In case you were hiding under a rock or layers of rocks , you've definitely come across one of these crazy YouTube challenges that dominated the Internet this year. To sum it all up: Vloggers basically got bored of their regular makeup tutorials and took things to an insane new level by trying on layers of, well, pretty much anything. Nail polish, foundation, lipstick, self-tanner — the list goes on. And yes, each challenge is as bizarre as it sounds. Here, the 13 best layers challenges of for you to cringe over.
15 Of The Creepiest Layers Videos, Ranked By Insanity | Revelist
Hard disk media is basically composed of a layered magnetic alloy stack for information storage, a protective layer that guards against impact and corrosion of the magnetic media, and a top lubricant layer that reduces friction and wear. This layer is then partially cured to stabilize the amount of bonded and unbonded material on the disk surface via thermal or UV curing. As new types of HDDs are commercialized, the chemistry and deposition technology for the lubricating layer is undergoing rapid evolution. HDD industry leaders are working closely with Intevac in the development of new lubrication chemistries, to ensure their timely and cost-effective production. It is critical that the process temperature be carefully controlled, and the process conducted in a contamination-free environment with minimal solvent loss.
Lubrication Regimes Explained
Boundary lubrication is associated with metal-to-metal contact between two sliding surfaces of the machine. During initial start-up or shutdown of some equipment e. If the oil film is not thick enough to overcome the surface roughness of the metal, a lambda value of less than one results.
The United States Government has certain rights in the invention. It also relates to an improved disk with an improved lubricant film across its surface s. Such magnetic, optical or magneto-optical disks may also be referred to as media. An example of such media is the magnetic disks which are used in hard disk drives. In typical applications a thin polished or textured aluminum disk is used as the substrate.