20.500.12556/RUL-171233 Durable nonfluorinated stochastically hierarchical superhydrophobic interface for intense long-term phase change cooling Advanced superhydrophobic interfaces, where strong water repellency is imparted on top of micro- and nanoengineered surface features, have demonstrated enhanced boiling heat transfer with the potential to drastically improve the efficiency of thermal management. However, their practical deployment is impeded by degradation of favorable characteristics, resulting from thermo-chemo-physical strain during prolonged bubble or vapor patch formation. Building on extensive past work where the leading degradation mechanisms of long-term pool boiling were analyzed, a novel six-step surface engineering procedure is developed in this work to effectively mitigate boiling-induced degradation on superhydrophobic copper samples. Laser microengineering is coupled with a UV-ozone-activated gold nanolayer, upon which a fluorine-free monolayer is deposited to induce superhydrophobicity. The developed stochastically hierarchical interface repeatably demonstrates enhanced boiling heat transfer at low wall superheats with HTC improvements up to 460%, while its micromorphology and wetting remain intact even after several hundred hours of vigorous pool boiling. With practical implementation in mind, the interface is stress-tested at elevated temperatures and repeated CHF onsets, exhibiting unparalleled durability of wetting behavior and heat transfer stability. Through this work, it is sought to advance the practical application of superhydrophobicity, moving closer to realizing its full potential in advanced phase change cooling solutions. durability heat transfer hierarchical structures laser texturing long-termboiling phase change cooling superhydrophobicity odpornost prenos toplote hierarhične strukture lasersko teksturiranje dolgotrajno vrenje hlajenje s fazno spremembo superhidrofobnost true false true Angleški jezik Slovenski jezik Članek v reviji 2025-08-20 13:05:27 2025-08-20 13:05:36 2025-12-02 04:40:27 0000-00-00 00:00:00 2025 0 0 12 str. issue 11, art. 2500326 Vol. 6 Nov. 2025 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 536.24:544.722.132 2688-4062 10.1002/sstr.202500326 246074627 Berce_..._Durable_Nonfluorinated_....pdf Berce_..._Durable_Nonfluorinated_....pdf 1 8051251FAEB89248B20A38287FE2F207 82781db296a6e5dfcc7b9a54447a858df86cce70cc1adee318c86eabd3fda32b df052cb8-ce97-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=222774 https://onlinelibrary.wiley.com/doi/full/10.1002/sstr.202500326 1 8052bedd-7db5-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=214383 Fakulteta za strojništvo 0 0 0