Hongjie Dai

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 containi...

Highly conducting graphene sheets and Langmuir–Blodgett films

Carbon Nanotubes:  Synthesis, Integration, and Properties

Synthesis of carbon nanotubes by chemical vapor deposition over patterned catalyst arrays leads to nanotubes grown from specific sites on surfaces. The growth directions of the ...

Crystalline Ropes of Metallic Carbon Nanotubes

Fullerene single-wall nanotubes (SWNTs) were produced in yields of more than 70 percent by condensation of a laser-vaporized carbon-nickel-cobalt mixture at 1200°C. X-ray diffra...

Self-Oriented Regular Arrays of Carbon Nanotubes and Their Field Emission Properties

The synthesis of massive arrays of monodispersed carbon nanotubes that are self-oriented on patterned porous silicon and plain silicon substrates is reported. The approach invol...

Large-scale purification of single-wall carbon nanotubes: process, product, and characterization

Narrow graphene nanoribbons from carbon nanotubes

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 proble...