Zobrazeno 1 - 10
of 368
pro vyhledávání: '"Khellil SEFIANE"'
Autor:
Astrid Raynard, Anam Abbas, Steven Armstrong, Gary G. Wells, Glen McHale, Khellil Sefiane, Daniel Orejon
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract Controlling the dynamics of droplet evaporation is critical to numerous fundamental and industrial applications. The three main modes of evaporation so far reported on smooth surfaces are the constant contact radius (CCR), constant contact a
Externí odkaz:
https://doaj.org/article/fd5c7b46ed6a402b957e3e864087af36
Autor:
David Brutin, Khellil Sefiane
Coffee rings, paint drying, blood splatter are all examples of complex fluids drying. Understanding the phenomena of complex fluid drops with respect to drying is important for technology and a lot of research in academia and industry is poured into
Autor:
Haidong Wang, Daniel Orejon, Dongxing Song, Xing Zhang, Glen McHale, Hiroshi Takamatsu, Yasuyuki Takata, Khellil Sefiane
Publikováno v:
Communications Materials, Vol 3, Iss 1, Pp 1-9 (2022)
Superhydrophobic behavior of liquid droplets on a surface typically results from chemical and surface topography considerations. Here, contact angles approaching 180° are observed for condensation-induced droplets on suspended monolayer graphene.
Externí odkaz:
https://doaj.org/article/aa92e309051343b78f80d3e801f0661a
Publikováno v:
Chemical Engineering Journal Advances, Vol 10, Iss , Pp 100255- (2022)
Although droplet evaporation has been studied extensively, the focus is mostly limited to single spherical drops rather than elongated or multiple droplets, which is extensively encountered in a wide range of applications. The present study provides,
Externí odkaz:
https://doaj.org/article/7aa746841ccf409789bdb3704ca7b4ff
Autor:
Akam Aboubakri, Vahid Ebrahimpour Ahmadi, Suleyman Celik, Abdolali K. Sadaghiani, Khellil Sefiane, Ali Kosar
Publikováno v:
Frontiers in Mechanical Engineering, Vol 7 (2021)
Flow boiling is one of the most effective mechanisms in heat transfer thanks to the latent heat of vaporization. Surface modifications such as mixed-wettability have a considerable effect on the boiling heat transfer performance in terms of enhanceme
Externí odkaz:
https://doaj.org/article/065b074794104e079428d0ec12449cd3
Publikováno v:
Heat Transfer Engineering. :1-22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::383eacb0e8ffa31cc1f1d50c032e5704
https://doi.org/10.1080/01457632.2023.2191442
https://doi.org/10.1080/01457632.2023.2191442
Publikováno v:
Abbas, A, Wells, G, McHale, G, Sefiane, K & Orejon Mantecon, D 2023, ' Silicone Oil Grafted Low Hysteresis Water Repellent Surfaces ', ACS Applied Materials & Interfaces, vol. 15, no. 8, pp. 11281-11295 . https://doi.org/10.1021/acsami.2c20718
Wetting plays a major role in the close interactions between liquids and solid surfaces, which can be tailored by modifying the chemistry as well as the structures of the surface outermost layer. Several methodologies such as chemical vapor depositio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d40ccd0b8168a60a82a61ab15c3ea3eb
https://doi.org/10.1021/acsami.2c20718
https://doi.org/10.1021/acsami.2c20718
Publikováno v:
Colloids and Interfaces, Vol 5, Iss 4, p 43 (2021)
The drying of bio-fluid drops results in the formation of complex patterns, which are morphologically and topographically affected by environmental conditions including temperature. We examine the effect of substrate temperatures between 20 °C and 4
Externí odkaz:
https://doaj.org/article/26a32be4f8344273b9adbf4fdee14656
Autor:
Prashant Agrawal, Anthony Buchoux, Gary G. Wells, Rodrigo Ledesma-Aguilar, Anthony J. Walton, Jonathan G. Terry, Glen McHale, Khellil Sefiane, Adam A. Stokes
Publikováno v:
Agrawal, P, Buchoux, A, Wells, G, Ledesma Aguilar, R, Walton, A J, Terry, J G, McHale, G, Sefiane, K & Stokes, A A 2023, ' Transition boiling bubble powered micro-engine using a Leidenfrost bearing ', Applied Thermal Engineering, vol. 229, 120565 . https://doi.org/10.1016/j.applthermaleng.2023.120565
Overcoming friction while generating useful torque is a challenge for micro engines. Here we report the development of a microscale engine that utilizes transition boiling as a mode of propulsion and the Leidenfrost effect as a friction-less bearing.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d53536f813ec6d89d0972a71b3185f2
https://hdl.handle.net/20.500.11820/08ebb741-dd5d-4259-bab5-b6dbd57604ef
https://hdl.handle.net/20.500.11820/08ebb741-dd5d-4259-bab5-b6dbd57604ef
Publikováno v:
Widyatama, A, Venter, M, Orejon Mantecon, D & Sefiane, K 2023, ' Experimental Investigation of Bubble Dynamics and Flow Patterns during Flow Boiling in High Aspect Ratio Microchannels with the Effect of Flow Orientation ', International Journal of Thermal Sciences, vol. 189, 108238 . https://doi.org/10.1016/j.ijthermalsci.2023.108238
Multiphase flow and boiling phase-change within microchannels are of paramount importance to thermal management and electronics cooling, among others. The present experimental study investigated the bubble dynamics and flow patterns during flow boili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aba192e61c203eec99b8f9fc98d871b8
https://www.pure.ed.ac.uk/ws/files/327878554/THESCI_D_22_02098_R1.pdf
https://www.pure.ed.ac.uk/ws/files/327878554/THESCI_D_22_02098_R1.pdf