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Tuesday, August 19, 2014

ScienceDaily: Engineering and Construction News

ScienceDaily: Engineering and Construction News


How nanoscale lubricating systems can ease friction between surfaces

Posted: 13 Aug 2014 09:37 PM PDT

Diamond-like-carbon (DLC) coatings are an innovative technology, exhibiting the twin properties of mechanical toughness and ultralow friction. These features, which are desirable in abrasive environments, have led to the widespread adoption of DLC films in microelectromechanical systems, such as hard disk drives. But because these coatings contain amorphous carbon atoms that produce rough, nanoscale textures, it is difficult to optimize their friction properties using classical theories designed for macroscopic objects.

Transparent polymeric films with near-uniform, continuous nanoprotrusions show high water pinning abilities

Posted: 13 Aug 2014 09:37 PM PDT

Researchers have used nanoimprinting methods to make patterned polymeric films with surface topography inspired by that of a rose petal, producing a range of transparent films with high water pinning forces.

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