• Macroscopic diagnostics of microscopic friction phenomena 

      Dahmen, Silvio Renato; Farkas, Zénó; Hinrichsen, Haye; Wolf, Dietrich Emil (2005) [Artigo de periódico]
      We show that the static friction force which must be overcome to render a sticking contact sliding is reduced if an external torque is also exerted. As a test system we study a planar disk lying on a horizontal flat surface. ...