University of Sydney researchers have observed oil molecules retaining their 'liquid-like' properties when they are chemically attached as an extremely thin layer to solid surfaces, opening new possibilities for designing sustainable materials with non-stick characteristics.
, led by Dr. Isaac Gresham with co-authors Professor Chiara Neto and honors student Seamus Lilley from the School of Chemistry and Sydney Nano, Dr. Kaloian Koynov from the Max Planck Institute for Polymer Research and Dr. Andrew Nelson from the Australian Center for Neutron Scattering.
The 'liquid-like' coatings the team studied, known as slippery covalently-attached liquid surfaces , are produced from silicones orSCALS are anti-adhesive without relying on problematic perfluorinated polymers , known as 'forever chemicals' that are usually used for their low adhesion properties.
"We can correlate the exceptional performance of these layers with their nanostructure—meaning we now know what we're aiming for when we design slippery surfaces, enabling us to make them even more effective and provide viable alternatives to fluorinated coatings." The slippery nano-thin layers, between two and five billionths of a meter thick or 10,000 times thinner than a human hair, are made up of"A water droplet glides with no friction over a thick oil film, but if you completely remove the oil film, say by using soap, most
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