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A tunable concentration of localized magnetic impurities is inserted into a metal from a molecular monolayer, which allows many-body phenomena in magnetic impurity–host systems to be studied at unprecedented impurity concentrations.
A single point defect in graphene can act as an atomic antenna in the petahertz frequency range, leading to surface plasmon resonances at the subnanometre scale.
Hot carriers dominate energy transport across graphene p–n junctions that are excited by ultrafast laser pulses, and set fundamental limits on device speeds.
The electrophoretic mobilities of ions in membranes made of subnanometre carbon nanotubes are approximately three times higher than the bulk values, and the induced electro-osmotic velocities are four orders of magnitude faster than those measured in conventional porous materials.
Photoluminescence microscopy can be used to image exciton quenching in semiconducting single-walled carbon nanotubes during the early stages of chemical doping.
Arrays of vertical silicon nanowires can record and stimulate neuronal activity from within mammalian nerve cells, and can also map multiple individual synaptic connections between these cells.