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In this work, we study the cyclic telescoping of multi-walled carbon nanotubes (MWCNTs) inside a high-resolution transmission electron microscope. The nanotubes are observed in real time, while simultaneously measuring their electrical properties. Experiments are conducted by first ‘sharpening’ a MWCNT by approaching it with a piezo-controlled tungsten tip and applying a single voltage pulse. This...
Progress in the field of femtogram (10 −15 g) mass delivery relies on finding dependable transport vehicles and uncomplicated methods to tailor the deposition of active substances. Here, current-conductive containers consisting of turbostratic carbon nanotubes were used to store a light-emitting ternary alloy and guide its delivery on demand. We found that the electrically-activated delivery...
Carbon nanoscrolls, made of rolled up graphene, are expected to show unique electronic properties different from those of nested multi-wall tubes. Here we report in situ TEM observations and electrical measurements of the transport and breakdown behaviour of catalytically grown, multi-turn monochiral graphene scrolls, 30–65nm in outer diameter. Generally, the low-bias IV region proved strictly linear...
A high density of electrical current has been used to induce the abrupt release of a sulfide compound from the interior of electron-beam-welded turbostratic carbon nanotubes. This event did not alter the chemical identity of either the expelled or the encapsulated material. However, upon 30days of air exposure notable differences in reactivity were observed. It was found that the expelled chalcogenide...
The electrical and mechanical properties of the same hybrid carbon nanotube before and after removal of the core Ga-doped ZnS semiconductor filling have been analysed inside a transmission electron microscope (TEM) using a conductive atomic force microscope – TEM system. It is found that the encapsulated material can substantially change the mechanical response of the turbostratic carbon tube container...
A systematic study on the effects of reaction and annealing temperatures on the structure and N doping of carbon nanotubes is presented. CN x nanotubes prepared by aerosol-assisted chemical vapour deposition of dimethylformamide exhibit a bamboo-like structure made of numerous tubular compartments for all reaction and annealing temperatures studied. Post-synthesis nanotube annealing in a vacuum...
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