Schematics and Energetics of Bucky Shuttle Memory on Graphene Nanoribbon Array

Abstract

Conjugated carbon nanomaterials such as fullerene-nanotube, fullerene-graphene, and nanotube-graphene hybrids have great potential for various applications. This paper presents the schematics and energetics of a nonvolatile nanomemory element based on a fullerene-nanotube-graphene hybrid. The system proposed was composed of C60 fullerene and a nanotube placed on two graphene-nanoribbons with a gap. The C60 fullerene encapsulated in the nanotube can shuttle between two graphene-nanoribbons along the nanotube under the alternatively applied force fields. When the encapsulated C60 fullerene settles on the graphene-nanoribbons, the local energy minima are achieved from the attractive van der Waals potential energies. Since the C60 fullerene retains its position on the graphene-nanoribbon without external force fields, the proposed system can then operate a nonvolatile memory device.

Atomic-scale defects restricting structural superlubricity: Ab initio study on the example of the twisted graphene bilayer

“…Relative rotation of graphene layers also gives rise to promising tribological properties [5][6][7][8][9], namely, structural superlubricity, i.e., the mode of relative motion of the layers with vanishing or nearly vanishing friction [10,11]. This superlubric behavior can be used for elaboration of nanoelectromechanical systems based on electronic properties of graphene and relative sliding or rotation of graphene layers with respect to each other [12][13][14][15][16]. Rotation of graphene layers to incommensurate superlubric orientations is responsible for such phenomena as self-retraction of graphene layers [8,9,17,18] and anomalous fast diffusion of a graphene flake on a graphite surface [19,20].…”

Atomic-scale defects restricting structural superlubricity: Ab initio study study on the example of the twisted graphene bilayer

“…10,11 This superlubric behavior can be used for elaboration of nanoelectromechanical systems based on electronic properties of graphene and relative sliding or rotation of graphene layers with respect to each other. [12][13][14][15][16] Rotation of graphene layers to incommensurate superlubric orientations is responsible for such phenomena as self-retraction of graphene layers 8,9,17,18 and anomalous fast diffusion of a graphene flake on a graphite surface. 19,20 It should be mentioned that the phenomenon of structural superlubricity is observed not only for graphenebased systems [5][6][7][8][9] but also for multiwalled carbon nanotubes, 21 graphene nanoribbons on gold surfaces, 22 graphene/hexagonal boron nitride heterostructure, 23 etc.…”

Universal description of potential energy surface of interlayer interaction in two-dimensional materials by first spatial Fourier harmonics

“…The interaction between graphene layers is responsible for the tunable band gap [2] and such phenomena as superconductivity in twisted graphene bilayers [3], commensurateincommensurate phase transition [4] manifested through formation of a network of domain walls [5] with topologically protected helical states [6,7] in bilayer graphene, selfretraction of graphene layers [8,9] and so on. Graphene applications based on interlayer interaction such as nanoelectromechanical systems (NEMS) composed of graphene layers which slide with respect to each other have been proposed [10][11][12]. In addition to graphene, a wide family of other 2D materials has been recently synthesized including hexagonal boron nitride (h-BN, see Ref.…”