Narrow graphene nanoribbons from carbon nanotubes

  title={Narrow graphene nanoribbons from carbon nanotubes},
  author={Liying Jiao and Li Zhang and Xinran Wang and Georgi Diankov and H. Dai},
Graphene nanoribbons (GNRs) are materials with properties distinct from those of other carbon allotropes. The all-semiconducting nature of sub-10-nm GNRs could bypass the problem of the extreme chirality dependence of the metal or semiconductor nature of carbon nanotubes (CNTs) in future electronics. Currently, making GNRs using lithographic, chemical or sonochemical methods is challenging. It is difficult to obtain GNRs with smooth edges and controllable widths at high yields. Here we show an… 

Aligned graphene nanoribbons and crossbars from unzipped carbon nanotubes

Aligned graphene nanoribbon (GNR) arrays have been made by unzipping of aligned single-walled and few-walled carbon nanotube (CNT) arrays. Nanotube unzipping was achieved by a polymer-protected Ar

Fabrication and optical probing of highly extended, ultrathin graphene nanoribbons in carbon nanotubes.

The optical properties of the GNRs formed in single-wall carbon nanotubes formed in graphene nanoribbons in qualitative agreement with the first-principles calculations are reported.

Oriented graphene nanoribbons embedded in hexagonal boron nitride trenches

The successful growth of GNRs directly on hexagonal boron nitride substrates with smooth edges and controllable widths using chemical vapour deposition is reported.

Intact Crystalline Semiconducting Graphene Nanoribbons from Unzipping Nitrogen-Doped Carbon Nanotubes.

Unzipping carbon nanotubes (CNTs) may offer a valuable route to graphene nanoribbon (GNR) structures with semiconducting properties. Unfortunately, currently available unzipping methods commonly rely

Fabrication and Characterization of Fully Flattened Carbon Nanotubes: A New Graphene Nanoribbon Analogue

A high-yield fabrication of a high quality another type of GNR analogue, fully flattened carbon nanotubes (flattened CNTs), using solution-phase extraction of inner tubes from large-diameter multi-wall CNTS (MWCNTs).

A carbon nanotube–graphene nanoribbon seamless junction transistor

The nature and type of intramolecular junctions are very important for nanoelectronics. Here, a new way of fabricating seamless junctions between carbon nanotubes and graphene nanoribbons (GNRs) is

Self-assembly of a sulphur-terminated graphene nanoribbon within a single-walled carbon nanotube.

It is demonstrated that a GNR can self-assemble from a random mixture of molecular precursors within a single-walled carbon nanotube, which ensures propagation of the nanoribbon in one dimension and determines its width.

2D self-assembly and electronic characterization of oxygen-boron-oxygen-doped chiral graphene nanoribbons.

The large-scale, inexpensive growth of high-quality oxygen-boron-oxygen-doped chiral GNRs with a defined structure using chemical vapor deposition is reported, which results in a unique orthogonal network of GNRs.

Preparation of graphene nanoribbons (GNRs) from twisted structure carbon nanotubes using unzipping technique

  • Mayyadah S Abed
  • Materials Science
    IOP Conference Series: Materials Science and Engineering
  • 2018
This work deals with the preparation of graphene nano ribbons (GNRs), which are small bars or strips of graphene with narrow range width less than 50 nm and one atom thick sheet (approximately 140



Chemically Derived, Ultrasmooth Graphene Nanoribbon Semiconductors

We developed a chemical route to produce graphene nanoribbons (GNR) with width below 10 nanometers, as well as single ribbons with varying widths along their lengths or containing lattice-defined

Tailoring the atomic structure of graphene nanoribbons by scanning tunnelling microscope lithography.

The patterning of graphene nanoribbons and bent junctions are patterned with nanometre-precision, well-defined widths and predetermined crystallographic orientations, allowing us to fully engineer their electronic structure using scanning tunnelling microscope lithography.

Energy gaps in graphene nanoribbons.

The authors' ab initio calculations show that the origin of energy gaps for GNRs with armchair shaped edges arises from both quantum confinement and the crucial effect of the edges, which differs from the results of simple tight-binding calculations or solutions of the Dirac's equation based on them.

Charge transport in disordered graphene-based low dimensional materials

Two-dimensional graphene, carbon nanotubes, and graphene nanoribbons represent a novel class of low dimensional materials that could serve as building blocks for future carbon-based nanoelectronics.

Electronic structure and stability of semiconducting graphene nanoribbons.

According to the extrapolated inverse power law obtained in this work, armchair carbon nanoribbons of widths larger than 8 nm will present a maximum band gap of 0.3 eV, while for ribbons with a width of 80 nm the maximum possible band gap is 0.05 eV.

Room-temperature all-semiconducting sub-10-nm graphene nanoribbon field-effect transistors.

The sub-10 nm GNRFETs are comparable to small diameter carbon nanotube FETs with Pd contacts in on-state current density and Ion/Ioff ratio, but have the advantage of producing all-semiconducting devices.

Controlled nanocutting of graphene

Rapid progress in graphene-based applications is calling for new processing techniques for creating graphene components with different shapes, sizes, and edge structures. Here we report a controlled

Bulk production of a new form of sp(2) carbon: crystalline graphene nanoribbons.

With this material available to researchers, it should be possible to develop new applications and physicochemical phenomena associated with layered graphene.