{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/45573"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/45573","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Droplet repellency of microfabricated surfaces in saturated environments","abstract":"This thesis reports changes in apparent contact angles for droplets of various liquids on microstructured surfaces in saturated environments. Micro scale pillar surfaces maintain the non-wetting Cassie-Baxter regime for drops of water over a range of saturation temperatures while micro scale waffles transition into a partially wetted state under the same conditions. Micro scale mushroom and waffle surfaces are able to maintain oleophobic behavior for droplets in a saturated environment with a concentration of up to 50% R-134a. The surfaces described in this thesis could be used to significantly improve devices that rely upon a liquid-vapor interface, including two-phase heat exchangers, water purification systems, and microfluidic devices.","abstract_html":"This thesis reports changes in apparent contact angles for droplets of various liquids on microstructured surfaces in saturated environments. Micro scale pillar surfaces maintain the non-wetting Cassie-Baxter regime for drops of water over a range of saturation temperatures while micro scale waffles transition into a partially wetted state under the same conditions. Micro scale mushroom and waffle surfaces are able to maintain oleophobic behavior for droplets in a saturated environment with a concentration of up to 50% R-134a. The surfaces described in this thesis could be used to significantly improve devices that rely upon a liquid-vapor interface, including two-phase heat exchangers, water purification systems, and microfluidic devices.","abstract_has_math":false,"creators":["Torrealba, Eduardo"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["King, William P."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013-08-22T16:48:16Z","date_published":"2013-08-22T16:48:16Z","updated_at":"2026-07-22T22:25:36Z","subjects":["hydrophobic","omniphobic"],"languages":["en"],"rights":["Copyright 2013 Eduardo Torrealba"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/45573","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["King, William P."]},{"key":"dc:creator","label":"Author","values":["Torrealba, Eduardo"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2013-08-22T16:48:16Z","2015-08-22T10:00:25Z","2013-08"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["hydrophobic","omniphobic"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2013 Eduardo Torrealba"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/45573"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This thesis reports changes in apparent contact angles for droplets of various liquids on microstructured surfaces in saturated environments. 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