Coating changes from solid to liquid to keep ice at bay скачать в хорошем качестве

Coating changes from solid to liquid to keep ice at bay

Researchers made a frost-delaying surface by harnessing the physics that control how water condenses and freezes on a surface. ↓↓More info and references below↓↓ Ice accumulation on airplane wings and wind turbine blades can interfere with performance and be costly and time consuming to remove. Many strategies exist to keep these surfaces ice-free, including superslippery coatings that prevent ice from sticking. Now, researchers at the University of Illinois at Chicago and ESPCI Paris report a new strategy: a material that harnesses the simple physics of a water droplet’s condensation to keep ice from forming for as long as 96 h at frigid temperatures. Dimethyl sulfoxide (DMSO) is a chemical with a melting point higher than the freezing point of water. As water droplets condense onto a frigid, DMSO-coated surface, they release heat, causing the DMSO to melt and form a thin layer of liquid underneath and around the water droplet. Illinois team member Rukmava Chatterjee says he thinks this delays freezing because the liquid DMSO traps heat around the droplet, and it’s hard for ice to form on the smooth surface with nothing to latch onto and nucleate around. Read more: Delaying Ice and Frost Formation Using Phase‐Switching Liquids | Advanced Materials https://onlinelibrary.wiley.com/doi/1... Strategies To Prevent Ice Accumulation On Metal Surfaces | C&EN https://cen.acs.org/articles/90/i30/S... Slippery Coating Keeps Metals Frost-Free | C&EN https://cen.acs.org/articles/90/web/2... Airplane Coatings Help Recoup Fuel Efficiency Lost To Bug Splatter | C&EN https://cen.acs.org/articles/93/i26/A... Watch C&EN’s video about U of M’s work to develop ice-shedding surfaces at    • How researchers make ice-shedding polymers...  ] Aircraft deicing footage by Amsterdam Airport Schiphol is licensed under CC-BY    • De-icing: how aircraft are kept free of ice   Wind turbine footage by XM2 Industrial is licensed under CC-BY    • Видео   Icy power lines footage by Manitoba Hydro is used with permission    • Manitoba Hydro de-icing techniques   Music: “Electro Cabello” by Kevin MacLeod is licensed under CC BY 3.0 This video is a production of Chemical & Engineering News (C&EN), the weekly newsmagazine of the American Chemical Society. Contact us at cen_multimedia@acs.org!