Contents: (Small 14/2013)

TransistorsThe fl icker noise in a 'fullerene + graphene' hybrid transistor is measured by X. H. Qiu and co-workers on page 2420 to reveal the electrical coupling between its graphene channel and C 60 adsorbates.The charge associated with the trapping and detrapping processes at the C 60 /graphene interface induces current fl uctuations in the device.The temperature-dependent noise characteristics indicate that the two contributions are related to Coulomb scattering and charge-exchange kinetics.This represents a practical template for developing graphene-based biosensors and nanoelectrodes. Quantum DotsC. Chen, Y. Gao, Y. Liu, and co-workers compare the infl uence of the chemical composition and surface modifi cation of seven cadmium-based quantum dots (QDs) on living cells.These parameters determine the amount of Cd 2+ released within the cell, and on page 2440 they fi nd that CdTe@ZnS shelled QDs show much lower cytotoxicity than naked ones with similar surface modifi cations.Moreover, positively charged QDs are more toxic than negatively charged ones.Both positively and negatively charged QDs without ZnS coatings lead to multipolar spindles, misaligned chromosomes, and G2/M checkpoint failures.