They found that a single layer of carbon reduced the friction of the silicon carbide surface by a factor of two, and that the graphene bilayer reduced the friction by another fraction of two. The strange thing is that both single and bilayer graphene had less friction than graphite. On the face of it, one would expect the friction to stay somewhere between the values of uncoated silicon carbide and the graphite value as graphene layers were added, without passing through a minimum or maximum along the way.
Updated 10:00 pm, Friday, January 14, 2005. KETCHUM, Idaho -- Ernest Hemingway's house near Sun Valley isn't exactly as he left it on the morning 44 years ago when he committed suicide. But enough reminders remain from when the Pulitzer Prize-winning author called Idaho home.
Ernest Hemingway in Cuba. Hemingway became a fixture of Havana, and stayed in the country longer than many Americans chose to after relations between Cuba and the United States began to deteriorate. He fished extensively aboard his boat, Pilar, and enjoyed the island lifestyle, hanging out in Havana, and entertaining guests at the Finca.