from the but-dirt-hides-the-scratches dept.
Not only can car washes be time-consuming and/or expensive, they are a short-term solution. Engineers at Nissan are using 'super-hydrophobic' and 'oleophobic' nanotechnology paint finish called Ultra-Ever Dry that can repel water and oils, as well as dirt, dust, mud and grit on the new Nissan Note. It works by creating a thin air shield above the surface that makes rain, road spray, frost, sleet and standing water roll off without tainting the surface at all. Nissan has no plans of making the special paint standard on factory models but will consider offering the self-cleaning paint as an aftermarket option. Nissan will now determine if the material is durable for long-term use on vehicles and for the different weather conditions around the globe. Nissan has plans to test the technology this summer in Europe, using researchers based in its England technical facility using a Versa Note for testing.
How many times do you roll that dripping, glistening car out of the car wash parking lot only to hit a muddy puddle or rainstorm within the first day or two?
A University of Michigan researcher has created a coating that could be used to repel water, oil, and other substances:
In an advance that could grime-proof phone screens, countertops, camera lenses and countless other everyday items, a materials science researcher at the University of Michigan has demonstrated a smooth, durable, clear coating that swiftly sheds water, oils, alcohols and, yes, peanut butter.
Called "omniphobic" in materials science parlance, the new coating repels just about every known liquid. It's the latest in a series of breakthrough coatings from the lab of Anish Tuteja, U-M associate professor of materials science and engineering. The team's earlier efforts produced durable coatings that repelled ice and water, and a more fragile omniphobic coating. The new omniphobic coating is the first that's durable and clear. Easily applied to virtually any surface, it's detailed in a paper published in ACS Applied Materials & Interfaces.
Tuteja envisions the new coating as a way to prevent surfaces from getting grimy, both in home and industry. It could work on computer displays, tables, floors and walls, for example.
[...] Ultimately, the team discovered that a mix of fluorinated polyurethane and a specialized fluid-repellent molecule called F-POSS would do the job. Their recipe forms a mixture that can be sprayed, brushed, dipped or spin-coated onto a wide variety of surfaces, where it binds tightly. While the surface can be scratched by a sharp object, it's durable in everyday use. And its extremely precise level of phase separation makes it optically clear.
Just what I needed for my keyboard, VR headset, countertop, toilet bowl, 1 gallon mayonnaise jar, t-shirts, patio deck, sailing ship, the inside of all of my body's cells, and synthetic killer bacteria.
Smooth, All-Solid, Low-Hysteresis, Omniphobic Surfaces with Enhanced Mechanical Durability (DOI: 10.1021/acsami.8b00521) (DX)