{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/127172"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/127172","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Fundamental study of durability in thin hydrophobic films for dropwise condensation","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms","abstract_has_math":false,"creators":["Zarin, Ishrat"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Miljkovic, Nenad","Miljkovic , Nenad","Jacobi, Anthony","Ferreira, Placid","Evans , Christopher"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2024,"date_issued":"2024-11-11","date_published":"2024-11-11","updated_at":"2026-07-22T22:25:03Z","subjects":["Hydrophobic","Durability"],"languages":["en","eng"],"rights":["Copyright 2024 Ishrat Zarin"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/127172","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Miljkovic, Nenad","Miljkovic , Nenad","Jacobi, Anthony","Ferreira, Placid","Evans , Christopher"]},{"key":"dc:creator","label":"Author","values":["Zarin, Ishrat"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2024-11-11","2024-12"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"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","Durability"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2024 Ishrat Zarin"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/127172"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms","The student, Ishrat Zarin, accepted the attached license on 2024-10-29 at 23:08.","The student, Ishrat Zarin, submitted this Dissertation for approval on 2024-11-03 at 20:28.","This Dissertation was approved for publication on 2024-11-11 at 10:39.","DSpace SAF Submission Ingestion Package generated from Vireo submission #21281 on 2025-03-28 at 14:25:21","Enhancement in condensation heat transfer has the potential to increase the energy efficiency of steam power plants by 2% signifying its importance in global energy landscape and environment. Dropwise condensation on thin hydrophobic films where discreet droplets form from steam condensation has the prospective to achieve excellent heat transfer due to continuous shedding of water droplets. However, these thin films (~100 nm) are not durable for continuous dropwise condensation. Understanding the fundamental properties of these thin films is imperative to gaining insight into durability. One of the major properties that define the interface of the coating during steam condensation is interaction of the solid surface with the liquid or water. First, we begin by investigating the interfacial surface energy of thin films with respect to various liquids using a direct meniscus method. The results show our method is as accurate as contact angle method, and high surface energy materials can also be studied giving it an edge over other methods. Then we develop two distinct diagnostic tests for durability :1) Using electrodeposition to visualize pinhole defects and directly compare the density over chosen films, and 2) Using mass transfer process through thin film coatings as a proxy to durability testing in an actual condensation setting. Both these tests are capable of dictating durability within a shorter amount of time compared with current year-long durability tests. Finally, we investigate Dynamic PDMS a class of self-healing vitrimer material as a prospective durable hydrophobic coating for dropwise condensation. Using Atomic Force Microscopy (AFM) we elucidate the mechanism of scratch healing in such self-healing materials. The techniques and insights presented here will inform future works on thin polymeric materials and enable their durable design for plethora of applications including dropwise condensation of steam."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Fundamental study of durability in thin hydrophobic films for dropwise condensation"]}]}],"canonical_facts":{"dc:contributor":["Miljkovic, Nenad","Miljkovic , Nenad","Jacobi, Anthony","Ferreira, Placid","Evans , Christopher"],"dc:creator":["Zarin, Ishrat"],"dc:date":["2024-11-11","2024-12"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms","The student, Ishrat Zarin, accepted the attached license on 2024-10-29 at 23:08.","The student, Ishrat Zarin, submitted this Dissertation for approval on 2024-11-03 at 20:28.","This Dissertation was approved for publication on 2024-11-11 at 10:39.","DSpace SAF Submission Ingestion Package generated from Vireo submission #21281 on 2025-03-28 at 14:25:21","Enhancement in condensation heat transfer has the potential to increase the energy efficiency of steam power plants by 2% signifying its importance in global energy landscape and environment. Dropwise condensation on thin hydrophobic films where discreet droplets form from steam condensation has the prospective to achieve excellent heat transfer due to continuous shedding of water droplets. However, these thin films (~100 nm) are not durable for continuous dropwise condensation. Understanding the fundamental properties of these thin films is imperative to gaining insight into durability. One of the major properties that define the interface of the coating during steam condensation is interaction of the solid surface with the liquid or water. First, we begin by investigating the interfacial surface energy of thin films with respect to various liquids using a direct meniscus method. The results show our method is as accurate as contact angle method, and high surface energy materials can also be studied giving it an edge over other methods. Then we develop two distinct diagnostic tests for durability :1) Using electrodeposition to visualize pinhole defects and directly compare the density over chosen films, and 2) Using mass transfer process through thin film coatings as a proxy to durability testing in an actual condensation setting. Both these tests are capable of dictating durability within a shorter amount of time compared with current year-long durability tests. Finally, we investigate Dynamic PDMS a class of self-healing vitrimer material as a prospective durable hydrophobic coating for dropwise condensation. Using Atomic Force Microscopy (AFM) we elucidate the mechanism of scratch healing in such self-healing materials. The techniques and insights presented here will inform future works on thin polymeric materials and enable their durable design for plethora of applications including dropwise condensation of steam."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/127172"],"dc:language":["en","eng"],"dc:rights":["Copyright 2024 Ishrat Zarin"],"dc:subject":["Hydrophobic","Durability"],"dc:title":["Fundamental study of durability in thin hydrophobic films for dropwise condensation"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:03Z"}