Blog
About

22
views
0
recommends
+1 Recommend
0 collections
    4
    shares
      • Record: found
      • Abstract: not found
      • Article: not found

      Atomic and subnanometer resolution in ambient conditions by atomic force microscopy

       

      Surface Science Reports

      Elsevier BV

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Related collections

          Most cited references 203

          • Record: found
          • Abstract: not found
          • Article: not found

          Atomic Force Microscope

            Bookmark
            • Record: found
            • Abstract: found
            • Article: found
            Is Open Access

            The structure of suspended graphene sheets

            The recent discovery of graphene has sparked significant interest, which has so far been focused on the peculiar electronic structure of this material, in which charge carriers mimic massless relativistic particle. However, the structure of graphene - a single layer of carbon atoms densely packed in a honeycomb crystal lattice - is also puzzling. On the one hand, graphene appears to be a strictly two-dimensional (2D) material and exhibits such a high crystal quality that electrons can travel submicron distances without scattering. On the other hand, perfect 2D crystals cannot exist in the free state, according to both theory and experiment. This is often reconciled by the fact that all graphene structures studied so far were an integral part of larger 3D structures, either supported by a bulk substrate or embedded in a 3D matrix. Here we report individual graphene sheets freely suspended on a microfabricated scaffold in vacuum or air. These membranes are only one atom thick and still display a long-range crystalline order. However, our studies by transmission electron microscopy (TEM) have revealed that suspended graphene sheets are not perfectly flat but exhibit intrinsic microscopic roughening such that the surface normal varies by several degrees and out-of-plane deformations reach 1 nm. The atomically-thin single-crystal membranes offer an ample scope for fundamental research and new technologies whereas the observed corrugations in the third dimension may shed light on subtle reasons behind the stability of 2D crystals.
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Force measurements with the atomic force microscope: Technique, interpretation and applications

                Bookmark

                Author and article information

                Journal
                Surface Science Reports
                Surface Science Reports
                Elsevier BV
                01675729
                March 2009
                March 2009
                : 64
                : 3
                : 99-121
                Article
                10.1016/j.surfrep.2008.12.001
                © 2009

                http://www.elsevier.com/tdm/userlicense/1.0/

                Comments

                Comment on this article