous materials with much wider applicability than the previously reported SAXS technique."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf","p.100","3.22 MB"]},{"key":"dc:title","label":"Title","values":["X-ray Scattering Study Of Capillary Condensation In Mesoporous Silica"]}]}],"canonical_facts":{"dc:contributor":["Chen, Gang"],"dc:creator":["Sundararajan, Mayur"],"dc:date":["2013-06-13"],"dc:description":["The capillary condensation deforms a nanoporous material due to the capillary force generated by the fluid inside the pores. In-situ small and wide angle x-ray scattering(S/WAXS) were used to study the deformation with respect to relative vapor pressure of the fluid. Periodic mesoporous silica such as MCM-41 and SBA-15 were synthesized and used as the samples with water as the capillary condensation agent.The gas sorption method and SAXS were used to extract the pore parameters of the samples.The stresses acting on the silica scaffold due to the presence of water in the pores were deduced by careful analysis of various forces acting on it. The Poisson's ratio and elastic moduli of the two samples and their annealed forms were estimated and compared quantitatively. Our study demonstrates a novel WAXS-based technique for calculating the mechanical properties of nanoporous materials with much wider applicability than the previously reported SAXS technique."],"dc:format":["application/pdf","p.100","3.22 MB"],"dc:identifier":["http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1355943408"],"dc:language":["English"],"dc:publisher":["Ohio University / OhioLINK"],"dc:rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws."],"dc:subject":["Physics","WAXS","mesoporous silica","MCM-41","SBA-15","Mechanical properties","Poisson's ratio","Capillary condensation"],"dc:title":["X-ray Scattering Study Of Capillary Condensation In Mesoporous Silica"],"dc:type":["Electronic Thesis or Dissertation"],"thesis:degree_discipline":["Physics and Astronomy (Arts and Sciences)"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science (MS)"],"thesis:institution_name":["Ohio University"]},"updated_at":"2026-07-24T03:36:08Z"}