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Related: About this forumSimulations lead to design of near-frictionless material
http://www.alcf.anl.gov/articles/simulations-lead-design-near-frictionless-material[font face=Serif][font size=5]Simulations lead to design of near-frictionless material[/font]
Author: Jim Collins
July 21, 2015
[font size=3]Argonne scientists used Mira to identify and improve a new mechanism for eliminating friction, which fed into the development of a hybrid material that exhibited superlubricity at the macroscale for the first time. ALCF researchers helped enable the groundbreaking simulations by overcoming a performance bottleneck that doubled the speed of the teams code.
...
They were amazed by what the computer simulations revealed. When the lubricant materialsgraphene and diamond-like carbon (DLC)slid against each other, the graphene began rolling up to form hollow cylindrical scrolls that helped to practically eliminate friction. These so-called nanoscrolls represented a completely new mechanism for superlubricity, a state in which friction essentially disappears.
The nanoscrolls combat friction in very much the same way that ball bearings do by creating separation between surfaces, said Deshmukh, who finished his postdoctoral appointment at Argonne in January.
Superlubricity is a highly desirable property. Considering that nearly one-third of every fuel tank is spent overcoming friction in automobiles, a material that can achieve superlubricity would greatly benefit industry and consumers alike. Such materials could also help increase the lifetime of countless mechanical components that wear down due to incessant friction.
...[/font][/font]
http://www.sciencemag.org/content/348/6239/1118.fullAuthor: Jim Collins
July 21, 2015
[font size=3]Argonne scientists used Mira to identify and improve a new mechanism for eliminating friction, which fed into the development of a hybrid material that exhibited superlubricity at the macroscale for the first time. ALCF researchers helped enable the groundbreaking simulations by overcoming a performance bottleneck that doubled the speed of the teams code.
...
They were amazed by what the computer simulations revealed. When the lubricant materialsgraphene and diamond-like carbon (DLC)slid against each other, the graphene began rolling up to form hollow cylindrical scrolls that helped to practically eliminate friction. These so-called nanoscrolls represented a completely new mechanism for superlubricity, a state in which friction essentially disappears.
The nanoscrolls combat friction in very much the same way that ball bearings do by creating separation between surfaces, said Deshmukh, who finished his postdoctoral appointment at Argonne in January.
Superlubricity is a highly desirable property. Considering that nearly one-third of every fuel tank is spent overcoming friction in automobiles, a material that can achieve superlubricity would greatly benefit industry and consumers alike. Such materials could also help increase the lifetime of countless mechanical components that wear down due to incessant friction.
...[/font][/font]
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Simulations lead to design of near-frictionless material (Original Post)
OKIsItJustMe
Jul 2015
OP
Duppers
(28,130 posts)1. Link?
Please. On phone or I'd look it up.
OKIsItJustMe
(19,938 posts)2. Check the top of the OP
Paper is here: http://www.sciencemag.org/content/348/6239/1118.full
Duppers
(28,130 posts)3. Your top link
Takes me to "post a new discussion thread".... So, thanks for linking the article.
OKIsItJustMe
(19,938 posts)4. Fixed
Sorry about that
Duppers
(28,130 posts)5. Thanks.
I know a couple of solid state/materials people who would be intetested, if they haven't yet seen the paper.
The2ndWheel
(7,947 posts)6. Humans don't like limits
And it's all ball bearings nowadays.
phantom power
(25,966 posts)7. Hah. Nano-bearings.
hunter
(38,340 posts)8. I'm imagining this material would be very useful in a miniature mechaincal computer...
... a modern version of Babbage's Analytical Engine the size of a lunchbox, built by watchmakers.
OKIsItJustMe
(19,938 posts)9. I'm thinking it would be useful in wind turbines
(among other things...)
...
The research team is in the process of seeking a patent for the hybrid material, which could potentially be used for applications in dry environments, such as computer hard drives, wind turbine gears, and mechanical rotating seals for microelectromechanical and nanoelectromechanical systems. Adding to the materials appeal is a relatively simple and cost-effective deposition method called drop casting. This technique involves spraying solutions of the materials on moving mechanical parts. When the solutions evaporate, it would leave the graphene and nanodiamonds on one side of a moving part, and diamond-like carbon on the other side.
...
The research team is in the process of seeking a patent for the hybrid material, which could potentially be used for applications in dry environments, such as computer hard drives, wind turbine gears, and mechanical rotating seals for microelectromechanical and nanoelectromechanical systems. Adding to the materials appeal is a relatively simple and cost-effective deposition method called drop casting. This technique involves spraying solutions of the materials on moving mechanical parts. When the solutions evaporate, it would leave the graphene and nanodiamonds on one side of a moving part, and diamond-like carbon on the other side.
...