20.500.12556/RUL-138760 Pool-boiling performance on thin metal foils with graphene-oxide-nanoflake deposit The pool-boiling performance of water on thin metal foils with graphene-oxide deposition was studied. The boiling performance was evaluated both on fully coated surfaces, achieved by spin-coating, and surfaces with a laser-textured nucleation site, into which graphene oxide was added via drop-casting. During the experiments, a high-speed IR camera was used to obtain the transient temperature and heat-flux distribution. At the same time, a high-speed video camera was used to acquire synchronized bubble-growth recordings. In addition, a surface-wettability analysis was conducted for all the samples. In the case of fully coated samples, graphene-oxide deposition resulted in an increased number of active nucleation sites and an increase in the nucleation temperature, leading to a lowered nucleation frequency. Meanwhile, samples with a single laser-textured nucleation site enabled the analysis of isolated vapor bubbles, confirming that graphene-oxide deposition leads to a higher nucleation temperature, consequently resulting in a larger bubble-departure diameter and longer growth time. Two explanations for the results are proposed: the wettability of graphene-oxide deposition and the filling of surface microcavities with graphene-oxide nanoflakes. graphene oxide nanocoating nucleate boiling local heat flux nucleation site density grafenov oksid nanopremazi mehurčkasto vrenje lokalna gostota toplotnega toka gostota aktivnih nukleacijskih mest true false true Angleški jezik Slovenski jezik Članek v reviji 2022-08-16 11:20:28 2022-08-16 11:20:35 2023-05-17 03:56:54 0000-00-00 00:00:00 2022 0 0 16 str. iss. 16, art. 2772 Vol. 12 Aug. 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66.02 2079-4991 10.3390/nano12162772 118246915 nanomaterials-12-02772-v2.pdf nanomaterials-12-02772-v2.pdf 1 B325B14D665329962141898BA5940A26 0bd21fdd6f4e6347ee7e92c6b70b0dc3629542cb0a510f6fa1dccf84a26a5117 0518e6ad-f3cf-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=168875 https://www.mdpi.com/2079-4991/12/16/2772 1 ae43d862-1d44-11ed-92af-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=159197 Fakulteta za strojništvo 0 0 0