We have studied core-shell nanowires with widely different core and shell lattice constants, namely GaAs core with GaP shell nanowires. We use Raman scattering to probe strain in these nanowires and relate this strain to the observed photoluminescence. The Raman and photoluminescence measurements are in agreement with 8 band k.p calculations for these structures. These results suggest that the electronic properties of core-shall nanowires can be tuned over a wide range by using the strain generated by growing core/shell materials with different lattice constants and different core/shell thicknesses.

Oxidation of graphite may be carried out by reaction with meta-chloroperoxybenzoic acid to yield graphite epoxide. Scanning tunneling microscopy (STM) showed that the functionalization occurs at the edges rather than on the basal plane of the graphite. Quantification of the epoxide content is possible through the deepoxidation reaction using MeReO3/PPh3.

A facile route to water-soluble graphite nanoplatelets that uses graphite as the starting material is described. The method relies on the addition of phenyl radicals with subsequent sulfonation of the phenyl groups. Atomic force microscopy, high-resolution transmission electron microscopy, and scanning tunneling microscopy images show that a high degree of exfoliation occurs during the sulfonation step. The sheet resistance of the bulk films of the nanoplatelets prepared by vacuum filtration using an anodisc membrane was found to be 212 Ω/sq.

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The synthesis and imaging by scanning tunneling microscopy of a mixed wheeled nanovehicle composed of a p-carborane small-wheeled short front axle and a C(60) large-wheeled long rear axle that has been termed a nanodragster due to the structural relation to a dragster are reported. This nanodragster is expected to exhibit motion at a lower temperature than pure C(60)-wheeled nanocars and should allow the investigation of the role played by p-carborane wheels in directional motion.