IndustryWeek: “Nanotechnology: Beyond the Hype”

IndustryWeek has selected an image related to our very recent work on vacancy clusters in graphane as quantum dots as a front cover for its November 2010 issue.

In a recent article in ACS Nano, we discuss how complementary electronic properties and a tendency to form sharp graphenegraphane interfaces can open tantalizing possibilities for two-dimensional nanoelectronics. First-principles density functional and tight-binding calculations show that graphane can serve as natural host for graphene quantum dots, clusters of vacancies in the hydrogen sublattice. Their size n, shape, and stability are governed by the aromaticity and interfaces, resulting in formation energies ~1/√n eV/atom and preference to hexagonal clusters congruent with lattice hexagons. Clusters exhibit large gaps ~15/√n eV with size dependence typical for confined Dirac fermions.

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